Inch Flanged 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

0.1875" (4.7625 mm)(3)

0.25" (6.3500 mm)(4)

0.3125" (7.9375 mm)(12)

0.375" (9.5250 mm)(11)
OD

0.09375" (2.3813 mm)(3)

0.125" (3.1750 mm)(16)

0.15625" (3.9688 mm)(4)

0.1875" (4.7625 mm)(7)
Width

0.0625" (1.5875 mm)(1)

0.0937" (2.3800 mm)(4)

0.1094" (2.7788 mm)(10)

0.125" (3.1750 mm)(7)

0.1406" (3.5712 mm)(4)

0.1562" (3.9675 mm)(4)
Static Load

0.018" (0.4572 mm)(1)

0.023" (0.5842 mm)(12)

0.03" (0.7620 mm)(4)

0.031" (0.7874 mm)(9)

0.036" (0.9144 mm)(4)

Part Number	Ring Material	OD	ID	Width	Flanged OD	Flanged Width	Inner Race OD	Inner Race Width
FRW166zz	52100 Chrome Steel	0.375" (9.5250 mm)	0.1875" (4.7625 mm)	0.125" (3.1750 mm)	0.422" (10.7188 mm)	0.031" (0.7874 mm)	0.235" (5.9690 mm)	0.1562" (3.9675 mm)
SFRW166	440C Stainless Steel	0.375" (9.5250 mm)	0.1875" (4.7625 mm)	0.125" (3.1750 mm)	0.422" (10.7188 mm)	0.023" (0.5842 mm)	0.235" (5.9690 mm)	0.1562" (3.9675 mm)
FRW166	52100 Chrome Steel	0.375" (9.5250 mm)	0.1875" (4.7625 mm)	0.125" (3.1750 mm)	0.422" (10.7188 mm)	0.023" (0.5842 mm)	0.235" (5.9690 mm)	0.1562" (3.9675 mm)
SFRW156zz	440C Stainless Steel	0.3125" (7.9375 mm)	0.1875" (4.7625 mm)	0.125" (3.1750 mm)	0.359" (9.1186 mm)	0.036" (0.9144 mm)	0.276" (7.0104 mm)	0.1562" (3.9675 mm)
FRW156zz	52100 Chrome Steel	0.3125" (7.9375 mm)	0.1875" (4.7625 mm)	0.125" (3.1750 mm)	0.359" (9.1186 mm)	0.036" (0.9144 mm)	0.276" (7.0104 mm)	0.1562" (3.9675 mm)
SFRW156	440C Stainless Steel	0.3125" (7.9375 mm)	0.1875" (4.7625 mm)	0.1094" (2.7788 mm)	0.359" (9.1186 mm)	0.023" (0.5842 mm)	0.221" (5.6134 mm)	0.1406" (3.5712 mm)
SFRW155zz	440C Stainless Steel	0.3125" (7.9375 mm)	0.15625" (3.9688 mm)	0.125" (3.1750 mm)	0.359" (9.1186 mm)	0.036" (0.9144 mm)	0.221" (5.6134 mm)	0.1562" (3.9675 mm)
FRW156	52100 Chrome Steel	0.3125" (7.9375 mm)	0.1875" (4.7625 mm)	0.1094" (2.7788 mm)	0.359" (9.1186 mm)	0.023" (0.5842 mm)	0.221" (5.6134 mm)	0.1406" (3.5712 mm)
FRW155	52100 Chrome Steel	0.3125" (7.9375 mm)	0.15625" (3.9688 mm)	0.1094" (2.7788 mm)	0.359" (9.1186 mm)	0.023" (0.5842 mm)	0.221" (5.6134 mm)	0.1406" (3.5712 mm)
FRW155zz	52100 Chrome Steel	0.3125" (7.9375 mm)	0.15625" (3.9688 mm)	0.125" (3.1750 mm)	0.359" (9.1186 mm)	0.036" (0.9144 mm)	0.221" (5.6134 mm)	0.1562" (3.9675 mm)
SFRW155	440C Stainless Steel	0.3125" (7.9375 mm)	0.15625" (3.9688 mm)	0.1094" (2.7788 mm)	0.359" (9.1186 mm)	0.023" (0.5842 mm)	0.221" (5.6134 mm)	0.1406" (3.5712 mm)
FRW2zz	52100 Chrome Steel	0.375" (9.5250 mm)	0.125" (3.1750 mm)	0.1562" (3.9675 mm)	0.44" (11.1760 mm)	0.03" (0.7620 mm)	0.2" (5.0800 mm)	0.1875" (4.7625 mm)
SFRW2zz	440C Stainless Steel	0.375" (9.5250 mm)	0.125" (3.1750 mm)	0.1562" (3.9675 mm)	0.44" (11.1760 mm)	0.03" (0.7620 mm)	0.2" (5.0800 mm)	0.1875" (4.7625 mm)
