ANGULAR CONTACT BALL BEARINGS
SINGLE-ROW AND MATCHED
ANGULAR CONTACT BALL BEARINGS
Bore Diameter 10 – 65mm ············· B50
Bore Diameter 70 – 120mm ············· B60
Bore Diameter 130 – 200mm ············· B66
DOUBLE-ROW ANGULAR CONTACT Bore Diameter
BALL BEARINGS
FOUR-POINT CONTACT BALL BEARINGS
10 – 85mm ············· B70
Bore Diameter 30 – 200mm ············· B72
DESIGN, TYPES, AND FEATURES
Contact
angle
α
SINGLE-ROW ANGULAR CONTACT BALL BEARINGS
Since these bearings have a contact angle, they can sustain significant axial
loads in one direction together with radial loads. Because of their design, when
a radial load is applied, an axial force component is produced; therefore, two
opposed bearings or a combination of more than two must be used.
Since the rigidity of single-row angular contact ball bearings can be
increased by preloading, they are often used in the main spindles of machine
tools, for which high running accuracy is required. (Refer to Chapter 10,
Preload, Page A96).
Usually, the cages for angular contact ball bearings with a contact angle
of 30° (Symbol A) or 40°(Symbol B) are in accordance with Table 1,but
depending on the application, machined synthetic resin cages or molded
polyamide resin cages are also used. The basic load ratings given in the
bearing tables are based on the cage classification listed in Table 1.
Though the figures in the bearing tables (Pages B50 to B65; bearing bore
diameters of 10 to 120) show bearings with single-shoulder-type inner rings,
both-shoulder-type bearings are also available. Please consult NSK for more
detailed information.
Table 1 Standard Cages for Angular Contact Ball Bearings
Series
Pressed Steel Cages
Machined Brass Cages
79A5, C
—
7900 – 7940
70A
7000 – 7018
7019 – 7040
70C
—
7000 – 7022
72A, B
7200 – 7222
7224 – 7240
72C
—
7200 – 7240
73A, B
7300 – 7320
7321 – 7340
In addition, for bearings with the same serial number, if the type of cages
are different, the number of balls may also be different. In such a case, the
load rating will differ from the one listed in the bearing tables.
Angular Contact Ball Bearings with contact angles of 15° (Symbol C) and
25° (Symbol A5) are primarily for high precision or high speed applications,
and machined brass or synthetic resin cages or molded polyamide cages are
used.
The maximum operating temperature of molded polyamide cages is 120°C.
B 46
B046-075E.indd 46-47
B 47
11/5/12 5:29:10 PM
MATCHED ANGULAR CONTACT BALL BEARINGS
The types and features of matched angular contact ball bearings are shown
in Table 2.
Table 2 Types and Features of Matched Angular Contact Ball Bearings
Figure
Arrangement
Features
Back-to-back
Radial loads and axial loads in both directions
can be sustained.
Since the distance between the effective
load centers a0 is big, this type is suitable if
moments are applied.
(DB)
(Example)
a0
7208 A DB
Face-to-face
(DF)
(Example)
a0
7208 B DF
Tandem
(DT)
(Example)
7208 A DT
Radial loads and axial loads in both directions
can be sustained.
Compared with the DB Type, the distance
between the effective load centers is small, so
the capacity to sustain moments is inferior to
the DB Type.
Radial loads and axial loads in one direction
can be sustained. Since two bearings share the
axial load, this arrangement is used when the
load in one direction is heavy.
NSKHPS ANGULAR CONTACT BALL BEARINGS
In comparison with standard angular contact ball bearings, these bearings
have high capacity, high limiting speed, and highly accurate universal
matching as the features. The molded polyamide cages are standard
specification for the HPS type.
DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS
This is basically a back-to-back mounting of two single-row angular contact
ball bearings, but their inner and outer rings are each integrated into one.
Axial loads in both directions can be sustained, and the capacity to sustain
moments is good. This type is used as fixed-end bearings.
Their cages are pressed steel.
FOUR-POINT CONTACT BALL BEARINGS
The inner ring is split radially into two pieces. Their design allows one
bearing to sustain significant axial loads in either direction.
The contact angle is 35°, so the axial load capacity is high. This type is
suitable for carrying pure axial loads or combined loads where the axial loads
are high.
The cages are made of machined brass.
PRECAUTIONS FOR USE OF ANGULAR CONTACT BALL
BEARINGS
Under severe operating conditions where the speed and temperature are
close to their limits, lubrication is marginal, vibration and moment loads are
heavy, they may not be suitable, particularly for certain types of cages. In
such a case, please consult with NSK beforehand.
And if the load on angular contact ball bearings becomes too small, or if the
ratio of the axial and radial loads for matched bearings exceeds ‘e’ (e is listed
in the bearings tables) during operation, slippage occurs between the balls
and raceways, which may result in smearing. Especially with large bearings
since the weight of the balls and cage is high. If such load conditions are
expected, please consult with NSK for selection of the bearings.
B 48
B046-075E.indd 48-49
TOLERANCES AND RUNNING ACCURACY
SINGLE-ROW ANGULAR CONTACT
BALL BEARINGS ····························································Table 8.2 (Pages A60 to A63)
NSKHPS ANGULAR CONTACT BALL BEARINGS
Tolerance for Dimensions: Class 6,
Running Accuracy: Class 5 ·········································Table 8.2 (Pages A60 to A63)
MATCHED ANGULAR CONTACT
BALL BEARINGS ····························································Table 8.2 (Pages A60 to A63)
DOUBLE-ROW ANGULAR CONTACT
BALL BEARINGS ····························································Table 8.2 (Pages A60 to A63)
FOUR-POINT CONTACT BALL
BEARINGS ······································································Table 8.2 (Pages A60 to A63)
RECOMMENDED FITS
SINGLE-ROW ANGULAR CONTACT BALL
BEARINGS AND HPS ANGULAR CONTACT
BALL BEARINGS ····························································Table 9.2 (Page A84)
Table 9.4 (Page A85)
MATCHED ANGULAR CONTACT BALL BEARINGS ········Table 9.2 (Page A84)
Table 9.4 (Page A85)
DOUBLE-ROW ANGULAR CONTACT BALL
BEARINGS ······································································Table 9.2 (Page A84)
Table 9.4 (Page A85)
FOUR-POINT CONTACT BALL BEARINGS·····················Table 9.2 (Page A84)
Table 9.4 (Page A85)
INTERNAL CLEARANCES
MATCHED ANGULAR CONTACT BALL BEARINGS ······ Table 9. 17 (Page A94)
Matched angular contact ball bearings with precision better than P5 are primarily
used in the main spindles of machine tools, so they are used with a preload for
rigidity. For convenience of selection, internal clearances are adjusted to produce Very
Light, Light, Medium, and Heavy Preloads. Their fitting is also special. Concerning
these matters, please refer to Tables 10.1 and 10.2 (Pages A98 and A99).
The clearance (or preload) of matched bearings is obtained by axially tightening
a pair of bearings till the side faces of their inner or outer rings are pressed against
each other.
NSKHPS ANGULAR CONTACT BALL BEARINGS
Axial Internal Clearance (Measured Clearances)
Nominal Bore Diameter
d (mm)
over
incl.
12
18
18
30
30
50
50
80
Units : μm
Axial Internal Clearance
CNB
GA
min.
max.
min.
max.
17
25
20
28
–2
6
24
32
29
41
–3
9
DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS
For the clearance in double-row angular contact ball bearings, please consult with
NSK.
FOUR-POINT CONTACT BALL BEARINGS·····················Table 9.18 (Page A94)
LIMITING SPEEDS
In cases of single-row and matched angular contact ball bearings, the Limiting
speeds listed in the bearing table are for bearings with machined cage. For those with
pressed cages, the listed speeds must be reduced by 20%.
The limiting speeds of bearings with contact angles of 15° (Symbol C) and
25° (Symbol A5) are for bearings with precision of P5 and better (with machined
synthetic-resin cages or molded polyamide cages).
The limiting speeds listed in the bearing tables should be adjusted depending on the
bearing load conditions. Also, higher speeds are attainable by making changes in the
lubrication method, cage design, etc. Refer to Page A37 for detailed information.
B 49
11/5/12 5:29:11 PM
ANGULAR CONTACT BALL BEARINGS
Dynamic Equivalent Load P = X Fr +Y Fa
SINGLE/MATCHED MOUNTINGS
Bore Diameter 10 – 15 mm
B
2B
r
Contact i f0 Fa*
Angle Cor
2B
2B
r1
jD
jd
jDa
a0
jd a
jd b
jd a jDa
jD b
15º
25º
30º
40º
—
—
—
rb
ra
ra
r
0.178
0.357
0.714
1.07
1.43
2.14
3.57
5.35
ra
rb
ra
r1
a0
e
0.38
0.40
0.43
0.46
0.47
0.50
0.55
0.56
0.68
0.80
1.14
Single, DT
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
0
0.44 1.47
1
0
0.44 1.40
1
0
0.44 1.30
1
0
0.44 1.23
1
0
0.44 1.19
1
0
0.44 1.12
1
0
0.44 1.02
1
0
0.44 1.00
1
0
0.41 0.87
1
0
0.39 0.76
1
0
0.35 0.57
DB or DF
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
1.65 0.72 2.39
1
1.57 0.72 2.28
1
1.46 0.72 2.11
1
1.38 0.72 2.00
1
1.34 0.72 1.93
1
1.26 0.72 1.82
1
1.14 0.72 1.66
1
1.12 0.72 1.63
1
0.92 0.67 1.41
1
0.78 0.63 1.24
1
0.55 0.57 0.93
* For i , use 2 for DB, DF and 1 for DT
Static Equivalent Load
Contact
Angle
15º
25º
30º
40º
a
Single
Back-to-Back
DB
Boundary Dimensions
Basic Load Ratings (Single)
(mm)
d
D
B
Face-to-Face
DF
(N)
r
r1
Cr
Factor
{kgf}
C 0r
Cr
C 0r
f0
Tandem
DT
Limiting
Speeds (1)
(min –1)
Grease
Oil
Eff.Load Abutment and Fillet Mass
Centers Dimensions (mm)
(kg)
(mm)
10
15
Da
max.
ra
Single
Duplex
Cr
{kgf}
C 0r
Cr
DB or DF
Y0
0.46
0.38
0.33
0.26
X0
1
1
1
1
Y0
0.92
0.76
0.66
0.52
Limiting
Load Center
Speeds (1) (Matched) Spacings (mm)
Basic Load Ratings (Matched)
(N)
X0
0.5
0.5
0.5
0.5
C 0r
(min –1)
Grease
Oil
DB
a0
DF
max. approx.
Single or DT
mounting
When
F r >0.5F r +Y 0 F a
use P0=Fr
Abutment and Fillet
Dimensions (mm)
db (3)
Db
rb (3)
min.
max.
max.
22
22
26
6 0.3 0.15
6 0.3 0.15
8 0.3 0.15
2 880
3 000
5 350
1 450
1 520
2 600
294
305
550
148 — 40 000 56 000
155 14.1 48 000 63 000
266 — 32 000 43 000
6.7
5.1
9.2
12.5
12.5
12.5
19.5
19.5
23.5
0.3 0.009
0.3 0.009
0.3 0.019
7900 A5 DB DF DT
7900 C DB DF DT
7000 A DB DF DT
4 700
4 900
8 750
2 900
3 050
5 200
475
500
890
296 32 000 43 000
310 38 000 53 000
530 24 000 34 000
13.5
10.3
18.4
1.5
1.7
2.4
—
—
11.2
20.8
20.8
24.8
0.15
0.15
0.15
26
30
30
8 0.3 0.15
9 0.6 0.3
9 0.6 0.3
5 300
5 400
5 000
2 490
2 710
2 500
540
555
510
254 12.6 45 000 63 000
276 — 28 000 38 000
255 — 20 000 28 000
6.4
10.3
12.9
12.5
15
15
23.5
25
25
0.3 0.021
0.6 0.032
0.6 0.032
7000 C
7200 A
7200 B
DB DF DT
DB DF DT
DB DF DT
8 650
8 800
8 100
5 000
5 400
5 000
880
900
825
510 36 000 50 000
555 22 000 30 000
510 16 000 22 000
12.8
20.5
25.8
3.2
2.5
7.8
—
12.5
12.5
24.8
27.5
27.5
0.15
0.3
0.3
5 400
9 300
8 750
2 610
4 300
4 050
550
950
890
266 13.2 40 000 56 000
440 — 20 000 26 000
410 — 18 000 24 000
7.2
12.0
14.9
15
15
15
25
30
30
0.6 0.036
0.6 0.053
0.6 0.054
7200 C
7300 A
7300 B
DB DF DT
DB DF DT
DB DF DT
8 800
15 100
14 200
5 200
8 600
8 100
895
1 540
1 450
530 32 000 45 000
880 16 000 22 000
825 14 000 20 000
14.4
24.0
29.9
3.6
2.0
7.9
—
12.5
12.5
27.5
32.5
32.5
0.3
0.3
0.3
5 200
5 450
9 400
3 550
3 700
5 950
530
555
955
360 30 000 43 000
380 36 000 50 000
610 22 000 30 000
14.4
10.8
19.5
2.4
1.2
3.5
—
—
13.2
22.8
22.8
26.8
0.15
0.15
0.15
DB DF DT
DB DF DT
DB DF DT
9 400
13 000
12 100
5 800
8 050
7 500
960
1 330
1 230
590 32 000 45 000
820 20 000 28 000
765 15 000 20 000
13.4
22.7
28.5
2.6
2.7
8.5
—
14.5
14.5
26.8
29.5
29.5
0.15
0.3
0.3
29.5
29.5
32
0.3
0.3
0.6
32
32
0.6
0.6
30
35
35
12
da
min.
a
min. min.
