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

0.5" (12.7000 mm)(4)

0.625" (15.8750 mm)(4)
OD

0.25" (6.3500 mm)(6)

0.3125" (7.9375 mm)(2)
Width

0.125" (3.1750 mm)(1)

0.1562" (3.9675 mm)(2)

0.1875" (4.7625 mm)(1)

0.196" (4.9784 mm)(4)
Static Load

0.023" (0.5842 mm)(1)

0.031" (0.7874 mm)(2)

0.035" (0.8890 mm)(1)

0.042" (1.0668 mm)(4)

Part Number	Ring Material	OD	ID	Width	Flanged OD	Flanged Width	Inner Race OD	Inner Race Width
FRW188zz	52100 Chrome Steel	0.5" (12.7000 mm)	0.25" (6.3500 mm)	0.1875" (4.7625 mm)	0.547" (13.8938 mm)	0.035" (0.8890 mm)	0.33" (8.3820 mm)	0.2188" (5.5575 mm)
FRW4	52100 Chrome Steel	0.625" (15.8750 mm)	0.25" (6.3500 mm)	0.196" (4.9784 mm)	0.69" (17.5260 mm)	0.042" (1.0668 mm)	0.362" (9.1948 mm)	0.2273" (5.7734 mm)
SFRW188	440C Stainless Steel	0.5" (12.7000 mm)	0.25" (6.3500 mm)	0.125" (3.1750 mm)	0.547" (13.8938 mm)	0.023" (0.5842 mm)	0.364" (9.2456 mm)	0.1562" (3.9675 mm)
SFRW4	440C Stainless Steel	0.625" (15.8750 mm)	0.25" (6.3500 mm)	0.196" (4.9784 mm)	0.69" (17.5260 mm)	0.042" (1.0668 mm)	0.362" (9.1948 mm)	0.2273" (5.7734 mm)
FRW4zz	52100 Chrome Steel	0.625" (15.8750 mm)	0.25" (6.3500 mm)	0.196" (4.9784 mm)	0.69" (17.5260 mm)	0.042" (1.0668 mm)	0.364" (9.2456 mm)	0.2273" (5.7734 mm)
SFRW4zz	440C Stainless Steel	0.625" (15.8750 mm)	0.25" (6.3500 mm)	0.196" (4.9784 mm)	0.69" (17.5260 mm)	0.042" (1.0668 mm)	0.364" (9.2456 mm)	0.2273" (5.7734 mm)
SFRW1810zz	440C Stainless Steel	0.5" (12.7000 mm)	0.3125" (7.9375 mm)	0.1562" (3.9675 mm)	0.547" (13.8938 mm)	0.031" (0.7874 mm)	0.362" (9.1948 mm)	0.1875" (4.7625 mm)
FRW1810zz	52100 Chrome Steel	0.5" (12.7000 mm)	0.3125" (7.9375 mm)	0.1562" (3.9675 mm)	0.547" (13.8938 mm)	0.031" (0.7874 mm)	0.362" (9.1948 mm)	0.1875" (4.7625 mm)

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