SFRW2-6	440C Stainless Steel	0.375" (9.5250 mm)	0.125" (3.1750 mm)	0.1094" (2.7788 mm)	0.422" (10.7188 mm)	0.023" (0.5842 mm)	0.173" (4.3942 mm)	0.1406" (3.5712 mm)
FRW2-6zz	52100 Chrome Steel	0.375" (9.5250 mm)	0.125" (3.1750 mm)	0.1406" (3.5712 mm)	0.422" (10.7188 mm)	0.031" (0.7874 mm)	0.173" (4.3942 mm)	0.1719" (4.3663 mm)
SFRW2-6zz	440C Stainless Steel	0.375" (9.5250 mm)	0.125" (3.1750 mm)	0.1406" (3.5712 mm)	0.422" (10.7188 mm)	0.031" (0.7874 mm)	0.173" (4.3942 mm)	0.1719" (4.3663 mm)
FRW2-6	52100 Chrome Steel	0.375" (9.5250 mm)	0.125" (3.1750 mm)	0.1094" (2.7788 mm)	0.422" (10.7188 mm)	0.023" (0.5842 mm)	0.173" (4.3942 mm)	0.1406" (3.5712 mm)
SFRW2-5zz	440C Stainless Steel	0.3125" (7.9375 mm)	0.125" (3.1750 mm)	0.1406" (3.5712 mm)	0.359" (9.1186 mm)	0.031" (0.7874 mm)	0.173" (4.3942 mm)	0.1719" (4.3663 mm)
FRW2-5zz	52100 Chrome Steel	0.3125" (7.9375 mm)	0.125" (3.1750 mm)	0.1406" (3.5712 mm)	0.359" (9.1186 mm)	0.031" (0.7874 mm)	0.173" (4.3942 mm)	0.1719" (4.3663 mm)
SFRW2-5	440C Stainless Steel	0.3125" (7.9375 mm)	0.125" (3.1750 mm)	0.1094" (2.7788 mm)	0.359" (9.1186 mm)	0.023" (0.5842 mm)	0.173" (4.3942 mm)	0.1406" (3.5712 mm)
FRW2-5	52100 Chrome Steel	0.3125" (7.9375 mm)	0.125" (3.1750 mm)	0.1094" (2.7788 mm)	0.359" (9.1186 mm)	0.023" (0.5842 mm)	0.173" (4.3942 mm)	0.1406" (3.5712 mm)
FRW2	52100 Chrome Steel	0.375" (9.5250 mm)	0.125" (3.1750 mm)	0.1562" (3.9675 mm)	0.44" (11.1760 mm)	0.03" (0.7620 mm)	0.2" (5.0800 mm)	0.1875" (4.7625 mm)
SFRW2	440C Stainless Steel	0.375" (9.5250 mm)	0.125" (3.1750 mm)	0.1562" (3.9675 mm)	0.44" (11.1760 mm)	0.03" (0.7620 mm)	0.2" (5.0800 mm)	0.1875" (4.7625 mm)
SFRW144zz	440C Stainless Steel	0.25" (6.3500 mm)	0.125" (3.1750 mm)	0.1094" (2.7788 mm)	0.296" (7.5184 mm)	0.031" (0.7874 mm)	0.161" (4.0894 mm)	0.1406" (3.5712 mm)
FRW144zz	52100 Chrome Steel	0.25" (6.3500 mm)	0.125" (3.1750 mm)	0.1094" (2.7788 mm)	0.296" (7.5184 mm)	0.031" (0.7874 mm)	0.161" (4.0894 mm)	0.1406" (3.5712 mm)
SFRW144	440C Stainless Steel	0.25" (6.3500 mm)	0.125" (3.1750 mm)	0.0937" (2.3800 mm)	0.296" (7.5184 mm)	0.023" (0.5842 mm)	0.161" (4.0894 mm)	0.125" (3.1750 mm)
FRW144	52100 Chrome Steel	0.25" (6.3500 mm)	0.125" (3.1750 mm)	0.0937" (2.3800 mm)	0.296" (7.5184 mm)	0.023" (0.5842 mm)	0.161" (4.0894 mm)	0.125" (3.1750 mm)
SFRW133zz	440C Stainless Steel	0.1875" (4.7625 mm)	0.09375" (2.3813 mm)	0.0937" (2.3800 mm)	0.234" (5.9436 mm)	0.031" (0.7874 mm)	0.118" (2.9972 mm)	0.125" (3.1750 mm)
FRW133zz	52100 Chrome Steel	0.1875" (4.7625 mm)	0.09375" (2.3813 mm)	0.0937" (2.3800 mm)	0.234" (5.9436 mm)	0.031" (0.7874 mm)	0.118" (2.9972 mm)	0.125" (3.1750 mm)
FRW133	52100 Chrome Steel	0.1875" (4.7625 mm)	0.09375" (2.3813 mm)	0.0625" (1.5875 mm)	0.234" (5.9436 mm)	0.018" (0.4572 mm)	0.118" (2.9972 mm)	0.0937" (2.3800 mm)

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