Inch Extended

Miniature bearings are sometimes referred to as instrument bearings and are used in applications as varied as gyros, anemometers, flow meters, miniature gearboxes, small motors and radio controlled models. Miniature ball bearings can be open or shielded, which helps prevent dirt from entering and lubricant from leaking out, and unflanged or flanged for easier plate mounting. Some miniature ball bearing options feature extended inner rings to help fit certain locking devices when a press fit is not possible

FILTERS

ID

0.125"(4)

0.15625"(4)

0.1875"(12)

0.25"(10)
OD

0.3125"(8)

0.375"(12)

0.5"(7)

0.625"(3)
Width

0.1094"(4)

0.125"(14)

0.1406"(2)

0.1562"(4)

0.1875"(1)

0.196"(5)
Static Load

0.1406"(4)

0.1562"(14)

0.1719"(2)

0.1875"(4)

0.2188"(1)

0.2273"(5)

Part Number	Ring Material	OD	ID	Width	Inner Race OD	Inner Race Width	Shield Type	Dynamic Load
RW4zz	52100 Chrome Steel	0.25"	0.625"	0.196"	0.364"	0.2273"	Shielded	283 lbf
SRW4	440C Stainless Steel	0.25"	0.625"	0.196"	0.364"	0.2273"	Open	255 lbf
RW4	52100 Chrome Steel	0.25"	0.625"	0.196"	0.364"	0.2273"	Open	283 lbf
SRW188zz	440C Stainless Steel	0.25"	0.5"	0.1875"	0.33"	0.2188"	Shielded	186 lbf
RW168	52100 Chrome Steel	0.25"	0.375"	0.125"	0.285"	0.1562"	Open	71 lbf
SRW168	440C Stainless Steel	0.25"	0.375"	0.125"	0.285"	0.1562"	Open	64 lbf
RW168zz	52100 Chrome Steel	0.25"	0.375"	0.125"	0.285"	0.1562"	Shielded	71 lbf
SRW168zz	440C Stainless Steel	0.25"	0.375"	0.125"	0.285"	0.1562"	Shielded	64 lbf
RW188	52100 Chrome Steel	0.25"	0.5"	0.125"	0.33"	0.1562"	Open	207 lbf
SRW188	440C Stainless Steel	0.25"	0.5"	0.125"	0.33"	0.1562"	Open	186 lbf
SRW3	440C Stainless Steel	0.1875"	0.5"	0.1562"	0.276"	0.1875"	Open	224 lbf
SRW3zz	440C Stainless Steel	0.1875"	0.5"	0.196"	0.276"	0.2273"	Shielded	224 lbf
RW3zz	52100 Chrome Steel	0.1875"	0.5"	0.196"	0.276"	0.2273"	Shielded	249 lbf
RW3	52100 Chrome Steel	0.1875"	0.5"	0.1562"	0.276"	0.1875"	Open	249 lbf
SRW166zz	440C Stainless Steel	0.1875"	0.375"	0.125"	0.235"	0.1562"	Shielded	122 lbf
RW166zz	52100 Chrome Steel	0.1875"	0.375"	0.125"	0.235"	0.1562"	Shielded	136 lbf
SRW166	440C Stainless Steel	0.1875"	0.375"	0.125"	0.235"	0.1562"	Open	122 lbf
RW166	52100 Chrome Steel	0.1875"	0.375"	0.125"	0.235"	0.1562"	Open	136 lbf
SRW156zz	440C Stainless Steel	0.1875"	0.3125"	0.125"	0.221"	0.1562"	Shielded	62 lbf
RW156zz	52100 Chrome Steel	0.1875"	0.3125"	0.125"	0.221"	0.1562"	Shielded	69 lbf
SRW156	440C Stainless Steel	0.1875"	0.3125"	0.1094"	0.221"	0.1406"	Open	62 lbf
RW156	52100 Chrome Steel	0.1875"	0.3125"	0.1094"	0.221"	0.1406"	Open	69 lbf
SRW2-6zz	440C Stainless Steel	0.125"	0.375"	0.1406"	0.173"	0.1719"	Shielded	110 lbf
SRW155zz	440C Stainless Steel	0.15625"	0.3125"	0.125"	0.221"	0.1562"	Shielded	62 lbf
RW155zz	52100 Chrome Steel	0.15625"	0.3125"	0.125"	0.221"	0.1562"	Shielded	69 lbf
SRW155	440C Stainless Steel	0.15625"	0.3125"	0.1094"	0.221"	0.1406"	Open	62 lbf
RW155	52100 Chrome Steel	0.15625"	0.3125"	0.1094"	0.221"	0.1406"	Open	69 lbf
SRW2zz	440C Stainless Steel	0.125"	0.375"	0.1562"	0.2"	0.1875"	Shielded	109 lbf
RW2-6zz	52100 Chrome Steel	0.125"	0.375"	0.1406"	0.173"	0.1719"	Shielded	122 lbf
RW2zz	52100 Chrome Steel	0.125"	0.375"	0.1562"	0.2"	0.1875"	Shielded	121 lbf

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