● Miniature and Small Size Ball Bearings
Metric series
B
B
B1
B1
B1
C1
r
r
C2
r
r
φD
φd
φdφD1
φD
Open type
With single shield
(Z)
With double shield
(ZZ)
Open type
with flange
(FL)
φD2
With flanged outer ring
and single shield
(FL…Z)
d 1.5 〜 5mm
Boundary dimensions
mm
d
D
B
B1
D1
D2
C1
C2
rs min1）
Basic load ratings
Factor Limiting speeds
dynamic staticdynamic static
Nkgf
min-1
Cr
Cor
Cr
Cor
fo
greaseoil
4
1.2
25 50.4
0.6
0.15
102
29.0
10.03.00 13.6
52 2.66.5 6.50.60.80.15171 51.017.05.00 13.3
6 2.5 3
7.5
7.5 0.6 0.8 0.15 274
86.0 28.09.00 12.3
88 000
79 000
71 000
100 000
93 000
84 000
4 1.2 —
—
—
—
— 0.05104 37.0 11.04.00
51.52.36.1 6.10.50.60.08171 51.017.05.00
5 2
2.5 —
—
—
— 0.1 17151.017.05.00
6 2.3 3
7.5
7.5 0.6 0.8 0.15 279
89.0 28.09.00
6 2.5 —7.2
—0.6
— 0.15279 89.028.09.00
7 2.5 —
—
—
—
— 0.15 390120 40.012.0
72.83.58.5 8.50.70.90.15380125 39.013.0
14.8
13.3
13.3
12.8
12.8
11.9
12.4
83 000
74 000
74 000
67 000
67 000
59 000
62 000
98 000
87 000
87 000
79 000
79 000
70 000
73 000
2.5
5 1.5 2.3 —
15.0
—
—
— 0.08153 59.016.06.00
61.82.67.1 7.10.50.80.08209 73.021.07.50 14.2
7 —3—8.2
— 0.60.15 284 96.0 29.010.013.8
72.53.58.5 8.50.70.90.15284 96.029.010.0 13.8
8 2.5 2.8 9.2 —0.6
— 0.15 430152 44.016.0 13.2
8 2.8 4
9.5
9.5 0.7 0.9 0.15 550 174
56.018.0 11.5
70 000
65 000
59 000
59 000
56 000
56 000
82 000
76 000
70 000
70 000
66 000
66 000
3
62 2.57.2 7.20.60.60.08242 94.025.09.50 14.7
7 2
3
8.1
8.1 0.5 0.8 0.1
390 130
40.013.0 13.0
8 2.5 —9.2
—0.6
— 0.15 560180 57.018.011.9
8 3
4
9.5
9.5 0.7 0.9 0.15 560 180
57.018.011.9
9 2.5 4
10.2 10.6 0.6 0.8 0.15 635 219
65.022.012.4
9 3
5
10.5 10.5 0.7 1
0.15 635 219
65.022.012.4
10
4
4
11.5
11.5
1
1
0.15
640
224
65.023.0 12.7
60 000
58 000
54 000
54 000
50 000
50 000
50 000
71 000
68 000
63 000
63 000
59 000
59 000
58 000
4
72
8 2
9 2.5
10
3
11 4
12
4
13
5
16
5
2.58.2 8.20.60.60.08222 88.023.09.00
15.3
3
9.2
9.2 0.6 0.6 0.08 395 140
40.014.0 13.9
4
10.3 10.3 0.6 1
0.15 640 224
65.023.0 12.7
4
11.2
11.6
0.6
0.8 0.15
650
235
66.024.0 13.3
4
12.5 12.5
1
1
0.15
715
276
73.028.013.7
4
13.5
13.5
1
1
0.2
970
360
99.036.012.8
5
15
15
1
1
0.2 1 310
490
13450.0
12.4
5
0.3 1 760 680
17969.0 12.4
—
—
—
—
54 000
52 000
49 000
46 000
45 000
43 000
42 000
37 000
63 000
61 000
57 000
55 000
52 000
51 000
49 000
44 000
5
82 2.59.2 9.20.60.60.08217 91.022.09.50 15.8
9 2.5 3
10.2 10.2 0.6 0.6 0.15 500 211
51.021.0 14.6
10
3
4
11.2
11.6
0.6
0.8 0.15
715
276
73.028.0 13.7
49 000
46 000
45 000
57 000
55 000
52 000
1.5
2
1）Smallest allowable dimension for chamfer dimension r.