Bearing Numbers (2)
P0=X 0Fr +Y 0Fa
Single, DT
9 0.6 0.3
11 0.6 0.3
11 0.6 0.3
24
24
28
6 0.3 0.15
6 0.3 0.15
8 0.3 0.15
3 200
3 350
5 800
1 770
1 860
2 980
325
340
590
181 — 38 000 53 000
189 14.7 45 000 63 000
305 — 28 000 38 000
7.2
5.4
9.8
14.5
14.5
14.5
21.5
21.5
25.5
0.3 0.011
0.3 0.011
0.3 0.021
7901 A5 DB DF DT
7901 C DB DF DT
7001 A DB DF DT
28
32
32
8 0.3 0.15
10 0.6 0.3
10 0.6 0.3
5 800
8 000
7 450
2 900
4 050
3 750
590
815
760
296 13.2 40 000 56 000
410 — 26 000 34 000
380 — 18 000 26 000
6.7
11.4
14.2
14.5
17
17
25.5
27
27
0.3 0.024
0.6 0.037
0.6 0.038
7001 C
7201 A
7201 B
32
32
37
10 0.6 0.3
10 0.6 0.3
12 1 0.6
8 150
7 900
9 450
3 750
3 850
4 500
830
805
965
380 — 20 000 30 000
395 12.5 36 000 50 000
460 — 18 000 24 000
14.2
7.9
13.1
17
17
18
27
27
31
0.6 0.036
0.6 0.041
1
0.060
*7201 BEA
7201 C DB DF DT
7301 A DB DF DT
—
12 800
15 400
—
7 700
9 000
—
1 310
1 570
— 16 000 24 000
785 30 000 40 000
915 15 000 20 000
28.5
15.9
26.1
8.5
4.1
2.1
14.5
—
17
37
37
12 1
12 1
8 850
11 100
4 200
4 950
900
1 130
425
505
16 000 22 000
18 000 26 000
16.3
16.3
18
18
31
31
1
1
0.062
0.061
7301 B DB DF DT
*7301 BEA
14 400
—
8 400
—
1 460
—
855 13 000 18 000
— 15 000 22 000
32.6
32.6
8.6
8.6
17
17
7 400
7 750
9 950
5 050
5 300
6 850
755
790
1 010
515 26 000 34 000
540 30 000 43 000
700 19 000 26 000
17.0
12.8
22.6
3.0
1.2
4.6
—
—
16.2
26.8
26.8
30.8
0.15
0.15
0.15
DB DF DT
DB DF DT
DB DF DT
10 100
14 000
12 900
6 750
9 300
8 600
1 030
1 430
1 310
690 28 000 38 000
950 18 000 24 000
875 13 000 18 000
15.3
25.4
32.0
2.7
3.4
10.0
—
17.5
17.5
30.8
32.5
32.5
0.15
0.3
0.3
32.5
32.5
37
0.3
0.3
0.6
37
37
0.6
0.6
0.6
0.6
—
—
28
28
32
7 0.3 0.15
7 0.3 0.15
9 0.3 0.15
4 550
4 750
6 100
2 530
2 640
3 450
465
485
625
258 — 32 000 43 000
270 14.5 38 000 53 000
350 — 24 000 32 000
8.5
6.4
11.3
17.5
17.5
17.5
25.5
25.5
29.5
0.3 0.015
0.3 0.015
0.3 0.030
7902 A5 DB DF DT
7902 C DB DF DT
7002 A DB DF DT
32
35
35
9 0.3 0.15
11 0.6 0.3
11 0.6 0.3
6 250
8 650
7 950
3 400
4 650
4 300
635
880
810
345 14.1 34 000 48 000
475 — 22 000 30 000
440 — 16 000 22 000
7.6
12.7
16.0
17.5
20
20
29.5
30
30
0.3 0.034
0.6 0.045
0.6 0.046
7002 C
7202 A
7202 B
35
35
42
11 0.6 0.3
11 0.6 0.3
13 1 0.6
9 800
8 650
13 400
4 800
4 550
7 100
995
885
1 370
490 — 18 000 26 000
460 13.2 32 000 45 000
720 — 16 000 22 000
16.0
8.8
14.7
20
20
21
30
30
36
0.6 0.044
0.6 0.052
1
0.084
*7202 BEA
7202 C DB DF DT
7302 A DB DF DT
—
14 100
21 800
—
9 050
14 200
—
1 440
2 220
— 14 000 20 000
925 26 000 36 000
1 440 13 000 17 000
32.0
17.7
29.5
10.0
4.3
3.5
17.5
—
20
42
42
13 1
13 1
12 500
14 300
6 600
6 900
1 270
1 460
670
705
18.5
18.5
21
21
36
36
1
1
7302 B DB DF DT
*7302 BEA
20 200
—
13 200
—
2 060
—
1 340 11 000 15 000
— 13 000 18 000
36.9
36.9
10.9
10.9
20
20
0.6
0.6
—
—
14 000 19 000
16 000 22 000
Notes (1) For applications operating near the limiting speed, refer to Page B49.
(2) The suffixes A, A5, B, and C represent contact angles of 30°, 25°, 40°, and 15° respectively.
B 50
B046-075E.indd 50-51
0.086
0.084
Note (3) For bearings marked — in the column for db, db and rb for shafts are da (min) and ra (max) respectively.
Remarks The bearings denoted by an asterisk (*) are NSKHPS Angular contact ball bearings and the column of Duplex in Bearing
Numbers indicates the universal matching.
B 51
11/5/12 5:29:12 PM
ANGULAR CONTACT BALL BEARINGS
Dynamic Equivalent Load P = X Fr +Y Fa
SINGLE/MATCHED MOUNTINGS
Bore Diameter 17 – 25 mm
B
2B
r
Contact i f0 Fa*
Angle Cor
2B
2B
r1
jD
jd
jDa
a0
jd a
jd b
jd a jDa
jD b
15º
25º
30º
40º
—
—
—
rb
ra
ra
r
0.178
0.357
0.714
1.07
1.43
2.14
3.57
5.35
ra
rb
ra
r1
a0
e
0.38
0.40
0.43
0.46
0.47
0.50
0.55
0.56
0.68
0.80
1.14
Single, DT
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
0
0.44 1.47
1
0
0.44 1.40
1
0
0.44 1.30
1
0
0.44 1.23
1
0
0.44 1.19
1
0
0.44 1.12
1
0
0.44 1.02
1
0
0.44 1.00
1
0
0.41 0.87
1
0
0.39 0.76
1
0
0.35 0.57
DB or DF
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
1.65 0.72 2.39
1
1.57 0.72 2.28
1
1.46 0.72 2.11
1
1.38 0.72 2.00
1
1.34 0.72 1.93
1
1.26 0.72 1.82
1
1.14 0.72 1.66
1
1.12 0.72 1.63
1
0.92 0.67 1.41
1
0.78 0.63 1.24
1
0.55 0.57 0.93
* For i , use 2 for DB, DF and 1 for DT
Static Equivalent Load
Contact
Angle
15º
25º
30º
40º
a
Single
Back-to-Back
DB
Boundary Dimensions
Basic Load Ratings (Single)
(mm)
d
D
B
Face-to-Face
DF
(N)
r
r1
Cr
Factor
{kgf}
C 0r
Cr
C 0r
f0
Tandem
DT
Limiting
Speeds (1)
(min –1)
Grease
Oil
Eff.Load Abutment and Fillet Mass
(kg)
Centers Dimensions (mm)
(mm)
17
20
25
da
Da
min.
max.
a
min. min.
ra
Bearing Numbers (2)
Single
Duplex
Cr
{kgf}
C 0r
Cr
X0
0.5
0.5
0.5
0.5
DB or DF
Y0
0.46
0.38
0.33
0.26
X0
1
1
1
1
Y0
0.92
0.76
0.66
0.52
Limiting
Load Center
Speeds (1) (Matched) Spacings (mm)
Basic Load Ratings (Matched)
(N)
P0=X 0Fr +Y 0Fa
Single, DT
C 0r
(min –1)
Grease
Oil
DB
a0
DF
max. approx.
Single or DT
mounting
When
F r >0.5F r +Y 0 F a
use P0=Fr
Abutment and Fillet
Dimensions (mm)
db (3)
Db
rb (3)
min.
max.
max.
30
30
35
7 0.3 0.15
7 0.3 0.15
10 0.3 0.15
4 750
5 000
6 400
2 800
2 940
3 800
485
510
655
286 — 30 000 40 000
299 14.8 34 000 48 000
390 — 22 000 30 000
9.0
6.6
12.5
19.5
19.5
19.5
27.5
27.5
32.5
0.3 0.017
0.3 0.017
0.3 0.040
7903 A5 DB DF DT
7903 C DB DF DT
7003 A DB DF DT
7 750
8 150
10 400
5 600
5 850
7 650
790
830
1 060
570 24 000 32 000
600 28 000 38 000
780 17 000 24 000
18.0
13.3
25.0
4.0
0.7
5.0
—
—
18.2
28.8
28.8
33.8
0.15
0.15
0.15
35
40
40
10 0.3 0.15
12 0.6 0.3
12 0.6 0.3
6 600
10 800
9 950
3 800
6 000
5 500
675
1 100
1 010
390 14.5 32 000 43 000
610 — 20 000 28 000
565 — 14 000 19 000
8.5
14.2
18.0
19.5
22
22
32.5
35
35
0.3 0.044
0.6 0.067
0.6 0.068
7003 C
7203 A
7203 B
DB DF DT
DB DF DT
DB DF DT
10 700
17 600
16 100
7 600
12 000
11 000
1 100
1 790
1 650
775 26 000 34 000
1 220 16 000 22 000
1 130 11 000 15 000
17.0
28.5
35.9
3.0
4.5
11.9
—
19.5
19.5
33.8
37.5
37.5
0.15
0.3
0.3
40
40
47
12 0.6 0.3
12 0.6 0.3
14 1 0.6
11 600
10 900
15 900
6 100
5 850
8 650
1 180
1 110
1 630
625 — 16 000 22 000
595 13.3 28 000 38 000
880 — 14 000 19 000
18.2
9.8
16.2
22
22
23
35
35
41
0.6 0.065
0.6 0.075
1
0.116
*7203 BEA
7203 C DB DF DT
7303 A DB DF DT
—
17 600
25 900
—
11 700
17 300
—
1 800
2 640
— 13 000 18 000
1 190 22 000 32 000
1 760 11 000 15 000
36.3
19.6
32.5
12.3
4.4
4.5
19.5
—
22
37.5
37.5
42
0.3
0.3
0.6
47
47
14 1
14 1
14 800
16 800
8 000
8 300
1 510
1 720
820
850
13 000 17 000
14 000 20 000
20.4
20.4
23
23
41
41
1
1
0.118
0.113
7303 B DB DF DT
*7303 BEA
24 000
—
16 000
—
2 450
—
1 640 10 000 14 000
— 11 000 16 000
40.9
40.9
12.9
12.9
22
22
42
42
0.6
0.6
37
37
42
9 0.3 0.15
9 0.3 0.15
12 0.6 0.3
6 600
6 950
10 800
4 050
4 250
6 600
675
710
1 110
410 — 24 000 32 000
430 14.9 28 000 38 000
670 — 18 000 24 000
11.1
8.3
14.9
22.5
22.5
25
34.5
34.5
37
0.3 0.036
0.3 0.036
0.6 0.068
7904 A5 DB DF DT
7904 C DB DF DT
7004 A DB DF DT
10 700
11 300
17 600
8 100
8 500
13 200
1 090
1 150
1 800
825 19 000 26 000
865 22 000 32 000
1 340 15 000 20 000
22.3
16.6
29.9
4.3
1.4
5.9
—
—
22.5
35.8
35.8
39.5
0.15
0.15
0.3
42
47
47
12 0.6 0.3
14 1 0.6
14 1 0.6
11 100
14 500
13 300
6 550
8 300
7 650
1 130
1 480
1 360
665 14.0 26 000 36 000
845 — 17 000 22 000
780 — 12 000 16 000
10.1
16.7
21.1
25
26
26
37
41
41
0.6 0.076
1
0.106
1
0.109
7004 C
7204 A
7204 B
DB DF DT
DB DF DT
DB DF DT
18 000
23 500
21 600
13 100
16 600
15 300
1 840
2 400
2 210
1 330 20 000 30 000
1 690 13 000 19 000
1 560 9 500 13 000
20.3
33.3
42.1
3.7
5.3
14.1
—
25
25
39.5
42
42
0.3
0.6
0.6
47
47
52
14 1 0.6
14 1 0.6
15 1.1 0.6
15 600
14 600
18 700
8 150
8 050
10 400
1 590
1 480
1 910
830 — 13 000 19 000
825 13.3 24 000 34 000
1 060 — 13 000 17 000
21.1
11.5
17.9
26
26
27
41
41
45
1
1
1
0.103
0.118
0.146
*7204 BEA
7204 C DB DF DT
7304 A DB DF DT
—
23 600
30 500
—
16 100
20 800
—
2 410
3 100
— 11 000 16 000
1 650 19 000 26 000
2 130 10 000 13 000
42.1
23.0
35.8
14.1
5.0
5.8
25
—
25
42
42
47
0.6
0.6
0.6
52
52
15 1.1 0.6
15 1.1 0.6
17 300
19 800
9 650
10 500
1 770
2 020
985
1 070
11 000 15 000
13 000 18 000
22.6
22.6
27
27
45
45
1
1
0.15
0.149
7304 B DB DF DT
*7304 BEA
28 200
—
19 300
—
2 870
—
1 970 9 000 12 000
— 10 000 14 000
45.2
45.2
15.2
15.2
25
25
47
47
0.6
0.6
42
42
47
9 0.3 0.15
9 0.3 0.15
12 0.6 0.3
7 450
7 850
11 300
5 150
5 400
7 400
760
800
1 150
525 — 20 000 28 000
555 15.5 24 000 34 000
750 — 16 000 22 000
12.3
9.0
16.4
27.5
27.5
30
39.5
39.5
42
0.3 0.043
0.3 0.042
0.6 0.079
7905 A5 DB DF DT
7905 C DB DF DT
7005 A DB DF DT
12 100
12 700
18 300
10 300
10 800
14 800
1 230
1 300
1 870
1 050 16 000 22 000
1 110 19 000 26 000
1 510 13 000 17 000
24.6
18.0
32.8
6.6
0.0
8.8
—
—
27.5
40.8
40.8
44.5
0.15
0.15
0.3
47
52
52
12 0.6 0.3
15 1 0.6
15 1 0.6
11 700
16 200
14 800
7 400
10 300
9 400
1 190
1 650
1 510
755 14.7 22 000 30 000
1 050 — 15 000 20 000
960 — 10 000 14 000
10.8
18.6
23.7
30
31
31
42
46
46
0.6 0.089
1
0.13
1
0.133
7005 C
7205 A
7205 B
DB DF DT
DB DF DT
DB DF DT
19 000
26 300
24 000
14 800
20 500
18 800
1 940
2 690
2 450
1 510 18 000 26 000
2 090 12 000 16 000
1 920 8 500 11 000
21.6
37.2
47.3
2.4
7.2
17.3
—
30
30
44.5
47
47
0.3
0.6
0.6
52
52
62
15 1 0.6
15 1 0.6
17 1.1 0.6
17 600
16 600
26 400
10 200
10 200
15 800
1 790
1 690
2 690
1 040 — 12 000 17 000
1 040 14.0 22 000 28 000
1 610 — 10 000 14 000
23.7
12.7
21.1
31
31
32
46
46
55
1
1
1
*7205 BEA
7205 C DB DF DT
7305 A DB DF DT
—
27 000
43 000
—
20 400
31 500
—
2 750
4 400
— 9 500 14 000
2 080 17 000 24 000
3 250 8 500 11 000
47.3
25.3
42.1
17.3
4.7
8.1
30
—
30
47
47
57
0.6
0.6
0.6
0.6
0.6
—
—
—
—
Notes (1) For applications operating near the limiting speed, refer to Page B49.
(2) The suffixes A, A5, B, and C represent contact angles of 30°, 25°, 40°, and 15° respectively.
B 52
B046-075E.indd 52-53
0.127
0.143
0.235
Note (3) For bearings marked — in the column for db, db and rb for shafts are da (min) and ra (max) respectively.
Remarks The bearings denoted by an asterisk (*) are NSKHPS Angular contact ball bearings and the column of Duplex in Bearing
Numbers indicates the universal matching.
B 53
11/5/12 5:29:13 PM
ANGULAR CONTACT BALL BEARINGS
Dynamic Equivalent Load P = X Fr +Y Fa
SINGLE/MATCHED MOUNTINGS
Bore Diameter 25 – 40 mm
B
2B
r
Contact i f0 Fa*
Angle Cor
2B
2B
r1
jD
jd
jDa
a0
jd a
jd b
jd a jDa
jD b
15º
25º
30º
40º
—
—
—
rb
ra
ra
r
0.178
0.357
0.714
1.07
1.43
2.14
3.57
5.35
ra
rb
ra
r1
a0
e
0.38
0.40
0.43
0.46
0.47
0.50
0.55
0.56
0.68
0.80
1.14
Single, DT
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
0
0.44 1.47
1
0
0.44 1.40
1
0
0.44 1.30
1
0
0.44 1.23
1
0
0.44 1.19
1
0
0.44 1.12
1
0
0.44 1.02
1
0
0.44 1.00
1
0
0.41 0.87
1
0
0.39 0.76
1
0
0.35 0.57
DB or DF
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
1.65 0.72 2.39
1
1.57 0.72 2.28
1
1.46 0.72 2.11
1
1.38 0.72 2.00
1
1.34 0.72 1.93
1
1.26 0.72 1.82
1
1.14 0.72 1.66
1
1.12 0.72 1.63
1
0.92 0.67 1.41
1
0.78 0.63 1.24
1
0.55 0.57 0.93
* For i , use 2 for DB, DF and 1 for DT
Static Equivalent Load
Contact
Angle
15º
25º
30º
40º
a
Single
Back-to-Back
DB
Boundary Dimensions
Basic Load Ratings (Single)
(mm)
d
D
B
Face-to-Face
DF
(N)
r
r1
Cr
Factor
{kgf}
C 0r
Cr
C 0r
f0
Tandem
DT
Limiting
Speeds (1)
(min –1)
Grease
Oil
Eff.Load Abutment and Fillet Mass
(kg)
Centers Dimensions (mm)
(mm)
Da
max.
ra
Single
Duplex
Cr
{kgf}
C 0r
Cr
DB or DF
Y0
0.46
0.38
0.33
0.26
X0
1
1
1
1
Y0
0.92
0.76
0.66
0.52
Limiting
Load Center
Speeds (1) (Matched) Spacings (mm)
Basic Load Ratings (Matched)
(N)
X0
0.5
0.5
0.5
0.5
C 0r
(min –1)
Grease
Oil
DB
a0
DF
max. approx.
