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