B-34
● Miniature and Small Size Ball Bearings
Dynamic equivalent radial load
Pr＝XFr＋YFa
Fa
Fa
fo・Fa
≦e
＞e
Fr
Fr
e
Cor
X Y X
Y
2.30
0.172 0.19
1.99
0.345 0.22
1.71
0.689 0.26
1.55
1.03 0.28
0 0.56 1.45
1.38 0.30 1
1.31
2.07 0.34
1.15
3.45 0.38
1.04
5.17 0.42
1.00
6.89 0.44
Static equivalent radial load
Por＝0.6Fr＋0.5Fa
B1
C2
ra
ra
ra
φD2
φda φda
φDa
With flanged outer ring
and double shield
(FL…ZZ)
When Por＜Fr use Por＝Fr
Bearing numbers
with single
with double unsealed type
open
shield
shield
with flange
Abutment and fillet dimensions Mass (approx.)
mmg
da
Da
ras
with flanged OR and with flanged OR and
unsealed type
max
single shield
double shield minmax2） max
open
with flange
68/1.5 W68/1.5SA
SSA FL68/1.5 FLW68/1.5SA
SSA 2.3 2.4 3.2 0.050.07 0.09
69/1.5A W69/1.5ASA SSA FL69/1.5A FLW69/1.5ASA SSA 2.7 2.9 3.8 0.150.18 0.24
60/1.5 W60/1.5ZA
ZZA FL60/1.5 FLW60/1.5ZA
ZZA 2.7 3.0 4.8 0.150.35 0.42
672
—
682
W682SA
BC2-5WBC2-5SA
692 W692SA
BC2-6 —
BC2-7A —
602
W602ZA
—
—
SSA FL682
SSA —
SSAFL692
FLBC2-6
—
—
—
ZZA FL602
—
FLW682SA
—
FLW692SA
—
—
FLW602ZA
—
SSA
—
SSA
—
—
ZZA
2.5
2.8
2.8
3.2
3.2
3.2
3.2
2.6 3.5
2.9 4.2
2.9 4.2
3.3 4.8
3.3 4.8
3.6 5.8
3.7 5.8
0.050.06 —
0.080.13 0.17
0.100.16 —
0.150.31 0.38
0.150.32 0.38
0.150.44 —
0.150.54 0.64
67/2.5W67/2.5ZA ZZA
—
68/2.5 W68/2.5ZA
ZZA FL68/2.5
— WBC2.5-7ZAZZA
—
69/2.5 W69/2.5SA SSAFL69/2.5
BC2.5-8WBC2.5-8ZA ZZA FLBC2.5-8
60/2.5 W60/2.5ZA
ZZA FL60/2.5
—
—
FLW68/2.5ZA
ZZA
FLWBC2.5-7ZAZZA
FLW69/2.5SA SSA
—
—
FLW60/2.5ZA
ZZA
3.1
3.1
3.7
3.7
3.7
3.7
3.3 4.4
3.6 4.8
4.0 5.8
4.0 5.8
4.3 6.8
4.1 6.8
0.080.11 —
0.080.22 0.26
0.150.63)0.673)
0.150.43 0.53
0.150.57 0.65
0.150.72 0.83
673
WA673SA
683
W683ZA
BC3-8 —
693
W693Z
BC3-9WBC3-9ZA
603
W603Z
623
623Z
SSA FL673
ZZA FL683
FLBC3-8
—
ZZ
FL693
ZZAFLBC3-9
ZZ
FL603
ZZ
FL623
FLWA673SA
SSA
FLW683ZA
ZZA
—
—
FLW693Z
ZZ
FLAWBC3-9ZAZZA
FLW603Z
ZZ
FL623Z
ZZ
3.6 4.1 5.4 0.080.2 0.26
3.94.15.80.10.330.38
4.2 4.4 6.8 0.150.52 0.6
4.2 4.4 6.8 0.150.61 0.72
4.2 5.0 7.8 0.150.71 0.79
4.2 5.0 7.8 0.150.92 1
4.2 5.2 8.8 0.151.6 1.8
674A WA674ASA
BC4-8 WBC4-8Z
684AX50W684AX50Z
BC4-10WBC4-10Z
694 694Z
604
604Z
624
624Z
634
634Z
SSA FL674A
ZZ
FLBC4-8
ZZ
FL684AX50
ZZ FLBC4-10
ZZFL694
ZZ
FL604
ZZ
FL624
ZZ
—
FLWA674ASA
FLWBC4-8Z
FLW684AX50Z
FLAWBC4-10Z
FL694Z
FL604Z
FL624Z
—
4.6 5.0 6.4 0.080.28 0.35
4.8 5.0 6.8 0.080.38 0.46
5.05.27.80.10.670.76
5.2 6.0 8.8 0.151
1.1
5.2 6.4 9.8 0.151.8 2
5.66.6
10.40.22.1 2.3
5.66.2
11.40.23.2 3.5
6
7.614
0.3 5.1 —
675
WA675Z
BC5-9 WBC5-9Z
BC5-10 WBC5-10Z
ZZ
ZZ
ZZ
SSA
ZZ
ZZ
ZZ
ZZ
ZZ
ZZ
—
FL675
FLWA675Z
ZZ
FLBC5-9 FLWBC5-9Z
ZZ
FLBC5-10 FLAWBC5-10Z ZZ
5.6 6.0 7.4 0.080.32 0.4
5.2 6.1 7.8 0.150.55 0.63
6.2 6.4 8.8 0.150.88 0.97
2）This dimension applies to sealed and shielded bearings. 3）Values for double shielded bearings shown.