Single or DT
mounting
When
F r >0.5F r +Y 0 F a
use P0=Fr
Abutment and Fillet
Dimensions (mm)
db (3)
Db
rb (3)
min.
max.
max.
25
62
62
17 1.1 0.6
17 1.1 0.6
24 400
27 200
14 600
14 900
2 490
2 770
1 490
1 520
9 000 13 000
10 000 15 000
26.7
26.8
32
32
55
55
1
1
0.241
0.229
7305 B DB DF DT
*7305 BEA
39 500
—
29 300
—
4 050
—
2 980
—
7 500 10 000
8 500 12 000
53.5
53.5
19.5
19.5
30
30
57
57
0.6
0.6
30
47
47
55
9 0.3 0.15
9 0.3 0.15
13 1 0.6
7 850
8 300
14 500
5 950
6 250
10 100
800
845
1 480
605 — 18 000 24 000
640 15.9 22 000 28 000
1 030 — 13 000 18 000
13.5
9.7
18.8
32.5
32.5
36
44.5
44.5
49
0.3 0.049
0.3 0.049
1
0.116
7906 A5 DB DF DT
7906 C DB DF DT
7006 A DB DF DT
12 800
13 500
23 600
11 900
12 500
20 200
1 300
1 380
2 410
1 210 14 000 19 000
1 280 17 000 24 000
2 060 11 000 15 000
27.0
19.3
37.5
9.0
1.3
11.5
—
—
35
45.8
45.8
50
0.15
0.15
0.6
55
62
62
13 1
16 1
16 1
0.6
0.6
0.6
15 100
22 500
20 500
10 300
14 800
13 500
1 540
2 300
2 090
1 050 14.9 19 000 26 000
1 510 — 12 000 17 000
1 380 —
8 500 12 000
12.2
21.3
27.3
36
36
36
49
56
56
1
1
1
0.134
0.197
0.202
7006 C
7206 A
7206 B
DB DF DT
DB DF DT
DB DF DT
24 600
36 500
33 500
20 500
29 500
27 000
2 510
3 750
3 400
2 090 15 000 22 000
3 000 10 000 13 000
2 760 7 100 9 500
24.4
42.6
54.6
1.6
10.6
22.6
—
35
35
50
57
57
0.6
0.6
0.6
62
62
72
16 1 0.6
16 1 0.6
19 1.1 0.6
23 700
23 000
33 500
14 300
14 700
20 900
2 420
2 350
3 450
1 460 — 10 000 14 000
1 500 13.9 18 000 24 000
2 130 —
9 000 12 000
27.3
14.2
24.2
36
36
37
56
56
65
1
1
1
0.194
0.222
0.346
*7206 BEA
7206 C DB DF DT
7306 A DB DF DT
—
37 500
54 500
—
29 300
41 500
—
3 800
5 600
— 8 000 11 000
2 990 14 000 20 000
4 250 7 100 9 500
54.6
28.3
48.4
22.6
3.7
10.4
35
—
35
57
57
67
0.6
0.6
0.6
72
72
19 1.1 0.6
19 1.1 0.6
31 000
36 500
19 300
20 600
3 150
3 700
1 960
2 100
8 000 11 000
9 000 13 000
30.9
30.9
37
37
65
65
1
1
0.354
0.336
7306 B DB DF DT
*7306 BEA
50 500
—
38 500
—
5 150
—
3 950
—
6 300 8 500
7 100 10 000
61.8
61.8
23.8
23.8
35
35
67
67
0.6
0.6
55
55
62
10 0.6 0.3
10 0.6 0.3
14 1 0.6
11 400
12 100
18 300
8 700
9 150
13 400
1 170
1 230
1 870
885 — 15 000 20 000
930 15.7 18 000 24 000
1 370 — 12 000 16 000
15.5
11.0
21.0
40
40
41
50
50
56
0.6 0.074
0.6 0.074
1
0.153
7907 A5 DB DF DT
7907 C DB DF DT
7007 A DB DF DT
18 600
19 600
29 700
17 400
18 300
26 800
1 890
2 000
3 050
1 770 12 000 17 000
1 860 14 000 20 000
2 740 9 500 13 000
31.0
22.1
42.0
11.0
2.1
14.0
—
—
40
52.5
52.5
57
0.3
0.3
0.6
62
72
72
14 1 0.6
17 1.1 0.6
17 1.1 0.6
19 100
29 700
27 100
13 700
20 100
18 400
1 950
3 050
2 760
1 390 15.0 17 000 22 000
2 050 — 10 000 14 000
1 870 —
7 500 10 000
13.5
23.9
30.9
41
42
42
56
65
65
1
1
1
7007 C
7207 A
7207 B
DB DF DT
DB DF DT
DB DF DT
31 000
48 500
44 000
27 300
40 000
36 500
3 150
4 900
4 500
2 790 13 000 19 000
4 100 8 500 12 000
3 750 6 000 8 000
27.0
47.9
61.9
1.0
13.9
27.9
—
40
40
57
67
67
0.6
0.6
0.6
72
72
80
17 1.1 0.6
17 1.1 0.6
21 1.5 1
32 500
30 500
40 000
19 600
19 900
26 300
3 300
3 100
4 050
1 990 —
8 500 12 000
2 030 13.9 15 000 20 000
2 680 —
8 000 10 000
30.9
15.7
27.1
42
42
44
65
65
71
1
0.271
1
0.32
1.5 0.464
*7207BEA
7207 C DB DF DT
7307 A DB DF DT
—
49 500
65 000
—
40 000
52 500
—
5 050
6 600
— 6 700 9 500
4 050 12 000 17 000
5 350 6 300 8 500
61.9
31.3
54.2
27.9
2.7
12.2
40
—
41
67
67
74
0.6
0.6
1
80
80
21 1.5 1
21 1.5 1
36 500
40 500
24 200
24 400
3 750
4 100
2 460
2 490
7 100 9 500
8 000 11 000
34.6
34.6
44
44
71
71
1.5 0.474
1.5 0.451
7307 B DB DF DT
*7307 BEA
59 500
—
48 500
—
6 100
—
4 950
—
7 500
9 000
69.2
69.2
27.2
27.2
41
41
74
74
1
1
62
62
68
12 0.6 0.3
12 0.6 0.3
15 1 0.6
14 300
15 100
19 500
11 200
11 700
15 400
1 460
1 540
1 990
1 140 — 14 000 18 000
1 200 15.7 16 000 22 000
1 570 — 10 000 14 000
17.9
12.8
23.1
45
45
46
57
57
62
0.6 0.11
0.6 0.109
1
0.19
7908 A5 DB DF DT
7908 C DB DF DT
7008 A DB DF DT
23 300
24 600
31 500
22 300
23 500
31 000
2 370
2 510
3 250
2 270 11 000 15 000
2 390 13 000 18 000
3 150 8 500 11 000
35.8
25.7
46.2
11.8
1.7
16.2
—
—
45
59.5
59.5
63
0.3
0.3
0.6
68
80
80
15 1 0.6
18 1.1 0.6
18 1.1 0.6
20 600
35 500
32 000
15 900
25 100
23 000
2 100
3 600
3 250
1 620 15.4 15 000 20 000
2 560 —
9 500 13 000
2 340 —
6 700 9 000
14.7
26.3
34.2
46
47
47
62
73
73
1
1
1
7008 C
7208 A
7208 B
33 500
57 500
52 000
32 000
50 500
46 000
3 400
5 850
5 300
3 250 12 000 17 000
5 150 7 500 10 000
4 700 5 300 7 500
29.5
52.6
68.3
0.5
16.6
32.3
—
45
45
63
75
75
0.6
0.6
0.6
35
40
—
—
da
min.
a
min. min.
Bearing Numbers (2)
P0=X 0Fr +Y 0Fa
Single, DT
—
—
—
—
Notes (1) For applications operating near the limiting speed, refer to Page B49.
(2) The suffixes A, A5, B, and C represent contact angles of 30°, 25°, 40°, and 15° respectively.
B 54
B046-075E.indd 54-55
0.173
0.287
0.294
0.213
0.375
0.383
DB DF DT
DB DF DT
DB DF DT
5 600
6 300
Note (3) For bearings marked — in the column for db, db and rb for shafts are da (min.) and ra (max.) respectively.
Remarks The bearings denoted by an asterisk (*) are NSKHPS Angular contact ball bearings and the column of Duplex in Bearing
Numbers indicates the universal matching.
B 55
11/5/12 5:29:15 PM
ANGULAR CONTACT BALL BEARINGS
Dynamic Equivalent Load P = X Fr +Y Fa
SINGLE/MATCHED MOUNTINGS
Bore Diameter 40 – 55 mm
B
2B
r
Contact i f0 Fa*
Angle Cor
2B
2B
r1
jD
jd
jDa
a0
jd a
jd b
jd a jDa
jD b
15º
25º
30º
40º
—
—
—
rb
ra
ra
r
0.178
0.357
0.714
1.07
1.43
2.14
3.57
5.35
ra
rb
ra
r1
a0
e
0.38
0.40
0.43
0.46
0.47
0.50
0.55
0.56
0.68
0.80
1.14
Single, DT
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
0
0.44 1.47
1
0
0.44 1.40
1
0
0.44 1.30
1
0
0.44 1.23
1
0
0.44 1.19
1
0
0.44 1.12
1
0
0.44 1.02
1
0
0.44 1.00
1
0
0.41 0.87
1
0
0.39 0.76
1
0
0.35 0.57
DB or DF
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
1.65 0.72 2.39
1
1.57 0.72 2.28
1
1.46 0.72 2.11
1
1.38 0.72 2.00
1
1.34 0.72 1.93
1
1.26 0.72 1.82
1
1.14 0.72 1.66
1
1.12 0.72 1.63
1
0.92 0.67 1.41
1
0.78 0.63 1.24
1
0.55 0.57 0.93
* For i , use 2 for DB, DF and 1 for DT
Static Equivalent Load
Contact
Angle
15º
25º
30º
40º
a
Single
Back-to-Back
DB
Boundary Dimensions
Basic Load Ratings (Single)
(mm)
d
D
B
Face-to-Face
DF
(N)
r
r1
Cr
Factor
{kgf}
C 0r
Cr
C 0r
f0
Tandem
DT
Limiting
Speeds (1)
(min –1)
Grease
Oil
Eff.Load Abutment and Fillet Mass
Centers Dimensions (mm)
(kg)
(mm)
40
45
50
55
da
Da
min.
max.
max. approx.
a
min. min.
ra
Bearing Numbers (2)
Single
Duplex
Cr
{kgf}
C 0r
Cr
X0
0.5
0.5
0.5
0.5
DB or DF
Y0
0.46
0.38
0.33
0.26
X0
1
1
1
1
Y0
0.92
0.76
0.66
0.52
Limiting
Load Center
Speeds (1) (Matched) Spacings (mm)
Basic Load Ratings (Matched)
(N)
P0=X 0Fr +Y 0Fa
Single, DT
C 0r
(min –1)
Grease
Oil
DB
a0
DF
Single or DT
mounting
When
F r >0.5F r +Y 0 F a
use P0=Fr
Abutment and Fillet
Dimensions (mm)
db (3)
Db
rb (3)
min.
max.
max.
80
80
90
18 1.1 0.6
18 1.1 0.6
23 1.5 1
38 500
36 500
49 000
24 500
25 200
33 000
3 900
3 700
5 000
2 500 —
7 500 11 000
2 570 14.1 14 000 19 000
3 350 —
7 100 9 000
34.2
17.0
30.3
47
47
49
73
73
81
1
0.357
1
0.418
1.5 0.633
*7208 BEA
7208 C DB DF DT
7308 A DB DF DT
—
59 000
79 500
—
50 500
66 000
—
6 000
8 100
— 6 000 8 500
5 150 11 000 15 000
6 700 5 600 7 500
68.3
34.1
60.5
32.3
1.9
14.5
45
—
46
75
75
84
0.6
0.6
1
90
90
23 1.5 1
23 1.5 1
45 000
53 000
30 500
33 000
4 550
5 400
3 100
3 350
6 300 8 500
7 100 10 000
38.8
38.8
49
49
81
81
1.5 0.648
1.5 0.619
7308 B DB DF DT
*7308 BEA
73 000
—
60 500
—
7 400
—
6 200
—
6 700
8 000
77.5
77.5
31.5
31.5
46
46
84
84
1
1
68
68
75
12 0.6 0.3
12 0.6 0.3
16 1 0.6
15 100
16 000
23 100
12 700
13 400
18 700
1 540
1 630
2 360
1 290 — 12 000 17 000
1 360 16.0 14 000 20 000
1 910 —
9 500 13 000
19.2
13.6
25.3
50
50
51
63
63
69
0.6 0.13
0.6 0.129
1
0.25
7909 A5 DB DF DT
7909 C DB DF DT
7009 A DB DF DT
24 600
26 000
37 500
25 400
26 800
37 500
2 510
2 660
3 850
2 590 9 500 13 000
2 730 12 000 16 000
3 800 7 500 10 000
38.4
27.1
50.6
14.4
3.1
18.6
—
—
50
65.5
65.5
70
0.3
0.3
0.6
75
85
85
16 1 0.6
19 1.1 0.6
19 1.1 0.6
24 400
39 500
36 000
19 300
28 700
26 200
2 490
4 050
3 650
1 960 15.4 14 000 19 000
2 930 —
8 500 12 000
2 680 —
6 300 8 500
16.0
28.3
36.8
51
52
52
69
78
78
1
1
1
7009 C
7209 A
7209 B
DB DF DT
DB DF DT
DB DF DT
39 500
64 500
58 500
38 500
57 500
52 500
4 050
6 550
5 950
3 950 11 000 15 000
5 850 7 100 9 500
5 350 5 000 6 700
32.1
56.5
73.5
0.1
18.5
35.5
—
50
50
70
80
80
0.6
0.6
0.6
85
85
100
19 1.1 0.6
19 1.1 0.6
25 1.5 1
40 500
41 000
63 500
27 100
28 800
43 500
4 100
4 150
6 450
2 760 —
7 100 10 000
2 940 14.2 12 000 17 000
4 450 —
6 300 8 500
36.8
18.2
33.4
52
52
54
78
78
91
1
0.40
1
0.468
1.5 0.848
*7209 BEA
7209 C DB DF DT
7309 A DB DF DT
—
66 500
103 000
—
57 500
87 000
—
6 750
10 500
— 5 600 8 000
5 850 10 000 14 000
8 900 5 000 6 700
73.5
36.4
66.9
35.5
1.6
16.9
50
—
51
80
80
94
0.6
0.6
1
100
100
25 1.5 1
25 1.5 1
58 500
62 500
40 000
39 500
5 950
6 400
4 100
4 050
7 500
9 000
42.9
42.9
54
54
91
91
1.5 0.869
1.5 0.823
7309 B DB DF DT
*7309 BEA
95 000
—
80 500
—
9 650
—
8 200
—
6 000
7 100
85.8
85.8
35.8
35.8
51
51
94
94
1
1
72
72
80
12 0.6 0.3
12 0.6 0.3
16 1 0.6
15 900
16 900
24 500
14 200
15 000
21 100
1 630
1 720
2 500
1 450 — 11 000 15 000
1 530 16.2 13 000 18 000
2 150 —
8 500 12 000
20.2
14.2
26.8
55
55
56
67
67
74
0.6 0.132
0.6 0.13
1
0.263
7910 A5 DB DF DT
7910 C DB DF DT
7010 A DB DF DT
25 900
27 400
40 000
28 400
30 000
42 000
2 640
2 800
4 050
2 900 9 000 12 000
3 050 11 000 15 000
4 300 7 100 9 500
40.5
28.3
53.5
16.5
4.3
21.5
—
—
55
69.5
69.5
75
0.3
0.3
0.6
80
90
90
16 1 0.6
20 1.1 0.6
20 1.1 0.6
26 000
41 500
37 500
21 900
31 500
28 600
2 650
4 200
3 800
2 230 15.7 12 000 17 000
3 200 —
8 000 11 000
2 920 —
5 600 8 000
16.7
30.2
39.4
56
57
57
74
83
83
1
1
1
0.293
0.466
0.477
7010 C
7210 A
7210 B
DB DF DT
DB DF DT
DB DF DT
42 000
67 000
60 500
44 000
63 000
57 000
4 300
6 850
6 200
4 450 10 000 14 000
6 400 6 300 9 000
5 850 4 500 6 300
33.4
60.4
78.7
1.4
20.4
38.7
—
55
55
75
85
85
0.6
0.6
0.6
90
90
110
20 1.1 0.6
20 1.1 0.6
27 2 1
42 000
43 000
74 000
29 700
31 500
52 000
4 300
4 350
7 550
3 050 —
6 300 9 500
3 250 14.5 12 000 16 000
5 300 —
5 600 7 500
39.4
19.4
36.6
57
57
60
83
83
100
1
1
2
0.453
0.528
1.1
*7210 BEA
7210 C DB DF DT
7310 A DB DF DT
—
69 500
121 000
—
63 500
104 000
110
110
27 2
27 2
68 000
78 000
48 000
50 500
6 950
7 950
4 900
5 150
6 700
8 000
47.1
47.1
60
60
100
100
2
2
1.12
1.07
7310 B DB DF DT
*7310 BEA
111 000
—
18 100
19 100
32 500
16 800
17 700
27 700
1 840
1 950
3 300
1 710 — 10 000 14 000
1 810 16.3 12 000 16 000
2 830 —
7 500 11 000
22.2
15.5
29.9
61
61
62
74
74
83
1
1
1
0.184
0.182
0.391
7911 A5 DB DF DT
7911 C DB DF DT
7011 A DB DF DT
29 300
31 000
52 500
80
80
90
1
1
13 1 0.6
13 1 0.6
18 1.1 0.6
—
—
—
—
—
—
5 600
6 300
5 000
5 600
Notes (1) For applications operating near the limiting speed, refer to Page B49.
