Double Row, Angular Contact Ball Bearings
[From SKF Catalog (1991)]
bw
ra
da
©1998 McGraw-Hill
db
Db
Da
Hamrock, Jacobson and Schmid
Equivalent Bearing Load
The equivalent bearing dynamic load is given by
P=XFr + YFa
where
X and Y are radial and axial factors (given in chart)
Fr is the radial load
Fa is the axial load
The equivalent static load is given by
P0=XFr+Y0Fa
where
©1998 McGraw-Hill
Y0 is the static axial factor (given in chart)
Hamrock, Jacobson and Schmid
Double Row Angular Contact Ball Bearings
10-30 mm
Principal Dimensions
Basicloadratings
Alloaable
loadlimit
Speedratings
Abutmentaandfiletdimensions
Calculationfactors
Fa/FrŠe
db
mm
in
10
0.3937
12
0.4724
15
0.5906
20
0.7874
25
0.9843
30
1.1811
da
mm
in
30
1.1811
32
1.2598
35
1.3780
47
1.8504
52
2.0472
52
2.0472
62
2.4409
62
2.4409
72
2.8346
bw
mm
in
14.29
9/16
15.88
5/8
15.88
5/8
20.64
13/16
22.23
7/8
20.64
13/16
25.40
1
23.81
15/16
30.16
13/16
©1998 McGraw-Hill
C
N
lbf
7150
1610
10600
2390
11700
2630
19500
4390
22500
5060
21200
4770
30700
6910
29600
6660
41600
9360
C0
N
lbf
3900
877
5850
1320
6950
1560
12200
2740
14600
3280
14600
3280
20400
4590
21200
4770
29000
6520
wa
N
lbf
166
37
245
55
300
67
520
117
620
139
620
139
865
194
900
202
1220
274
grease
rpm
oil
rpm
16000
22000
15000
20000
12000
17000
9000
13000
8500
12000
8000
11000
7500
10000
7000
9500
6300
8500
Da,min
mm
in
14
0.551
16
0.630
19
0.748
25
0.984
27
1.063
31
1.220
32
1.260
36
1.417
37
1.457
Db,max
mm
in
25
0.984
27
1.063
31
1.220
42
1.654
47
1.850
47
1.850
57
2.244
57
2.244
66
2.598
ra,max
mm
in
0.6
0.024
0.6
0.024
0.6
0.024
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
1.0
0.039
Designation
e
X
Y
X
Fa/Fr>e
Y
static
Y0
0.66
1
0.95
0.67
1.45
0.78
5200A
0.66
1
0.95
0.67
1.45
0.78
5201A
0.66
1
0.95
0.67
1.45
0.78
5203A
0.68
1
0.92
0.67
1.44
0.76
5204A
0.80
1
0.78
0.63
1.24
0.66
5304A
0.68
1
0.92
0.67
1.44
0.76
5205A
0.80
1
0.78
0.63
1.24
0.66
5305A
0.68
1
0.92
0.67
1.44
0.76
5206A
0.80
1
0.78
0.63
1.24
0.66
5306A
Hamrock, Jacobson and Schmid
Double Row Angular Contact Ball Bearings
40-100 mm
PrincipalDimensions
Basicloadratings
Aloaable
loadlimit
Speedratings
Abutmentaandfiletdimensions
Calculationfactors
Fa/FrŠe
db
mm
in
40
1.5748
50
1.9685
60
2.3622
75
2.9528
100
3.9370
da
mm
in
80
3.1496
90
3.5433
90
3.5433
110
4.3307
110
4.3307
130
5.1181
130
5.1181
160
6.2992
180
7.0866
bw
mm
in
30.16
13/16
36.51
17/16
30.16
13/16
44.45
13/4
36.51
17/16
53.98
21/8
41.28
15/8
68.26
211/16
60.33
23/8
©1998 McGraw-Hill
C
N
lbf
44900
10100
60500
13600
48800
11000
85200
19200
70200
15800
121000
27200
95600
21500
168000
37800
186000
41800
C0
N
lbf
34000
7640
43000
9670
39000
8770
64000
14400
58500
13200
95000
21400
88000
19800
140000
31500
173000
38900
wa
N
lbf
1430
321
1830
411
1660
373
2700
607
2500
562
4000
899
3750
843
5500
1240
6200
1390
grease
rpm
oil
rpm
5600
7500
5000
6700
4800
6300
4000
5300
3800
5000
3400
4500
3200
4300
2600
3600
2000
3000
Da,min
mm
in
47
1.850
49
1.929
57
2.244
60
2.362
69
2.717
72
2.835
84
3.307
87
3.425
112
4.409
Db,max
mm
in
73
2.874
82
3.228
84
3.307
100
3.937
101
3.976
120
4.724
123
4.843
148
5.827
168
6.614
ra,max
mm
in
1.0
0.039
1.5
0.059
1.0
0.039
2.0
0.079
1.5
0.059
2.0
0.079
1.5
0.059
2.0
0.079
2.0
0.079
Designation
e
X
Y
X
Fa/Fr>e
Y
static
Y0
0.80
1
0.78
0.63
1.24
0.66
5208A
0.80
1
0.78
0.63
1.24
0.66
5308A
0.80
1
0.78
0.63
1.24
0.66
5210A
0.80
1
0.78
0.63
1.24
0.66
5310A
0.80
1
0.78
0.63
1.24
0.66
5212A
0.80
1
0.78
0.63
1.24
0.66
5312A
0.80
1
0.78
0.63
1.24
0.66
5215A
0.80
1
0.78
0.63
1.24
0.66
5315A
0.66
1
0.95
0.67
1.45
0.78
5220A
Hamrock, Jacobson and Schmid