B-35
● Miniature and Small Size Ball Bearings
B
B
B1
B1
B1
C1
r
r
C2
r
r
φD
φd
φdφD1
φD
Open type
With single shield
(Z)
With double shield
(ZZ)
Open type
with flange
(FL)
φD2
With flanged outer ring
and single shield
(FL…Z)
d 5 〜 9mm
Boundary dimensions
mm
d
D
B
B1
D1
D2
C1
C2
rs min1）
Basic load ratings
Factor Limiting speeds
dynamic staticdynamic static
Nkgf
min-1
Cr
Cor
Cr
Cor
fo
greaseoil
5
11 —4—12.6
— 0.80.15 715 282
11 3
5
12.5 12.5
0.8
1
0.15
715
282
13
4
4
15
15
1
1
0.2
1 080
430
13 —5—15—
1
0.2 1 080 430
14
5
5
16
16
1
1
0.2
1 330
505
16
5
5
18
18
1
1
0.3
1 760
680
19
6
6
0.3 2 340 885
—
—
—
—
73.029.0
73.029.0
11044.0
11044.0
13552.0
17969.0
23890.0
14.0
14.0
13.4
13.4
12.8
12.4
12.1
43 000
43 000
40 000
40 000
39 000
37 000
34 000
51 000
51 000
47 000
47 000
46 000
44 000
40 000
6
10
12
13
15
16
17
19
2.5
3
3.5
5
6
6
6
3
4
5
5
6
6
6
11.2
13.2
15
17
—
19
22
11.2
13.6
15
17
—
19
22
0.6
0.6
1.0
1.2
—
1.2
1.5
0.6
0.8
1.1
1.2
—
1.2
1.5
0.1
0.15
0.15
0.2
0.2
0.3
0.3
465
830
1 080
1 350
1 770
2 190
2 340
196
365
440
530
695
865
885
47.020.0
85.037.0
11045.0
13754.0
18171.0
22488.0
23890.0
15.2
14.5
13.7
13.3
12.7
12.3
12.1
43 000
40 000
39 000
37 000
36 000
35 000
34 000
51 000
47 000
46 000
44 000
42 000
42 000
40 000
7
11
13
14
17
19
22
2.5
3
3.5
5
6
7
3
4
5
5
6
7
12.2
14.2
16
19
—
—
12.2
14.6
16
19
—
—
0.6
0.6
1
1.2
—
—
0.6
0.8
1.1
1.2
—
—
0.1
0.15
0.15
0.3
0.3
0.3
555
269
825
375
1 170
505
1 610
715
2 240 910
3 350 1 400
56.027.0
84.038.0
12051.0
16473.0
22893.0
340142
15.6
14.9
14.0
14.0
12.9
12.5
40 000
38 000
37 000
35 000
34 000
32 000
47 000
45 000
44 000
41 000
40 000
37 000
8
12
14
16
19
22
24
2.5
3.5
4
6
7
8
3.5
4
5
6
7
8
13.2
15.6
18
22
25
—
13.6
15.6
18
22
25
—
0.6
0.8
1
1.5
1.5
—
0.8
0.8
1.1
1.5
1.5
—
0.1
0.15
0.2
0.3
0.3
0.3
515
252
820
385
1 610
715
1 990
865
3 350 1 400
4 000 1 590
52.026.0
84.039.0
16473.0
20288.0
340142
410162
15.9
15.2
14.0
13.8
12.5
11.7
38 000
36 000
35 000
33 000
32 000
31 000
45 000
43 000
41 000
39 000
37 000
36 000
9
14
17
20
24
26
3
4
6
7
8
4.5
5
6
7
8
—
19
—
—
—
—
19
—
—
—
—
1
—
—
—
—
1.1
—
—
—
0.1 920465
0.2
1 720
820
0.3 2 480 1 090
0.3 3 400 1 450
0.6 4 550 1 960
94.048.0
17683.0
253111
345148
465200
15.5
14.4
13.5
12.9
12.4
36 000
33 000
32 000
31 000
30 000
42 000
39 000
38 000
36 000
35 000
1）Smallest allowable dimension for chamfer dimension r.