(2) The suffixes A, A5, B, and C represent contact angles of 30°, 25°, 40°, and 15° respectively.
B 56
B046-075E.indd 56-57
0.274
0.411
0.421
5 000
5 600
4 500
5 000
—
—
7 100 6 450
12 300 10 600
5 000 7 500
9 500 13 000
4 500 6 000
78.7
38.7
73.2
38.7
1.3
19.2
55
—
56
85
85
104
0.6
0.6
1
96 000
—
11 300
—
9 800
—
4 000
4 500
5 600
6 700
94.1
94.1
40.1
40.1
56
56
104
104
1
1
33 500
35 500
55 500
2 990
3 150
5 350
3 400
3 600
5 650
8 000 11 000
9 500 13 000
6 300 8 500
44.5
31.1
59.9
18.5
5.1
23.9
—
—
60
75
75
85
0.6
0.6
0.6
Note (3) For bearings marked — in the column for db, db and rb for shafts are da (min.) and ra (max.) respectively.
Remarks The bearings denoted by an asterisk (*) are NSKHPS Angular contact ball bearings and the column of Duplex in Bearing
Numbers indicates the universal matching.
B 57
11/5/12 5:29:16 PM
ANGULAR CONTACT BALL BEARINGS
Dynamic Equivalent Load P = X Fr +Y Fa
SINGLE/MATCHED MOUNTINGS
Bore Diameter 55 – 65 mm
B
2B
r
Contact i f0 Fa*
Angle Cor
2B
2B
r1
jD
jd
jDa
a0
jd a
jd b
jd a jDa
jD b
15º
25º
30º
40º
—
—
—
rb
ra
ra
r
0.178
0.357
0.714
1.07
1.43
2.14
3.57
5.35
ra
rb
ra
r1
a0
e
0.38
0.40
0.43
0.46
0.47
0.50
0.55
0.56
0.68
0.80
1.14
Single, DT
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
0
0.44 1.47
1
0
0.44 1.40
1
0
0.44 1.30
1
0
0.44 1.23
1
0
0.44 1.19
1
0
0.44 1.12
1
0
0.44 1.02
1
0
0.44 1.00
1
0
0.41 0.87
1
0
0.39 0.76
1
0
0.35 0.57
DB or DF
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
1.65 0.72 2.39
1
1.57 0.72 2.28
1
1.46 0.72 2.11
1
1.38 0.72 2.00
1
1.34 0.72 1.93
1
1.26 0.72 1.82
1
1.14 0.72 1.66
1
1.12 0.72 1.63
1
0.92 0.67 1.41
1
0.78 0.63 1.24
1
0.55 0.57 0.93
* For i , use 2 for DB, DF and 1 for DT
Static Equivalent Load
Contact
Angle
15º
25º
30º
40º
a
Single
Back-to-Back
DB
Boundary Dimensions
Basic Load Ratings (Single)
(mm)
d
D
B
Face-to-Face
DF
(N)
r
r1
Cr
Factor
{kgf}
C 0r
Cr
C 0r
f0
Tandem
DT
Limiting
Speeds (1)
(min –1)
Grease
Oil
Eff.Load Abutment and Fillet Mass
(kg)
Centers Dimensions (mm)
(mm)
55
60
65
da
Da
min.
max.
max. approx.
a
min. min.
ra
18 1.1 0.6
21 1.5 1
21 1.5 1
34 000
51 000
46 500
28 600
39 500
36 000
3 500
5 200
4 700
2 920 15.5 11 000 15 000
4 050 —
7 100 10 000
3 700 —
5 300 7 100
18.7
32.9
43.0
62
64
64
83
91
91
1
0.43
1.5 0.613
1.5 0.627
100
100
120
21 1.5 1
21 1.5 1
29 2 1
51 500
53 000
86 000
37 000
40 000
61 500
5 250
5 400
8 750
3 800 —
6 000 8 500
4 100 14.5 10 000 14 000
6 250 —
5 000 6 700
43.0
20.9
39.8
64
64
65
91
91
110
120
120
29 2
29 2
79 000
89 000
56 500
58 500
8 050
9 100
5 750
6 000
6 300
7 500
51.2
51.2
65
65
—
—
4 500
5 000
7011 C
7211 A
7211 B
Duplex
Cr
{kgf}
C 0r
DB DF DT
DB DF DT
DB DF DT
55 500
83 000
75 000
57 500
79 000
72 000
1.5 0.596
1.5 0.688
2
1.41
*7211 BEA
7211 C DB DF DT
7311 A DB DF DT
—
86 000
139 000
110
110
2
2
1.45
1.36
7311 B DB DF DT
*7311 BEA
1
1
1
0.197
0.194
0.417
7912 A5 DB DF DT
7912 C DB DF DT
7012 A DB DF DT
Cr
5 650
8 450
7 650
X0
0.5
0.5
0.5
0.5
DB or DF
Y0
0.46
0.38
0.33
0.26
X0
1
1
1
1
Y0
0.92
0.76
0.66
0.52
Limiting
Load Center
Speeds (1) (Matched) Spacings (mm)
Basic Load Ratings (Matched)
(N)
Single
90
100
100
1
1
Bearing Numbers (2)
P0=X 0Fr +Y 0Fa
Single, DT
C 0r
(min –1)
Grease
Oil
DB
a0
DF
Single or DT
mounting
When
F r >0.5F r +Y 0 F a
use P0=Fr
Abutment and Fillet
Dimensions (mm)
db (3)
Db
rb (3)
min.
max.
max.
0.6
1
1
5 850
8 050
7 350
9 000 12 000
6 000 8 000
4 000 5 600
37.4
65.7
86.0
1.4
23.7
44.0
—
61
61
85
94
94
—
80 000
123 000
—
—
8 800 8 150
14 200 12 500
4 500 6 700
8 500 12 000
4 000 5 600
86.0
41.7
79.5
44.0
0.3
21.5
61
—
61
94
94
114
1
1
1
128 000
—
113 000
—
13 100 11 500
—
—
3 600
4 000
5 000
6 000
102.4
102.4
44.4
44.4
61
61
114
114
1
1
29 800
31 500
53 500
35 500
37 500
59 000
3 050
3 200
5 450
3 600
3 800
6 000
7 500 10 000
9 000 12 000
6 000 8 000
46.8
32.4
62.7
20.8
6.4
26.7
—
—
65
80
80
90
0.6
0.6
0.6
DB DF DT
DB DF DT
DB DF DT
57 000
100 000
91 000
61 500
97 500
89 000
5 800
10 200
9 300
6 250
9 950
9 050
8 500 12 000
5 300 7 100
3 800 5 300
38.8
71.1
93.3
2.8
27.1
49.3
—
66
66
90
104
104
0.6
1
1
93.3
44.8
85.9
49.3
0.8
23.9
66
—
67
104
104
123
1
1
1
4 500
5 600
110.7
110.7
48.7
48.7
67
67
123
123
1
1
3 950
4 200
6 700
7 100 9 500
8 500 12 000
5 600 7 500
49.1
33.8
65.6
23.1
7.8
29.6
—
—
70
85
85
95
0.6
0.6
0.6
85
85
95
13 1 0.6
13 1 0.6
18 1.1 0.6
18 300
19 400
33 000
17 700
18 700
29 500
1 870
1 980
3 350
1 810 —
9 500 13 000
1 910 16.5 11 000 15 000
3 000 —
7 100 10 000
23.4
16.2
31.4
66
66
67
79
79
88
95
110
110
18 1.1 0.6
22 1.5 1
22 1.5 1
35 000
62 000
56 000
30 500
48 500
44 500
3 600
6 300
5 700
3 150 15.7 10 000 14 000
4 950 —
6 700 9 000
4 550 —
4 800 6 300
19.4
35.5
46.7
67
69
69
88
101
101
1
0.46
1.5 0.798
1.5 0.815
110
110
130
22 1.5 1
22 1.5 1
31 2.1 1.1
61 500
64 000
98 000
45 000
49 000
71 500
6 300
6 550
10 000
4 600 —
5 000 14.4
7 250 —
5 300 7 500
9 500 13 000
4 800 6 300
46.7
22.4
42.9
69
69
72
101
101
118
1.5 0.791
1.5 0.889
2
1.74
*7212 BEA
7212 C DB DF DT
7312 A DB DF DT
—
104 000
159 000
—
98 500
143 000
—
—
10 600 10 000
16 200 14 500
4 300 6 000
7 500 11 000
3 800 5 000
130
130
31 2.1 1.1
31 2.1 1.1
90 000
102 000
65 500
68 500
9 200
10 500
6 700
7 000
4 300
4 800
5 600
6 700
55.4
55.4
72
72
118
118
2
2
1.78
1.7
7312 B DB DF DT
*7312 BEA
146 000
—
131 000
—
14 900 13 400
—
—
3 400
3 800
90
90
100
13 1 0.6
13 1 0.6
18 1.1 0.6
19 100
20 200
35 000
19 400
20 500
33 000
1 940
2 060
3 550
1 980 —
9 000 12 000
2 090 16.7 10 000 14 000
3 350 —
6 700 9 500
24.6
16.9
32.8
71
71
72
84
84
93
1
1
1
0.211
0.208
0.455
7913 A5 DB DF DT
7913 C DB DF DT
7013 A DB DF DT
31 000
33 000
56 500
39 000
41 000
65 500
100
120
120
18 1.1 0.6
23 1.5 1
23 1.5 1
37 000
70 500
63 500
34 500
58 000
52 500
3 800
7 150
6 500
3 500 15.9 10 000 13 000
5 900 —
6 000 8 500
5 350 —
4 300 6 000
20.0
38.2
50.3
72
74
74
93
111
111
1
0.493
1.5 1.03
1.5 1.05
DB DF DT
DB DF DT
DB DF DT
60 500
114 000
103 000
68 500
116 000
105 000
6 150 7 000
11 600 11 800
10 500 10 700
8 000 11 000
4 800 6 700
3 400 4 800
40.1
76.4
100.6
4.1
30.4
54.6
—
71
71
95
114
114
0.6
1
1
120
120
140
23 1.5 1
23 1.5 1
33 2.1 1.1
70 000
73 000
111 000
53 500
58 500
82 000
7 150
7 450
11 300
5 450 —
6 000 14.6
8 350 —
4 800 7 100
9 000 12 000
4 300 6 000
50.3
23.9
46.1
74
74
77
111
111
128
1.5 1.01
1.5 1.14
2
2.12
*7213 BEA
7213 C DB DF DT
7313 A DB DF DT
—
119 000
180 000
—
117 000
164 000
—
—
12 100 12 000
18 400 16 700
3 800
7 100
3 600
5 600
9 500
4 800
100.6
47.8
92.2
54.6
1.8
26.2
71
—
72
114
114
133
1
1
1
140
140
33 2.1 1.1
33 2.1 1.1
102 000
114 000
75 500
77 000
10 400
11 600
7 700
7 850
3 800
4 300
59.5
59.5
77
77
128
128
2
2
7313 B DB DF DT
*7313 BEA
166 000
—
151 000
—
16 900 15 400
—
—
3 200
3 600
4 300
5 000
119.0
119.0
53.0
53.0
72
72
133
133
1
1
—
—
—
—
5 300
6 300
Notes (1) For applications operating near the limiting speed, refer to Page B49.
(2) The suffixes A, A5, B, and C represent contact angles of 30°, 25°, 40°, and 15° respectively.
B 58
B046-075E.indd 58-59
2.17
2.09
7012 C
7212 A
7212 B
7013 C
7213 A
7213 B
3 150
3 350
5 750
Note (3) For bearings marked — in the column for db, db and rb for shafts are da (min.) and ra (max.) respectively.
Remarks The bearings denoted by an asterisk (*) are NSKHPS Angular contact ball bearings and the column of Duplex in Bearing
Numbers indicates the universal matching.
