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Miniature Ball bearings
Flange bearings
Thrust Ball bearings
Ceramic Ball Bearings
Stainless Steel Bearings
Special Bearings

Structure of bearing
Bearing Material
Accuracy
Lubrication
Vibration and noise
Internal clearance
Points of attention for using
Installation
Inspection and Test
 
¡¡Products >> Inch series miniature ball bearings


Type

Bore Diameter (d)

Outer Diameter (D)
Width(b)


Load Rating Cr(N)


Load Rating Cor(N)
Max. Speed
open
zz
Grease
Oil
*1000rpm
R1-4zz
1.984
6.35
2.38
3.571
284
96
67
80
R133zz
2.38
4.762
1.588
2.38
144
53
80
95
R1-5zz
2.38
7.938
2.779
3.571
552
176
60
71
R144Jzzs

 

3.175
6.35
2.38
2.779
311
110
67
80
R144zzs
6.35
2.38
2.779
284
96
67
80
R2-5zz
7.938
2.779
3.571
558
180
60
67
R2-6zz
9.525
2.779
3.571
640
227
53
63
R2zz
9.525
3.967
3.967
631
219
56
67
R2Azz
12.7
4.366
4.366
640
227
53
63
R155zzs
0.3967
7.938
2.779
3.175
359
150
53
63
R156zzs

 

4.762
7.938
2.779
3.175
359
150
53
63
R166zzs
9.525
3.175
3.175
709
272
50
60
R3zz
12.7
3.967
4.978
1301
488
43
53
R3Azz
15.875
4.978
4.978
1480
621
38
45
R168zzs

 

6.35
9.525
3.175
3.175
373
172
48
56
R188zz
12.7
3.175
4.762
1082
442
40
50
R4zz
15.875
4.978
4.978
1480
621
38
45
R4Azz
19.05
5.558
7.142
2336
896
36
43
R1810zzs
7.938
12.7
3.967
3.967
542
276
40
48
R6zz
9.525
22.225
5.558
7.142
3332
1422
32
38
R1038zz
9.525
15.875
3.967
3.967
815
411
28
31
R1212zz
12.7
19.05
3.967
3.967
898
524
21
26