B-36
● Miniature and Small Size Ball Bearings
Dynamic equivalent radial load
Pr＝XFr＋YFa
Fa
Fa
fo・Fa
≦e
＞e
Fr
Fr
e
Cor
X Y X
Y
2.30
0.172 0.19
1.99
0.345 0.22
1.71
0.689 0.26
1.55
1.03 0.28
0 0.56 1.45
1.38 0.30 1
1.31
2.07 0.34
1.15
3.45 0.38
1.04
5.17 0.42
1.00
6.89 0.44
Static equivalent radial load
Por＝0.6Fr＋0.5Fa
B1
C2
ra
ra
ra
φD2
φda φda
φDa
With flanged outer ring
and double shield
(FL…ZZ)
When Por＜Fr use Por＝Fr
Bearing numbers
with single
with double unsealed type
open
shield
shield
with flange
Abutment and fillet dimensions Mass (approx.)
mmg
da
Da
ras
with flanged OR and with flanged OR and
unsealed type
max
single shield
double shield minmax2） max
open
with flange
− WBC5-11ZZZ　—
685
W685Z
ZZ
FL685
695
695Z
ZZ
FL695
− WBC5-13ZZZ　—
605
605Z
ZZ
FL605
625
625Z
ZZ
FL625
635
635Z
ZZ
—
FLWBC5-11ZZZ
FLW685Z
ZZ
FL695Z
ZZ
FLWBC5-13ZZZ
FL605Z
ZZ
FL625Z
ZZ
—
—
22)
6.26.89.80.21.83)
6.2 6.8 9.8 0.151.1 1.3
6.66.9
11.40.22.4 2.7
6.66.9
11.40.23.43)3.73)
6.67.4
12.40.23.5 3.9
7
7.614
0.3 4.8 5.2
7
9.517
0.3 8
—
676A WA676AZ
BC6-12 WBC6-12Z
686
W686Z
696
696Z
BC6-16ABC6-16AZ
606
606Z
626
626Z
ZZ
ZZ
ZZ
ZZ
ZZ
ZZ
ZZ
FL676A
FLBC6-12
FL686
FL696
—
FL606
FL626
FLWA676AZ
FLAWBC6-12Z
FLW686Z
FL696Z
—
FL606Z
FL626Z
ZZ
ZZ
ZZ
ZZ
—
ZZ
ZZ
6.66.79.20.10.650.74
7.2 7.910.8 0.15 1.3 1.4
7.0 7.211.8 0.15 1.9 2.2
7.67.8
13.40.23.8 4.3
7.68.0
14.40.25.2 —
8
8.615
0.3 6
6.5
8
9.517
0.3 8.1 9.2
677
BC7-13
687A
697
607
627
WA677Z
WBC7-13Z
W687AZ
697Z
607Z
627Z
ZZ
ZZ
ZZ
ZZ
ZZ
ZZ
FL677
FLBC7-13
FL687A
FL697
—
—
FLWA677Z
FLAWBC7-13Z
FLW687AZ
FL697Z
—
—
ZZ
ZZ
ZZ
ZZ
—
—
7.88.1
10.20.10.670.77
8.2 8.911.8 0.15 1.4 1.5
8.2 8.712.8 0.15 2.1 2.4
9 10.015
0.3 5.2 5.7
9 10.417
0.3 8
—
9 12.220
0.3 13
—
678A
BC8-14
688A
698
608
628
W678AZ
WBC8-14Z
W688AZ
698Z
608Z
628Z
ZZ
ZZ
ZZ
ZZ
ZZ
ZZ
FL678A
FLBC8-14
FL688A
FL698
FL608
—
FLAW678AZ
FLWBC8-14Z
FLW688AZ
FL698Z
FL608Z
—
11.20.10.750.86
ZZ 8.89.1
9.2 9.512.8 0.15 1.8 1.9
ZZ
10.0
14.40.23.1 3.5
ZZ 9.6
10 10.617
0.3 7.3 8.4
ZZ
10 12.220
0.3 12
13
ZZ
0.3 17
— 10 12.122
—
679
689
699
609
629X50
W679Z
W689Z
699Z
609Z
629X50Z
ZZ
ZZ
ZZ
ZZ
ZZ
—
FL689
−
−
−
—
FLW689Z
−
−
−
10.4
13.20.11.4 —
— 9.8
10.7
15.40.23.2 3.6
ZZ 10.6
0.3 8.2 —
− 11 11.618
0.3 14
− 11 13.122
—
0.3 20
—
− 13 13.922
2）This dimension applies to sealed and shielded bearings. 3）Values for double shielded bearings shown.
B-37