B 59
11/5/12 5:29:17 PM
ANGULAR CONTACT BALL BEARINGS
Dynamic Equivalent Load P = X Fr +Y Fa
SINGLE/MATCHED MOUNTINGS
Bore Diameter 70 – 80 mm
B
2B
r
Contact i f0 Fa*
Angle Cor
2B
2B
r1
jD
jd
jDa
a0
jd a
jd b
jd a jDa
jD b
15º
25º
30º
40º
—
—
—
rb
ra
ra
r
0.178
0.357
0.714
1.07
1.43
2.14
3.57
5.35
ra
rb
ra
r1
a0
Single, DT
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
0
0.44 1.47
1
0
0.44 1.40
1
0
0.44 1.30
1
0
0.44 1.23
1
0
0.44 1.19
1
0
0.44 1.12
1
0
0.44 1.02
1
0
0.44 1.00
1
0
0.41 0.87
1
0
0.39 0.76
1
0
0.35 0.57
e
0.38
0.40
0.43
0.46
0.47
0.50
0.55
0.56
0.68
0.80
1.14
DB or DF
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
1.65 0.72 2.39
1
1.57 0.72 2.28
1
1.46 0.72 2.11
1
1.38 0.72 2.00
1
1.34 0.72 1.93
1
1.26 0.72 1.82
1
1.14 0.72 1.66
1
1.12 0.72 1.63
1
0.92 0.67 1.41
1
0.78 0.63 1.24
1
0.55 0.57 0.93
* For i , use 2 for DB, DF and 1 for DT
Static Equivalent Load
Contact
Angle
15º
25º
30º
40º
a
Single
Back-to-Back
DB
Boundary Dimensions
Basic Load Ratings (Single)
(mm)
d
D
B
Face-to-Face
DF
(N)
r
r1
Cr
Factor
{kgf}
C 0r
Cr
C 0r
f0
Tandem
DT
Limiting
Speeds (1)
(min –1)
Grease
Oil
Eff.Load Abutment and Fillet Mass
Centers Dimensions (mm)
(kg)
(mm)
da
Da
min.
max.
a
min. min.
ra
Single
16 1 0.6
16 1 0.6
20 1.1 0.6
26 500
28 100
44 000
26 300
27 800
41 500
2 710
2 870
4 500
2 680 —
2 830 16.4
4 200 —
8 000 11 000
9 500 13 000
6 300 8 500
27.8
19.4
36.0
76
76
77
94
94
103
1
1
1
110
125
125
20 1.1 0.6
24 1.5 1
24 1.5 1
47 000
76 500
69 000
43 000
63 500
58 000
4 800
7 800
7 050
4 400 15.7
6 500 —
5 900 —
9 000 12 000
5 600 8 000
4 000 5 600
22.1
40.1
52.9
77
79
79
103
116
116
1
0.698
1.5 1.11
1.5 1.14
125
125
150
24 1.5 1
24 1.5 1
35 2.1 1.1
75 500
79 500
125 000
58 500
64 500
93 500
7 700
8 100
12 700
6 000 —
6 600 14.6
9 550 —
4 500 6 700
8 500 11 000
4 000 5 300
52.9
25.1
49.3
79
79
82
116
116
138
150
150
35 2.1 1.1
35 2.1 1.1
114 000
124 000
86 000
87 500
11 700
12 600
8 750
8 900
3 600
4 000
5 000
6 000
63.6
63.7
82
82
75 105
105
115
16 1 0.6
16 1 0.6
20 1.1 0.6
26 900
28 600
45 000
27 700
29 300
43 500
2 750
2 910
4 600
2 820 —
2 980 16.6
4 450 —
7 500 10 000
9 000 12 000
6 000 8 000
29.0
20.1
37.4
115
130
130
20 1.1 0.6
25 1.5 1
25 1.5 1
48 000
76 000
68 500
45 500
64 500
58 500
4 900
7 750
7 000
4 650 15.9
6 550 —
5 950 —
8 500 12 000
5 600 7 500
3 800 5 300
130
130
160
160
25
25
37
37
8 000 6 450 —
8 450 7 100 14.8
13 800 10 800 —
12 700 9 900 —
1.5
1.5
2.1
2.1
1
1
1.1
1.1
78 500 63 500
83 000 70 000
136 000 106 000
125 000 97 500
Duplex
0.341
0.338
0.625
7914 A5 DB DF DT
7914 C DB DF DT
7014 A DB DF DT
DB DF DT
DB DF DT
DB DF DT
76 000
124 000
112 000
1.5 1.08
1.5 1.24
2
2.6
*7214 BEA
7214 C DB DF DT
7314 A DB DF DT
138
138
2
2
2.65
2.53
81
81
82
99
99
108
1
1
1
0.355
0.357
0.661
22.7
42.1
55.5
82
84
84
108
121
121
1
0.748
1.5 1.19
1.5 1.22
4 300 6 300
8 000 11 000
3 800 5 000
3 400 4 800
55.5
26.2
52.4
67.8
84
84
87
87
121
121
148
148
1.5
1.5
2
2
1.18
1.36
3.13
3.19
DB
a0
DF
Abutment and Fillet
Dimensions (mm)
db (3)
Db
rb (3)
min.
max.
max.
—
—
75
95
95
105
0.6
0.6
0.6
86 000
127 000
116 000
7 750 8 750
12 600 13 000
11 500 11 800
7 100 10 000
4 500 6 300
3 200 4 500
44.1
80.3
105.8
4.1
32.3
57.8
—
76
76
105
119
119
0.6
1
1
—
129 000
203 000
—
129 000
187 000
—
—
13 200 13 200
20 700 19 100
3 600
6 700
3 200
5 300
9 000
4 300
105.8
50.1
98.5
57.8
2.1
28.5
76
—
77
119
119
143
1
1
1
7314 B DB DF DT
*7314 BEA
186 000
—
172 000
—
19 000 17 500
—
—
2 800
3 200
4 000
4 800
127.3
127.3
57.3
57.3
77
77
143
143
1
1
7915 A5 DB DF DT
7915 C DB DF DT
7015 A DB DF DT
44 000
46 500
73 000
55 500
58 500
87 500
6 000 8 500
7 100 10 000
4 800 6 700
58.0
40.1
74.8
26.0
8.1
34.8
—
—
80
100
100
110
0.6
0.6
0.6
DB DF DT
DB DF DT
DB DF DT
78 000
123 000
112 000
91 500
129 000
117 000
7 950 9 300
12 600 13 100
11 400 11 900
6 700
4 300
3 200
9 500
6 000
4 300
45.4
84.2
111.0
5.4
34.2
61.0
—
81
81
110
124
124
0.6
1
1
BEA
C DB DF DT
A DB DF DT
B DB DF DT
—
134 000
221 000
202 000
—
140 000
212 000
195 000
—
—
13 700 14 200
22 500 21 600
20 600 19 800
3
6
3
2
5
9
4
3
000
000
000
800
111.0
52.4
104.8
135.6
61.0
2.4
30.8
61.6
81
—
82
82
124
124
153
153
1
1
1
1
44 500
47 000
89 500
58 000
61 500
106 000
4 550 5 900
4 800 6 250
9 150 10 800
5 600
6 700
4 300
8 000
9 500
6 000
60.3
41.5
81.2
28.3
9.5
37.2
—
—
85
105
105
120
0.6
0.6
0.6
DB DF DT
DB DF DT
DB DF DT
95 500
145 000
131 000
111 000
152 000
139 000
9 700 11 300
14 700 15 600
13 300 14 100
6 300
4 000
2 800
9 000
5 600
4 000
49.4
89.5
118.3
5.4
37.5
66.3
—
86
86
120
134
134
0.6
1
1
BEA
C DB DF DT
A DB DF DT
B DB DF DT
—
151 000
239 000
219 000
—
155 000
238 000
218 000
—
—
15 400 15 800
24 400 24 200
22 400 22 300
3
6
2
2
4
8
3
3
118.3
55.5
111.2
143.9
66.3
3.5
33.2
65.9
82
—
87
87
153
134
163
163
1
1
1
1
7014 C
7214 A
7214 B
7015 C
7215 A
7215 B
*7215
7215
7315
7315
7 100 10 000
8 500 12 000
5 600 7 500
30.2
20.7
40.6
86
86
87
104
104
118
1
1
1
0.38
0.376
0.88
7916 A5 DB DF DT
7916 C DB DF DT
7016 A DB DF DT
125
140
140
22 1.1 0.6
26 2 1
26 2 1
58 500
89 000
80 500
55 500
76 000
69 500
6 000
9 100
8 200
5 650 15.7
7 750 —
7 050 —
8 000 11 000
5 000 7 100
3 600 5 000
24.7
44.8
59.1
87
90
90
118
130
130
1
2
2
0.966
1.46
1.49
7016 C
7216 A
7216 B
140
140
170
170
26
26
39
39
8 950 7 150 —
9 450 7 900 14.7
15 000 12 100 —
13 800 11 100 —
4 000 6 000
7 500 10 000
3 600 4 800
3 200 4 300
59.2
27.7
55.6
71.9
87
90
92
92
148
130
158
158
2
2
2
2
1.42
1.63
3.71
3.79
*7216
7216
7316
7316
4 400
4 650
7 300
F r >0.5F r +Y 0 F a
use P0=Fr
23.6
6.8
32.0
2 960 —
3 150 16.7
5 400 —
B046-075E.indd 60-61
C 0r
(min –1)
Grease
Oil
Single or DT
mounting
When
55.6
38.8
72.0
2 790
2 960
5 650
B 60
Y0
0.92
0.76
0.66
0.52
6 300 9 000
7 500 11 000
5 000 6 700
29 000
30 500
53 000
Notes (1) For applications operating near the limiting speed, refer to Page B49.
(2) The suffixes A, A5, B, and C represent contact angles of 30°, 25°, 40°, and 15° respectively.
Cr
X0
1
1
1
1
5 350
5 650
8 450
27 300
29 000
55 000
87 500 70 000
93 000 77 500
147 000 119 000
135 000 109 000
C 0r
52 500
55 500
82 500
16 1 0.6
16 1 0.6
22 1.1 0.6
1
1
1.1
1.1
{kgf}
43 000
45 500
71 500
80 110
110
125
2
2
2.1
2.1
Cr
DB or DF
Y0
0.46
0.38
0.33
0.26
Limiting
Load Center
Speeds (1) (Matched) Spacings (mm)
Basic Load Ratings (Matched)
(N)
X0
0.5
0.5
0.5
0.5
max. approx.
70 100
100
110
—
—
Bearing Numbers (2)
P0=X 0Fr +Y 0Fa
Single, DT
4 450
4 750
7 450
5 650
5 950
8 900
600
300
000
800
200
000
800
600
800
000
800
400
Note (3) For bearings marked — in the column for db, db and rb for shafts are da (min.) and ra (max.) respectively.
Remarks The bearings denoted by an asterisk (*) are NSKHPS Angular contact ball bearings and the column of Duplex in Bearing
Numbers indicates the universal matching.
B 61
11/5/12 5:29:19 PM
ANGULAR CONTACT BALL BEARINGS
Dynamic Equivalent Load P = X Fr +Y Fa
SINGLE/MATCHED MOUNTINGS
Bore Diameter 85 – 100 mm
B
2B
r
Contact i f0 Fa*
Angle Cor
2B
2B
r1
jD
jd
jDa
a0
jd a
jd b
jd a jDa
jD b
15º
25º
30º
40º
—
—
—
rb
ra
ra
r
0.178
0.357
0.714
1.07
1.43
2.14
3.57
5.35
ra
rb
ra
r1
a0
e
0.38
0.40
0.43
0.46
0.47
0.50
0.55
0.56
0.68
0.80
1.14
Single, DT
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
0
0.44 1.47
1
0
0.44 1.40
1
0
0.44 1.30
1
0
0.44 1.23
1
0
0.44 1.19
1
0
0.44 1.12
1
0
0.44 1.02
1
0
0.44 1.00
1
0
0.41 0.87
1
0
0.39 0.76
1
0
0.35 0.57
DB or DF
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
1.65 0.72 2.39
1
1.57 0.72 2.28
1
1.46 0.72 2.11
1
1.38 0.72 2.00
1
1.34 0.72 1.93
1
1.26 0.72 1.82
1
1.14 0.72 1.66
1
1.12 0.72 1.63
1
0.92 0.67 1.41
1
0.78 0.63 1.24
1
0.55 0.57 0.93
* For i , use 2 for DB, DF and 1 for DT
Static Equivalent Load
Contact
Angle
15º
25º
30º
40º
a
Single
Back-to-Back
DB
Boundary Dimensions
Basic Load Ratings (Single)
(mm)
d
D
B
Face-to-Face
DF
(N)
r
r1
Cr
Factor
{kgf}
C 0r
Cr
C 0r
f0
Tandem
DT
Limiting
Speeds (1)
(min –1)
Grease
Oil
Eff.Load Abutment and Fillet Mass
(kg)
Centers Dimensions (mm)
(mm)
da
Da
min.
max.
a
min. min.
ra
Bearing Numbers (2)
Single
Duplex
18 1.1 0.6
18 1.1 0.6
22 1.1 0.6
36 500
39 000
56 500
38 500
40 500
56 000
3 750
3 950
5 750
3 900 —
4 150 16.5
5 700 —
6 700 9 000
8 000 11 000
5 300 7 100
32.9
22.7
42.0
92
92
92
113
113
123
1
1
1
0.541
0.534
0.913
7917 A5 DB DF DT
7917 C DB DF DT
7017 A DB DF DT
130
150
150
22 1.1 0.6
28 2 1
28 2 1
60 000
103 000
93 000
58 500
89 000
81 000
6 150
10 500
9 500
6 000 15.9
9 100 —
8 250 —
7 500 10 000
4 800 6 700
3 400 4 800
25.4
47.9
63.3
92
95
95
123
140
140
1
2
2
1.01
1.83
1.87
7017 C
7217 A
7217 B
150
180
180
28 2
41 3
41 3
107 000 90 500
159 000 133 000
146 000 122 000
6 700
3 400
3 000
9 500
4 500
4 000
29.7
58.8
76.1
95
99
99
140
166
166
2
2.04
2.5 4.33
2.5 4.42
7217 C
7317 A
7317 B
6 300 8 500
7 500 10 000
4 800 6 700
34.1
23.4
45.2
97
97
99
118
118
131
90 125
125
140
18 1.1 0.6
18 1.1 0.6
24 1.5 1
39 500
41 500
67 500
43 500
46 000
66 500
10 900 9 250 14.7
16 200 13 500 —
14 800 12 400 —
4 000
4 250
6 850
4 450 —
4 700 16.6
6 750 —
{kgf}
C 0r
Cr
DB or DF
Y0
0.46
0.38
0.33
0.26
X0
1
1
1
1
Y0
0.92
0.76
0.66
0.52
C 0r
(min –1)
Grease
Oil
DB
a0
DF
max. approx.
85 120
120
130
1
1.1
1.1
Cr
X0
0.5
0.5
0.5
0.5
Limiting
Load Center
Speeds (1) (Matched) Spacings (mm)
Basic Load Ratings (Matched)
(N)
P0=X 0Fr +Y 0Fa
Single, DT
Single or DT
mounting
When
F r >0.5F r +Y 0 F a
use P0=Fr
Abutment and Fillet
Dimensions (mm)
db (3)
Db
rb (3)
min.
max.
max.
