Bearing No.

Inner d
mm        inch

Outer D
mm        inch

Width W

Radium r
mm        inch

Basic Load Rating KN

Open
mm        inch

Shielded/Sealed
mm        inch

Dynamic C

Static C0

R144
R2
R2A
R155
R156
R166
R3
R3A
R168
R188
R4
R4A
R6
R8

3.175     .1250
3.175     .1250
3.175     .1250
3.967     .1562
4.763     .1875
4.763     .1875
4.763     .1875
4.763     .1875
6.350     .2500
6.350     .2500
6.350     .2500
6.350     .2500
9.525     .3750
12.700   .5000

6.350     .2500
9.525     .3750
12.700   .5000
7.938     .3125
7.938     .3125
9.525     .3750
12.700   .5000
12.700   .5000
9.525     .3750
12.700   .5000
15.875   .6250
19.050   .7500
22.225   .8750
28.575   .1250

2.2380   .0937
3.967     .1562
4.366     .1719
2.779     .1094
2.78       .1094
3.18       .1250
3.97       .1562
4.98       .1960
3.18       .1250
3.18       .1250
4.98       .1960
5.56       .2188
5.56       .2188
6.35       .2500

2.779     .1094
3.967     .1562
4.366     .1719
3.175     .1250
3.18       .1250
3.18       .1250
4.98       .1960
4.98       .1960
3.18       .1250
4.76       .1875
4.98       .1960
7.14       .2812
7.14       .2812
7.94       .3125

0.10       .0039
0.30       .0118
0.30       .0118
0.10       .0039
0.1         .004
0.1         .004
0.15       .006
0.15       .006
0.1         .004
0.15       .006
0.2         .008
0.3         .012
0.3         .012
0.3         .012

0.395
0.710
1.31
1.31
0.268
0.83
1.48
2.34
3.30
3.912

0.143
0.268
0.49
0.49
0.136
0.37
0.615
0.885
1.40
2.245