59 500
63 000
91 500
77 000
81 500
112 000
6 100 7 850
6 450 8 300
9 350 11 400
5 300
6 300
4 300
7 500
9 000
5 600
65.8
45.5
84.1
29.8
9.5
40.1
—
—
90
115
115
125
0.6
0.6
0.6
DB DF DT
DB DF DT
DB DF DT
98 000
167 000
151 000
117 000
178 000
162 000
9 950 12 000
17 100 18 200
15 400 16 500
6 000
3 800
2 800
8 500
5 300
3 800
50.8
95.8
126.6
6.8
39.8
70.6
—
91
91
125
144
144
0.6
1
1
DB DF DT
DB DF DT
DB DF DT
174 000
258 000
236 000
181 000
265 000
244 000
17 800 18 500
26 300 27 000
24 100 24 800
5 600
2 600
2 400
7 500
3 600
3 200
59.5
117.5
152.2
3.5
35.5
70.2
—
92
92
144
173
173
1
1
1
1
0.56
1
0.563
1.5 1.19
7918 A5 DB DF DT
7918 C DB DF DT
7018 A DB DF DT
64 000
67 500
109 000
87 000
92 000
133 000
6 500 8 900
6 900 9 400
11 200 13 500
5 000
6 000
3 800
7 100
8 500
5 300
68.1
46.8
90.4
32.1
10.8
42.4
—
—
96
120
120
134
0.6
0.6
1
140
160
160
24 1.5 1
30 2 1
30 2 1
71 500 69 000
118 000 103 000
107 000 94 000
7 300 7 050 15.7
12 000 10 500 —
10 900 9 550 —
7 100
4 500
3 200
9 500
6 000
4 300
27.4 99
51.1 100
67.4 100
131
150
150
1.5 1.34
2
2.25
2
2.29
7018 C
7218 A
7218 B
DB DF DT
DB DF DT
DB DF DT
116 000
191 000
173 000
138 000
206 000
188 000
11 900 14 100
19 500 21 000
17 700 19 100
5 600
3 600
2 600
8 000
5 000
3 400
54.8
102.2
134.9
6.8
42.2
74.9
—
96
96
134
154
154
1
1
1
160
190
190
30 2
43 3
43 3
123 000 105 000
171 000 147 000
156 000 135 000
12 500 10 700 14.6
17 400 15 000 —
15 900 13 800 —
6 300
3 200
2 800
9 000
4 300
3 800
31.7 100
61.9 104
80.2 104
150
176
176
2
2.51
2.5 5.06
2.5 5.17
7218 C
7318 A
7318 B
DB DF DT
DB DF DT
DB DF DT
199 000
277 000
254 000
209 000
294 000
270 000
20 300 21 400
28 300 30 000
25 900 27 600
5 300
2 600
2 200
7 100
3 400
3 000
63.5
123.8
160.5
3.5
37.8
74.5
—
97
97
154
183
183
1
1
1
6 000 8 500
7 100 10 000
4 500 6 300
35.2 102
24.1 102
46.6 104
123
123
136
1
0.597
1
0.591
1.5 1.43
7919 A5 DB DF DT
7919 C DB DF DT
7019 A DB DF DT
64 500
68 500
109 000
91 000
96 000
134 000
6 600 9 250
7 000 9 800
11 100 13 600
4 800
5 600
3 800
6 700
8 000
5 000
70.5
48.1
93.3
34.5
12.1
45.3
—
—
—
125
125
139
0.6
0.6
1
1
1.1
1.1
95 130
130
145
18 1.1 0.6
18 1.1 0.6
24 1.5 1
40 000
42 500
67 000
145
170
170
24 1.5 1
32 2.1 1.1
32 2.1 1.1
73 500 73 000
128 000 111 000
116 000 101 000
7 500 7 450 15.9
13 000 11 300 —
11 800 10 300 —
6 700
4 300
3 000
9 000
5 600
4 000
28.1 104
54.2 107
71.6 107
136
158
158
1.5 1.42
2
2.68
2
2.74
7019 C
7219 A
7219 B
DB DF DT
DB DF DT
DB DF DT
119 000
208 000
188 000
146 000
221 000
202 000
12 200 14 900
21 200 22 600
19 200 20 500
5 300
3 400
2 400
7 500
4 500
3 200
56.1
108.5
143.2
8.1
44.5
79.2
—
102
102
139
163
163
1
1
1
170
200
200
32 2.1 1.1
45 3 1.1
45 3 1.1
133 000 112 000
183 000 162 000
167 000 149 000
13 500 11 400 14.6
18 600 16 600 —
17 100 15 200 —
6 000
3 000
2 600
8 500
4 000
3 600
33.7 107
65.1 109
84.3 109
158
186
186
2
3.05
2.5 5.83
2.5 5.98
7219 C
7319 A
7319 B
DB DF DT
DB DF DT
DB DF DT
216 000
297 000
272 000
224 000
325 000
298 000
22 000 22 800
30 500 33 000
27 700 30 500
4 800
2 400
2 200
6 700
3 200
3 000
67.5
130.2
168.7
3.5
40.2
78.7
—
102
102
163
193
193
1
1
1
100 140
140
150
20 1.1 0.6
20 1.1 0.6
24 1.5 1
5 600
6 700
4 500
8 000
9 000
6 000
38.0 107
26.1 107
48.1 109
133
133
141
1
0.804
1
0.794
1.5 1.48
7920 A5 DB DF DT
7920 C DB DF DT
7020 A DB DF DT
77 000
81 500
111 000
103 000
108 000
141 000
7 850 10 500
8 300 11 100
11 300 14 400
4 500
5 300
3 600
6 300
7 500
5 000
76.0
52.2
96.2
36.0
12.2
48.2
—
—
—
135
135
144
0.6
0.6
1
47 500
50 000
68 500
45 500
48 000
67 000
51 500
54 000
70 500
4 050
4 300
6 800
4 850
5 100
6 950
4 650 —
4 900 16.7
6 800 —
5 250 —
5 550 16.5
7 200 —
Notes (1) For applications operating near the limiting speed, refer to Page B49.
(2) The suffixes A, A5, B, and C represent contact angles of 30°, 25°, 40°, and 15° respectively.
B 62
B046-075E.indd 62-63
Note
(3)
For bearings marked — in the column for db, db and rb for shafts are da (min.) and ra (max.) respectively.
B 63
11/5/12 5:29:20 PM
ANGULAR CONTACT BALL BEARINGS
Dynamic Equivalent Load P = X Fr +Y Fa
SINGLE/MATCHED MOUNTINGS
Bore Diameter 100 – 120 mm
B
2B
r
Contact i f0 Fa*
Angle Cor
2B
2B
r1
jD
jd
jDa
a0
jd a
jd b
jd a jDa
jD b
15º
25º
30º
40º
—
—
—
rb
ra
ra
r
0.178
0.357
0.714
1.07
1.43
2.14
3.57
5.35
ra
rb
ra
r1
a0
Single, DT
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
0
0.44 1.47
1
0
0.44 1.40
1
0
0.44 1.30
1
0
0.44 1.23
1
0
0.44 1.19
1
0
0.44 1.12
1
0
0.44 1.02
1
0
0.44 1.00
1
0
0.41 0.87
1
0
0.39 0.76
1
0
0.35 0.57
e
0.38
0.40
0.43
0.46
0.47
0.50
0.55
0.56
0.68
0.80
1.14
DB or DF
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
1.65 0.72 2.39
1
1.57 0.72 2.28
1
1.46 0.72 2.11
1
1.38 0.72 2.00
1
1.34 0.72 1.93
1
1.26 0.72 1.82
1
1.14 0.72 1.66
1
1.12 0.72 1.63
1
0.92 0.67 1.41
1
0.78 0.63 1.24
1
0.55 0.57 0.93
* For i , use 2 for DB, DF and 1 for DT
Static Equivalent Load
Contact
Angle
15º
25º
30º
40º
a
Single
Back-to-Back
DB
Boundary Dimensions
Basic Load Ratings (Single)
(mm)
d
D
B
Face-to-Face
DF
(N)
r
r1
Cr
Factor
{kgf}
C 0r
Cr
C 0r
f0
Tandem
DT
Limiting
Speeds (1)
(min –1)
Grease
Oil
Eff.Load Abutment and Fillet Mass
(kg)
Centers Dimensions (mm)
(mm)
da
Da
min.
max.
max. approx.
a
min. min.
ra
Bearing Numbers (2)
Single
Duplex
Cr
{kgf}
C 0r
Cr
X0
0.5
0.5
0.5
0.5
DB or DF
Y0
0.46
0.38
0.33
0.26
X0
1
1
1
1
Y0
0.92
0.76
0.66
0.52
Limiting
Load Center
Speeds (1) (Matched) Spacings (mm)
Basic Load Ratings (Matched)
(N)
P0=X 0Fr +Y 0Fa
Single, DT
C 0r
(min –1)
Grease
Oil
DB
a0
DF
Single or DT
mounting
When
F r >0.5F r +Y 0 F a
use P0=Fr
Abutment and Fillet
Dimensions (mm)
db (3)
Db
rb (3)
min.
max.
max.
100 150
180
180
24 1.5 1
34 2.1 1.1
34 2.1 1.1
75 500 77 000
144 000 126 000
130 000 114 000
7 700 7 900 16.0
14 700 12 800 —
13 300 11 700 —
6 300
4 000
2 800
9 000
5 300
3 800
28.7 109
57.4 112
75.7 112
141
168
168
1.5 1.46
2
3.22
2
3.28
7020 C
7220 A
7220 B
DB DF DT
DB DF DT
DB DF DT
122 000
233 000
212 000
154 000
251 000
229 000
12 500 15 800
23 800 25 600
21 600 23 300
5 300
3 200
2 200
7 100
4 300
3 000
57.5
114.8
151.5
9.5
46.8
83.5
—
107
107
144
173
173
1
1
1
180
215
215
34 2.1 1.1
47 3 1.1
47 3 1.1
149 000 127 000
207 000 193 000
190 000 178 000
15 200 12 900 14.5
21 100 19 700 —
19 400 18 100 —
5 600
2 800
2 400
8 000
3 800
3 400
35.7 112
69.0 114
89.6 114
168
201
201
2
3.65
2.5 7.29
2.5 7.43
7220 C
7320 A
7320 B
DB DF DT
DB DF DT
DB DF DT
242 000
335 000
310 000
254 000
385 000
355 000
24 700 25 900
34 500 39 500
31 500 36 000
4 500
2 200
2 000
6 300
3 000
2 800
71.5
137.9
179.2
3.5
43.9
85.2
—
107
107
173
208
208
1
1
1
105 145
145
160
20 1.1 0.6
20 1.1 0.6
26 2 1
5 500 —
5 800 16.6
8 350 —
5 600
6 300
4 300
7 500
9 000
5 600
39.2 112
26.7 112
51.2 115
138
138
150
1
1
2
0.82
0.826
1.84
7921 A5 DB DF DT
7921 C DB DF DT
7021 A DB DF DT
78 500
83 000
130 000
108 000
114 000
163 000
8 000 11 000
8 450 11 600
13 300 16 700
4 300
5 300
3 400
6 000
7 100
4 500
78.3
53.5
102.5
38.3
13.5
50.5
—
—
—
140
140
154
0.6
0.6
1
160
190
190
26 2 1
36 2.1 1.1
36 2.1 1.1
88 000 89 500
157 000 142 000
142 000 129 000
9 000 9 100 15.9
16 000 14 400 —
14 500 13 100 —
6 000
3 800
2 600
8 500
5 000
3 600
30.7 115
60.6 117
79.9 117
150
178
178
2
2
2
1.82
3.84
3.92
7021 C
7221 A
7221 B
DB DF DT
DB DF DT
DB DF DT
143 000
254 000
231 000
179 000
283 000
258 000
14 600 18 200
25 900 28 900
23 500 26 300
4 800
3 000
2 200
6 700
4 000
3 000
61.5
121.2
159.8
9.5
49.2
87.8
—
112
112
154
183
183
1
1
1
190
225
225
36 2.1 1.1
49 3 1.1
49 3 1.1
162 000 143 000
208 000 193 000
191 000 177 000
16 600 14 600 14.5
21 200 19 700 —
19 400 18 100 —
5 300
2 600
2 400
7 500
3 600
3 200
37.7 117
72.1 119
93.7 119
178
211
211
2
4.33
2.5 9.34
2.5 9.43
7221 C
7321 A
7321 B
DB DF DT
DB DF DT
DB DF DT
264 000
335 000
310 000
286 000
385 000
355 000
26 900 29 100
34 500 39 500
31 500 36 000
4 300
2 200
1 900
6 000
2 800
2 600
75.5
144.3
187.4
3.5
46.3
89.4
—
—
—
183
218
218
1
1
1
110 150
150
170
20 1.1 0.6
20 1.1 0.6
28 2 1
5 750 —
6 050 16.7
9 700 —
5 300
6 300
4 000
7 100
8 500
5 300
40.3 117
27.4 117
54.4 120
143
143
160
1
1
2
0.877
0.867
2.28
7922 A5 DB DF DT
7922 C DB DF DT
7022 A DB DF DT
79 500
84 500
157 000
112 000
119 000
191 000
8 100 11 500
8 600 12 100
16 000 19 400
4 300
5 000
3 200
5 600
6 700
4 300
80.6
54.8
108.8
40.6
14.8
52.8
—
—
—
145
145
164
0.6
0.6
1
170
200
200
28 2 1
38 2.1 1.1
38 2.1 1.1
106 000 104 000
170 000 158 000
154 000 144 000
10 800 10 600 15.6
17 300 16 100 —
15 700 14 700 —
5 600
3 600
2 600
8 000
4 800
3 400
32.7 120
63.7 122
84.0 122
160
188
188
2
2
2
2.26
4.49
4.58
7022 C
7222 A
7222 B
DB DF DT
DB DF DT
DB DF DT
172 000
276 000
250 000
208 000
315 000
289 000
17 600 21 200
28 100 32 500
25 500 29 400
4 500
2 800
2 000
6 300
4 000
2 800
65.5
127.5
168.1
9.5
51.5
92.1
—
117
117
164
193
193
1
1
1
200
240
240
38 2.1 1.1
50 3 1.1
50 3 1.1
176 000 160 000
220 000 215 000
201 000 197 000
17 900 16 300 14.5
22 500 21 900 —
20 500 20 100 —
5 000
2 600
2 200
7 100
3 400
3 000
39.8 122
75.5 124
98.4 124
188
226
226
2
5.1
2.5 11.1
2.5 11.2
7222 C
7322 A
7322 B
DB DF DT
DB DF DT
DB DF DT
286 000
360 000
325 000
320 000
430 000
395 000
29 200 32 500
36 500 44 000
33 500 40 000
4 000
2 000
1 800
5 600
2 600
2 400
79.5
151.0
196.8
3.5
51.0
96.8
—
—
—
193
233
233
1
1
1
120 165
165
180
22 1.1 0.6
22 1.1 0.6
28 2 1
67 500 77 000
72 000 81 000
102 000 107 000
6 900 7 850 —
7 300 8 300 16.5
10 400 10 900 —
4 800
5 600
3 600
6 300
7 500
5 000
44.2 127
30.1 127
57.3 130
158
158
170
1
1
2
7924 A5 DB DF DT
7924 C DB DF DT
7024 A DB DF DT
110 000
117 000
166 000
154 000
162 000
213 000
11 200 15 700
11 900 16 600
16 900 21 700
3 800
4 500
3 000
5 300
6 300
4 000
88.5
60.2
114.6
44.5
16.2
58.6
—
—
—
160
160
174
0.6
0.6
1
40
40
55
55
183 000
165 000
246 000
225 000
18 600
16 900
25 100
23 000
3 200
2 400
2 200
2 000
4 500 68.3
3 200 90.3
3 000 82.3
2 800 107.2
203
203
246
246
2
2
2.5
2.5
7224
7224
7324
7324
297
269
400
365
355
325
505
460
30 500
27 400
41 000
37 500
2
1
1
1
3
2
2
2
136.7
180.5
164.7
214.4
56.7
100.5
54.7
104.4
—
—
—
—
208
208
253
253
1
1
1
1
215
215
260
260
2.1
2.1
3
3
1.1
1.1
1.1
1.1
48 000
51 000
80 000
49 000
52 000
96 500
54 000
57 000
81 500
56 000
59 500
95 500
177 000
162 000
252 000
231 000
4 900
5 200
8 150
5 000
5 300
9 850
18 100
16 500
25 700
23 600
—
—
—
—
132
132
134
134
Notes (1) For applications operating near the limiting speed, refer to Page B49.
(2) The suffixes A, A5, B, and C represent contact angles of 30°, 25°, 40°, and 15° respectively.
B 64
B046-075E.indd 64-65
1.15
1.15
2.45
6.22
6.26
14.5
14.4
A
B
A
B
DB
DB
DB
DB
DF
DF
DF
DF
DT
DT
DT
DT
000
000
000
000
000
000
000
000
Note
(3)
For bearings marked — in the column for db, db and rb for shafts are da (min.) and ra (max.) respectively.
36 000
33 000
51 500
47 000
600
900
800
600
600
600
400
200
B 65
11/5/12 5:29:21 PM
ANGULAR CONTACT BALL BEARINGS
Dynamic Equivalent Load P = X Fr +Y Fa
SINGLE/MATCHED MOUNTINGS
Bore Diameter 130 – 170 mm
B
2B
2B
r
Contact i f0 Fa*
Angle Cor
2B
r1
r
ra
ra
r
jD
jd
jDa
a0
jda
jd b
jd a jDa
jDb
25º
30º
40º
—
—
—
ra
ra
a0
15º
0.178
0.357
0.714
1.07
1.43
2.14
3.57
5.35
ra
rb
Single, DT
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
0
0.44 1.47
1
0
0.44 1.40
1
0
0.44 1.30
1
0
0.44 1.23
1
0
0.44 1.19
1
0
0.44 1.12
1
0
0.44 1.02
1
0
0.44 1.00
1
0
0.41 0.87
1
0
0.39 0.76
1
0
0.35 0.57
e
0.38
0.40
0.43
0.46
0.47
0.50
0.55
0.56
0.68
0.80
1.14
DB or DF
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
1.65 0.72 2.39
1
1.57 0.72 2.28
1
1.46 0.72 2.11
1
1.38 0.72 2.00
1
1.34 0.72 1.93
1
1.26 0.72 1.82
1
1.14 0.72 1.66
1
1.12 0.72 1.63
1
0.92 0.67 1.41
1
0.78 0.63 1.24
1
0.55 0.57 0.93
* For i , use 2 for DB, DF and 1 for DT
Static Equivalent Load
Contact
Angle
15º
25º
30º
40º
a
Single
Back-to-Back
DB
Boundary Dimensions
Basic Load Ratings (Single)
(mm)
d
D
B
Face-to-Face
DF
(N)
r
r1
Cr
Factor
{kgf}
C 0r
Cr
C 0r
f0
Tandem
DT
Limiting
Speeds (1)
(min –1)
Grease
Oil
Eff.Load Abutment and Fillet Mass
(kg)
Centers Dimensions (mm)
(mm)
130 180
180
200
230
230
280
280
140 190
190
210
250
250
300
300
150 210
210
225
270
270
320
320
160 220
240
290
290
340
340
170 230
260
310
310
360
360
24 1.5 1
24 1.5 1
33 2 1
74 000 86 000
78 500 91 000
117 000 125 000
7 550 8 750 —
8 000 9 250 16.5
12 000 12 800 —
4 300
5 000
3 400
6 000
7 100
4 500
40
40
58
58
189 000
171 000
273 000
250 000
19 300
17 400
27 900
25 500
2 400
2 200
2 200
1 900
3 200 72.0
3 000 95.5
2 800 88.2
2 600 115.0
3
3
4
4
1.1
1.1
1.5
1.5
193 000
175 000
293 000
268 000
19 600
17 800
29 800
27 400
—
—
—
—
da
Da
min.
max.
a
min. min.
48.1 139
32.8 139
64.1 140
ra
Bearing Numbers (2)
Single
Duplex
Cr
{kgf}
C 0r
Cr
X0
0.5
0.5
0.5
0.5
DB or DF
Y0
0.46
0.38
0.33
0.26
X0
1
1
1
1
Y0
0.92
0.76
0.66
0.52
Limiting
Load Center
Speeds (1) (Matched) Spacings (mm)
Basic Load Ratings (Matched)
(N)
P0=X 0Fr +Y 0Fa
Single, DT
C 0r
(min –1)
Grease
Oil
DB
a0
DF
max. approx.
171
171
190
1.5
1.5
2
144
144
148
148
216
216
262
262
1.54
1.5
3.68
Single or DT
mounting
When
F r >0.5F r +Y 0 F a
use P0=Fr
Abutment and Fillet
Dimensions (mm)
db (3)
Db
rb (3)
min.
max.
max.
7926 A5 DB DF DT
7926 C DB DF DT
7026 A DB DF DT
120 000
128 000
191 000
172 000
182 000
251 000
12 300 17 500
13 000 18 500
19 400 25 600
3 400
4 000
2 600
4 800
5 600
3 600
96.3
65.5
128.3
48.3
17.5
62.3
—
—
—
174
174
194
1
1
1
2.5 7.06
2.5 7.1
3
17.5
3
17.6
7226
7226
7326
7326
310
278
445
405
385
350
585
535
31 500
28 300
45 500
41 500
1
1
1
1
2
2
2
2
600
400
200
000
143.9
191.0
176.3
230.0
63.9
111.0
60.3
114.0
—
—
—
—
223
223
271
271
1
1
1.5
1.5
7928 A5 DB DF DT
7928 C DB DF DT
7028 A DB DF DT
122 000
129 000
194 000
180 000
191 000
265 000
12 400 18 400
13 200 19 400
19 800 27 000
3 200
3 800
2 600
4 500
5 300
3 400
100.9
68.2
134.0
52.9
20.2
68.0
—
—
—
184
184
204
1
1
1
355
320
490
445
470
425
670
615
36 000
32 500
50 000
45 500
1
1
1
1
2
2
2
1
400
200
000
900
154.6
205.6
189.0
246.6
70.6
121.6
65.0
122.6
—
—
—
—
243
243
291
291
1
1
1.5
1.5
A
B
A
B
DB
DB
DB
DB
DF
DF
DF
DF
DT
DT
DT
DT
000
000
000
000
000
000
000
000
39 500
35 500
59 500
54 500
900
700
700
500
24 1.5 1
24 1.5 1
33 2 1
75 000 90 000
79 500 95 500
120 000 133 000
7 650 9 200 —
8 100 9 700 16.7
12 200 13 500 —
4 000
4 800
3 200
5 600
6 700
4 300
50.5 149
34.1 149
67.0 150
181
181
200
1.5
1.5
2
42
42
62
62
218 000
197 000
300 000
275 000
22 300
20 100
30 500
28 100
2 200
2 000
2 000
1 700
3 000 77.3 154
2 800 102.8 154
2 600 94.5 158
2 400 123.3 158
236
236
282
282
2.5 8.92
2.5 8.94
3
21.4
3
21.6
7228
7228
7328
7328
7930 A5 DB DF DT
7930 C DB DF DT
7030 A DB DF DT
157 000
166 000
222 000
231 000
244 000
305 000
16 000 23 500
16 900 24 900
22 700 31 500
3 000
3 600
1 900
4 000
4 800
2 400
112.0
76.2
143.3
56.0
20.2
73.3
—
—
—
204
204
218
1
1
1
7230
7230
7330
7330
405
365
515
470
560
510
745
680
41 000
37 000
52 500
48 000
1
1
1
1
2
2
1
1
200
000
900
800
166.3
221.2
200.7
262.2
76.3
131.2
70.7
132.2
—
—
—
—
263
263
311
311
1
1
1.5
1.5
3
3
4
4
1.1
1.1
1.5
1.5
234 000
213 000
335 000
310 000
23 900
21 700
34 500
31 500
—
—
—
—
28 2 1
28 2 1
35 2.1 1.1
96 500 115 000
102 000 122 000
137 000 154 000
9 850 11 800 —
10 400 12 400 16.6
14 000 15 700 —
3 800
4 300
2 400
5 000
6 000
3 000
56.0 160
38.1 160
71.6 162
200
200
213
2
2
2
45
45
65
65
248 000
225 000
315 000
289 000
25 300
22 900
32 500
29 400
2 000
1 800
1 800
1 600
2 800 83.1 164
2 600 110.6 164
2 400 100.3 168
2 200 131.1 168
256
256
302
302
2.5
2.5
3
3
3
3
4
4
1.1
1.1
1.5
1.5
280 000
254 000
370 000
340 000
28 500
25 900
38 000
34 500
—
—
—
—
1.63
1.63
3.9
2.97
2.96
4.75
11.2
11.2
26
25.9
A
B
A
B
A
B
A
B
DB
DB
DB
DB
DB
DB
DB
DB
DF
DF
DF
DF
DF
DF
DF
DF
DT
DT
DT
DT
DT
DT
DT
DT
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
48 000
43 500
68 500
63 000
57 000
52 000
75 500
69 500
800
600
600
400
600
500
500
300
28 2 1
38 2.1 1.1
48 3 1.1
106 000 133 000
155 000 176 000
263 000 305 000
10 800 13 500 16.7
15 800 18 000 —
26 800 31 500 —
3 800
2 200
1 900
5 000
2 800
2 600
39.4 170
76.7 172
89.0 174
210
228
276
2
3.1
2
5.77
2.5 14.1
7932 C
7032 A
7232 A
DB DF DT
DB DF DT
DB DF DT
173 000
252 000
425 000
265 000
355 000
615 000
17 600 27 000
25 700 36 000
43 500 62 500
3 000
1 700
1 500
4 000
2 400
2 000
78.9
153.5
177.9
22.9
77.5
81.9
—
—
—
214
233
283
1
1
1
48 3
68 4
68 4
1.1
1.5
1.5
238 000 279 000
345 000 420 000
315 000 385 000
24 200 28 400
35 500 43 000
32 000 39 500
1 700
1 700
1 500
2 400 118.4 174
2 200 106.2 178
2 000 138.9 178
276
322
322
2.5 14.2
3
30.7
3
30.8
7232 B
7332 A
7332 B
DB DF DT
DB DF DT
DB DF DT
385 000
565 000
515 000
555 000
845 000
770 000
39 500 57 000
57 500 86 000
52 500 78 500
1 400
1 400
1 200
1 900
1 800
1 700
236.8
212.3
277.8
140.8
76.3
141.8
—
—
—
283
331
331
1
1.5
1.5
28 2 1
42 2.1 1.1
52 4 1.5
113 000 148 000
186 000 214 000
295 000 360 000
11 500 15 100 16.8
19 000 21 900 —
30 000 36 500 —
3 600
2 000
1 800
4 800
2 600
2 400
40.8 180
83.1 182
95.3 188
220
248
292
2
2
3
3.36
7.9
17.3
7934 C
7034 A
7234 A
DB DF DT
DB DF DT
DB DF DT
183 000
300 000
480 000
297 000
430 000
715 000
18 700 30 000
31 000 43 500
49 000 73 000
2 800
1 600
1 400
3 800
2 200
1 900
81.6
166.1
190.6
25.6
82.1
86.6
—
—
—
224
253
301
1
1
1.5
52 4
72 4
72 4
266 000 325 000
390 000 485 000
355 000 445 000
27 200 33 000
39 500 49 500
36 000 45 500
1 600
1 600
1 400
2 200 126.7 188
2 200 112.5 188
2 000 147.2 188
292
342
342
3
3
3
17.6
35.8
35.6
7234 B
7334 A
7334 B
DB DF DT
DB DF DT
DB DF DT
435 000
630 000
575 000
650 000
970 000
890 000
44 000 66 500
64 500 99 000
59 000 90 500
1 300
1 300
1 100
1 700
1 700
1 600
253.4
225.0
294.3
149.4
81.0
150.3
—
—
—
301
351
351
1.5
1.5
1.5
1.5
1.5
1.5
—
—
—
—
—
—
Notes (1) For applications operating near the limiting speed, refer to Page B49.
(2) The suffixes A, A5, B, and C represent contact angles of 30°, 25°, 40°, and 15° respectively.
B 66
B046-075E.indd 66-67
Note
(3)
For bearings marked — in the column for db, db and rb for shafts are da (min.) and ra (max.) respectively.
B 67
11/5/12 5:29:23 PM
ANGULAR CONTACT BALL BEARINGS
Dynamic Equivalent Load P = X Fr +Y Fa
SINGLE/MATCHED MOUNTINGS
Bore Diameter 180 – 200 mm
B
2B
2B
r
Contact i f0 Fa*
Angle Cor
2B
r1
r
ra
ra
r
jD
jd
jDa
a0
jda
jd b
jd a jDa
jDb
25º
30º
40º
—
—
—
ra
ra
a0
15º
0.178
0.357
0.714
1.07
1.43
2.14
3.57
5.35
ra
rb
e
0.38
0.40
0.43
0.46
0.47
0.50
0.55
0.56
0.68
0.80
1.14
Single, DT
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
0
0.44 1.47
1
0
0.44 1.40
1
0
0.44 1.30
1
0
0.44 1.23
1
0
0.44 1.19
1
0
0.44 1.12
1
0
0.44 1.02
1
0
0.44 1.00
1
0
0.41 0.87
1
0
0.39 0.76
1
0
0.35 0.57
DB or DF
Fa/Fr≤e
Fa/Fr>e
X
Y
X
Y
1
1.65 0.72 2.39
1
1.57 0.72 2.28
1
1.46 0.72 2.11
1
1.38 0.72 2.00
1
1.34 0.72 1.93
1
1.26 0.72 1.82
1
1.14 0.72 1.66
1
1.12 0.72 1.63
1
0.92 0.67 1.41
1
0.78 0.63 1.24
1
0.55 0.57 0.93
* For i , use 2 for DB, DF and 1 for DT
Static Equivalent Load
Contact
Angle
15º
25º
30º
40º
a
Single
Back-to-Back
DB
Boundary Dimensions
Basic Load Ratings (Single)
(mm)
d
D
B
(N)
r
r1
Face-to-Face
DF
Cr
Factor
{kgf}
C 0r
Cr
C 0r
f0
Tandem
DT
Limiting
Speeds (1)
(min –1)
Grease
Oil
min. min.
180 250
280
320
320
380
380
190 260
290
340
340
400
400
200 280
310
360
360
420
420
Eff.Load Abutment and Fillet Mass
(kg)
Centers Dimensions (mm)
(mm)
da
Da
min.
max.
a
ra
Bearing Numbers (2)
Single
Duplex
Cr
{kgf}
C 0r
Cr
X0
0.5
0.5
0.5
0.5
DB or DF
Y0
0.46
0.38
0.33
0.26
X0
1
1
1
1
Y0
0.92
0.76
0.66
0.52
Limiting
Load Center
Speeds (1) (Matched) Spacings (mm)
Basic Load Ratings (Matched)
(N)
P0=X 0Fr +Y 0Fa
Single, DT
C 0r
(min –1)
Grease
Oil
DB
a0
DF
max. approx.
Single or DT
mounting
When
F r >0.5F r +Y 0 F a
use P0=Fr
Abutment and Fillet
Dimensions (mm)
db (3)
Db
rb (3)
min.
max.
max.
33 2 1
46 2.1 1.1
52 4 1.5
145 000 184 000
207 000 252 000
305 000 385 000
14 800 18 800 16.6
21 100 25 700 —
31 000 39 000 —
3 200
1 900
1 700
4 500
2 400
2 200
45.3 190
89.4 192
98.2 198
240
268
302
2
2
3
4.9
10.5
18.1
7936 C
7036 A
7236 A
DB DF DT
DB DF DT
DB DF DT
236 000
335 000
495 000
370 000
505 000
770 000
24 000 37 500
34 500 51 500
50 500 78 500
2 600
1 500
1 400
3 600
2 000
1 800
90.6
178.8
196.3
24.6
86.8
92.3
—
—
—
244
273
311
1
1
1.5
52 4
75 4
75 4
1.5
1.5
1.5
276 000 350 000
410 000 535 000
375 000 490 000
28 100 35 500
41 500 54 500
38 000 50 000
1 500
1 500
1 300
2 000 130.9 198
2 000 118.3 198
1 800 155.0 198
302
362
362
3
3
3
18.4
42.1
42.6
7236 B
7336 A
7336 B
DB DF DT
DB DF DT
DB DF DT
450 000
700 000
665 000 1 070 000
605 000
975 000
45 500 71 000
68 000 109 000
62 000 99 500
1 200
1 200
1 100
1 700
1 600
1 500
261.8
236.6
309.9
157.8
86.6
159.9
—
—
—
311
371
371
1.5
1.5
1.5
33 2 1
46 2.1 1.1
55 4 1.5
147 000 192 000
224 000 280 000
315 000 410 000
15 000 19 600 16.7
22 800 28 600 —
32 000 42 000 —
3 000
1 800
1 600
4 300 46.6 200
2 400 92.3 202
2 200 104.0 208
250
278
322
2
2
3
4.98
11.3
22.4
7938 C
7038 A
7238 A
DB DF DT
DB DF DT
DB DF DT
239 000
365 000
510 000
385 000
560 000
825 000
24 400 39 000
37 000 57 000
52 000 84 000
2 400
1 400
1 300
3 400
1 900
1 700
93.3
184.6
208.0
27.3
92.6
98.0
—
—
—
254
283
331
1
1
1.5
55 4
78 5
78 5
1.5
2
2
284 000 375 000
450 000 600 000
410 000 550 000
28 900 38 000
46 000 61 000
42 000 56 000
1 400
1 400
1 300
2 000 138.7 208
1 900 124.2 212
1 700 162.8 212
322
378
378
3
4
4
22.5
47.5
47.2
7238 B
7338 A
7338 B
DB DF DT
DB DF DT
DB DF DT
460 000
750 000
730 000 1 200 000
670 000 1 100 000
47 000 76 000
74 500 122 000
68 000 112 000
1 100
1 100
1 000
1 600
1 500
1 400
277.3
248.3
325.5
167.3
92.3
169.5
—
—
—
331
390
390
1.5
2
2
38 2.1 1.1
51 2.1 1.1
58 4 1.5
189 000 244 000
240 000 310 000
335 000 450 000
19 300 24 900 16.5
24 500 31 500 —
34 500 46 000 —
2 800
1 700
1 500
4 000 51.2 212
2 200 99.1 212
2 000 109.8 218
268
298
342
2
2
3
6.85
13.7
26.5
7940 C
7040 A
7240 A
DB DF DT
DB DF DT
DB DF DT
305 000
390 000
550 000
490 000
620 000
900 000
31 500 50 000
40 000 63 500
56 000 92 000
2 200
1 300
1 200
3 200
1 800
1 600
102.3
198.2
219.6
26.3
96.2
103.6
—
—
—
273
303
351
1
1
1.5
58 4
80 5
80 5
305 000 410 000
475 000 660 000
430 000 600 000
31 000 41 500
48 500 67 000
44 000 61 500
1 300
1 300
1 200
1 800 146.5 218
1 800 129.5 222
1 600 170.1 222
342
398
398
3
4
4
26.6
54.4
55.3
7240 B
7340 A
7340 B
DB DF DT
DB DF DT
DB DF DT
495 000
815 000
770 000 1 320 000
700 000 1 200 000
50 500 83 000
78 500 134 000
71 500 123 000
1 100
1 100
950
1 500
1 400
1 300
292.9
259.0
340.1
176.9
99.0
180.1
—
—
—
351
410
410
1.5
2
2
1.5
2
2
—
—
—
—
—
—
—
—
—
Notes (1) For applications operating near the limiting speed, refer to Page B49.
(2) The suffixes A, A5, B, and C represent contact angles of 30°, 25°, 40°, and 15° respectively.
B 68
B046-075E.indd 68-69
Note
(3)
For bearings marked — in the column for db, db and rb for shafts are da (min.) and ra (max.) respectively.
B 69
11/5/12 5:29:24 PM
DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS
Bore Diameter
10 – 85 mm
B
ra
r
Dynamic Equivalent Load
P = X Fr +Y Fa
r
ra
jD
jd
jDa
jd a
Fa/ Fr≤e
Fa/ Fr>e
X
X
1
a0
Y
Y
e
0.92 0.67 1.41 0.68
Static Equivalent Load
P0 = Fr +0 . 7 6 Fa
Boundary Dimensions
d
D
Limiting Speeds
Basic Load Ratings
(mm)
(N)
B
r
Cr
{kgf}
C 0r
Cr
(min –1)
C 0r
Grease
Oil
Bearing
Numbers
Load Center
Spacings
(mm)
a0
min.
Abutment and Fillet
Dimensions (mm)
Mass
(kg)
da
Da
ra
min.
max.
max.
approx.
10
12
30
32
14.3
15.9
0.6
0.6
7 150
10 500
3 900
5 800
730
1 070
400
590
17 000
15 000
22 000
20 000
5200
5201
14.5
16.7
15
17
25
27
0.6
0.6
0.050
0.060
15
35
42
15.9
19
0.6
1
11 700
17 600
7 050
10 200
1 190
1 800
715
1 040
13 000
11 000
17 000
15 000
5202
5302
18.3
22.0
20
21
30
36
0.6
1
0.070
0.11
17
40
47
17.5
22.2
0.6
1
14 600
21 000
9 050
12 600
1 490
2 140
920
1 280
11 000
10 000
15 000
13 000
5203
5303
20.8
25.0
22
23
35
41
0.6
1
0.090
0.14
20
47
52
20.6
22.2
1
1.1
19 600
24 600
12 400
15 000
2 000
2 510
1 270
1 530
10 000
9 000
13 000
12 000
5204
5304
24.3
26.7
26
27
41
45
1
1
0.12
0.23
25
52
62
20.6
25.4
1
1.1
21 300
32 500
14 700
20 700
2 170
3 350
1 500
2 110
8 500
7 500
11 000
10 000
5205
5305
26.8
31.8
31
32
46
55
1
1
0.19
0.34
30
62
72
23.8
30.2
1
1.1
29 600
40 500
21 100
28 100
3 000
4 150
2 150
2 870
7 100
6 300
9 500
8 500
5206
5306
31.6
36.5
36
37
56
65
1
1
0.29
0.51
35
72
80
27
34.9
1.1
1.5
39 000
51 000
28 700
36 000
4 000
5 200
2 920
3 700
6 300
5 600
8 000
7 500
5207
5307
36.6
41.6
42
44
65
71
1
1.5
0.43
0.79
40
80
90
30.2
36.5
1.1
1.5
44 000
56 500
33 500
41 000
4 500
5 800
3 400
4 200
5 600
5 300
7 100
6 700
5208
5308
41.5
45.5
47
49
73
81
1
1.5
0.57
1.05
45
85
100
30.2
39.7
1.1
1.5
49 500
68 500
38 000
51 000
5 050
7 000
3 900
5 200
5 000
4 500
6 700
6 000
5209
5309
43.4
50.6
52
54
78
91
1
1.5
0.62
1.4
50
90
110
30.2
44.4
1.1
2
53 000
81 500
43 500
61 500
5 400
8 300
4 400
6 250
4 800
4 300
6 000
5 600
5210
5310
45.9
55.6
57
60
83
100
1
2
0.67
1.95
55
100
120
33.3
49.2
1.5
2
56 000
95 000
49 000
73 000
5 700
9 700
5 000
7 450
4 300
3 800
5 600
5 000
5211
5311
50.1
60.6
64
65
91
110
1.5
2
0.96
2.3
60
110
130
36.5
54
1.5
2.1
69 000
125 000
62 000
98 500
7 050 6 300
12 800 10 000
3 800
3 400
5 000
4 500
5212
5312
56.5
69.2
69
72
101
118
1.5
2
1.35
3.15
65
120
140
38.1
58.7
1.5
2.1
76 500
142 000
69 000
113 000
7 800 7 050
14 500 11 500
3 600
3 200
4 500
4 300
5213
5313
59.7
72.8
74
77
111
128
1.5
2
1.65
3.85
70
125
150
39.7
63.5
1.5
2.1
94 000
159 000
82 000
128 000
9 600 8 400
16 200 13 100
3 400
3 000
4 500
3 800
5214
5314
63.8
78.3
79
82
116
138
1.5
2
1.8
4.9
75
80
85
130
140
150
41.3
44.4
49.2
1.5
2
2
93 500
99 000
116 000
83 000
93 000
110 000
9 550 8 500
10 100 9 500
11 800 11 200
3 200
3 000
2 800
4 300
3 800
3 600
5215
5216
5217
66.1
69.6
75.3
84
90
95
121
130
140
1.5
2
2
1.9
2.5
3.4
B 70
B046-075E.indd 70-71
B 71
11/5/12 5:29:25 PM
FOUR-POINT CONTACT BALL BEARINGS
Bore Diameter
30 – 95 mm
B
ra
r
r
ra
Dynamic Equivalent Load
jD
jDa
jd
jd a
Pa =Fa
Static Equivalent Load
P0a = Fa
a0
Boundary Dimensions
Limiting Speeds
Basic Load Ratings
(mm)
(N)
{kgf}
(min –1)
Bearing
Numbers
Abutment and Fillet
Dimensions (mm)
Load Center
Spacings
(mm)
Mass
(kg)
da
Da
ra
min.
max.
max.
36
37
56
65
1
1
0.24
0.42
42
44
65
71
1
1.5
0.35
0.57
42.0
45.5
47
49
73
81
1
1.5
0.45
0.78
209
309
45.5
50.8
52
54
78
91
1
1.5
0.52
1.05
QJ
QJ
210
310
49.0
56.0
57
60
83
100
1
2
0.59
1.35
7 100
6 300
QJ
QJ
211
311
54.3
61.3
64
65
91
110
1.5
2
0.77
1.75
4 800
4 300
6 300
5 600
QJ
QJ
212
312
59.5
66.5
69
72
101
118
1.5
2
0.98
2.15
18 300
25 500
4 300
3 800
6 000
5 300
QJ
QJ
213
313
64.8
71.8
74
77
111
128
1.5
2
1.2
2.7
10 800
17 500
20 100
29 100
4 000
3 600
5 600
5 000
QJ
QJ
214
314
68.3
77.0
79
82
116
138
1.5
2
1.3
3.18
212 000
320 000
11 200
19 100
21 700
33 000
3 800
3 400
5 300
4 800
QJ
QJ
215
315
71.8
82.3
84
87
121
148
1.5
2
1.5
3.9
77 000
124 000
202 000
167 000
236 000
360 000
7 850
12 600
20 600
17 000
24 100
37 000
3 800
3 600
3 200
5 300
5 000
4 300
QJ 1016
QJ 216
QJ 316
71.8
77.0
87.5
87
90
92
118
130
158
1
2
2
1.05
1.85
4.6
1.1
2
3
79 000
143 000
218 000
176 000
276 000
405 000
8 050
14 600
22 300
18 000
28 200
41 000
3 800
3 400
3 000
5 000
4 800
4 000
QJ 1017
QJ 217
QJ 317
75.3
82.3
92.8
92
95
99
123
140
166
1
2
2.5
1.1
2.2
5.34
24
30
43
1.5
2
3
94 000
164 000
235 000
208 000
320 000
450 000
9 600
16 700
23 900
21 200
32 500
45 500
3 400
3 200
2 800
4 800
4 300
3 800
QJ 1018
QJ 218
QJ 318
80.5
87.5
98.0
99
100
104
131
150
176
1.5
2
2.5
1.45
2.75
6.4
24
32
45
1.5
2.1
3
96 500
177 000
251 000
220 000
340 000
495 000
9 800
18 000
25 600
22 500
35 000
50 500
3 400
3 000
2 600
4 500
4 000
3 600
QJ 1019
QJ 219
QJ 319
84.0
92.8
103.3
104
107
109
136
158
186
1.5
2
2.5
1.5
3.35
7.4
d
D
B
30
62
72
16
19
35
72
80
40
r
a0
Ca
C 0a
Ca
C 0a
Grease
Oil
1
1.1
31 000
46 000
45 000
63 000
3 150
4 700
4 600
6 450
8 500
8 000
12 000
11 000
QJ
QJ
206
306
32.2
35.7
17
21
1.1
1.5
41 000
55 000
61 500
80 000
4 200
5 600
6 250
8 150
7 500
7 100
10 000
9 500
QJ
QJ
207
307
37.5
40.3
80
90
18
23
1.1
1.5
49 000
67 000
77 500
100 000
5 000
6 850
7 900
10 200
6 700
6 300
9 000
8 500
QJ
QJ
208
308
45
85
100
19
25
1.1
1.5
55 000
87 500
88 500
133 000
5 600
8 900
9 000
13 500
6 300
5 600
8 500
7 500
QJ
QJ
50
90
110
20
27
1.1
2
57 000
102 000
97 000
159 000
5 850
10 400
9 900
16 200
5 600
5 000
8 000
6 700
55
100
120
21
29
1.5
2
71 000
118 000
122 000
187 000
7 200
12 000
12 500
19 100
5 300
4 500
60
110
130
22
31
1.5
2.1
85 500
135 000
150 000
217 000
8 750
13 800
15 300
22 200
65
120
140
23
33
1.5
2.1
97 500
153 000
179 000
250 000
9 950
15 600
70
125
150
24
35
1.5
2.1
106 000
172 000
197 000
285 000
75
130
160
25
37
1.5
2.1
110 000
187 000
80
125
140
170
22
26
39
1.1
2
2.1
85
130
150
180
22
28
41
90
140
160
190
95
145
170
200
min.
approx.
Remarks When using four-point contact ball bearings, please contact NSK.
B 72
B046-075E.indd 72-73
B 73
11/5/12 5:29:26 PM
FOUR-POINT CONTACT BALL BEARINGS
Bore Diameter
100 – 200 mm
B
ra
r
r
ra
Dynamic Equivalent Load
jD
jDa
jd
jd a
Pa =Fa
Static Equivalent Load
P0a = Fa
a0
Boundary Dimensions
d
D
Limiting Speeds
Basic Load Ratings
(mm)
(N)
B
r
Ca
{kgf}
C 0a
Ca
(min –1)
C 0a
Grease
Oil
Bearing
Numbers
(mm)
a0
min.
100
105
110
120
130
140
150
160
170
180
190
200
150
180
215
160
190
225
170
200
240
180
215
260
200
230
280
210
250
300
225
270
320
240
290
340
260
310
360
280
320
380
290
340
400
310
360
420
24
34
47
26
36
49
28
38
50
28
40
55
33
40
58
33
42
62
35
45
65
38
48
68
42
52
72
46
52
75
46
55
78
51
58
80
1.5
2.1
3
2
2.1
3
2
2.1
3
2
2.1
3
2
3
4
2
3
4
2.1
3
4
2.1
3
4
2.1
4
4
2.1
4
4
2.1
4
5
2.1
4
5
98
199
300
115
217
305
139
235
320
147
265
360
169
274
400
172
239
440
197
315
460
224
380
505
268
425
565
299
440
595
325
440
655
345
490
690
500
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
1
1
1
1
1
1
1
1
1
1
1
1
2
232
390
640
269
435
640
315
490
710
350
585
835
415
635
970
435
710
110
505
785
230
580
010
400
705
180
610
830
270
770
925
290
980
020
480
180
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
000
10 000
20 300
31 000
11 800
22 100
31 000
14 200
24 000
32 500
15 000
27 000
36 500
17 300
28 000
40 500
17 600
29 900
44 500
20 100
32 000
47 000
22 800
39 000
51 500
27 300
43 500
57 500
30 500
45 000
60 500
33 000
44 500
67 000
35 500
49 500
70 500
23 700
39 500
65 500
27 400
44 500
65 500
32 000
50 000
72 500
36 000
60 000
85 500
42 000
65 000
99 000
44 500
72 500
114 000
51 500
80 000
125 000
59 000
103 000
143 000
72 000
121 000
164 000
84 500
130 000
180 000
94 000
131 000
202 000
104 000
151 000
222 000
3
2
2
3
2
2
2
2
2
2
2
2
2
2
1
2
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
200
800
400
000
600
400
800
600
200
600
400
000
400
200
900
200
000
700
000
800
600
900
700
500
800
600
400
700
500
300
600
400
300
500
300
200
4
3
3
4
3
3
3
3
3
3
3
2
3
3
2
3
2
2
2
2
2
2
2
2
2
2
2
2
2
1
2
2
1
2
1
1
300
800
400
000
600
200
800
400
000
600
200
800
200
000
600
000
800
400
800
600
200
600
400
000
400
200
000
200
000
800
200
000
700
000
800
600
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
QJ
1020
220
320
1021
221
321
1022
222
322
1024
224
324
1026
226
326
1028
228
328
1030
230
330
1032
232
332
1034
234
334
1036
236
336
1038
238
338
1040
240
340
Abutment and Fillet
Dimensions (mm)
Load Center
Spacings
87.5
98.0
110.3
92.8
103.3
115.5
98.0
108.5
122.5
105.0
117.3
133.0
115.5
126.0
143.5
122.5
136.5
154.0
131.3
147.0
164.5
140.0
157.5
175.1
150.5
168.0
185.6
161.0
175.1
196.1
168.0
185.6
206.6
178.6
196.1
217.1
Mass
(kg)
da
Da
ra
min.
max.
max.
approx.
1.5
2
2.5
2
2
2.5
2
2
2.5
2
2
2.5
2
2.5
3
2
2.5
3
2
2.5
3
2
2.5
3
2
3
3
2
3
3
2
3
4
2
3
4
1.6
4.0
9.3
2.0
4.7
10.5
2.5
5.6
12.5
2.65
6.9
15.4
4.0
7.7
19
4.3
9.8
24
5.2
12
29
6.4
15
31
8.6
19.5
41
11
20.5
48
11.5
23
54.5
15
27
61.5
109
112
114
115
117
119
120
122
124
130
132
134
140
144
148
150
154
158
162
164
168
172
174
178
182
188
188
192
198
198
202
208
212
212
218
222
141
168
201
150
178
211
160
188
226
170
203
246
190
216
262
200
236
282
213
256
302
228
276
322
248
292
342
268
302
362
278
322
378
298
342
398
Remarks When using four-point contact ball bearings, please contact NSK.
B 74
B046-075E.indd 74-75
B 75
11/5/12 5:29:27 PM