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Inch Flanged

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
    XZBRG Inch Flanged bearing dimension diagram
    0.1875" (4.7625 mm)(16)
    0.25" (6.3500 mm)(14)
  • OD
    0.3125" (7.9375 mm)(4)
    0.375" (9.5250 mm)(12)
    0.5" (12.7000 mm)(12)
    0.625" (15.8750 mm)(2)
  • Width
    0.125" (3.1750 mm)(18)
    0.1875" (4.7625 mm)(4)
    0.1906" (4.8412 mm)(4)
    0.196" (4.9784 mm)(4)
  • Static Load
    0.023" (0.5842 mm)(6)
    0.031" (0.7874 mm)(4)
    0.036" (0.9144 mm)(8)
    0.042" (1.0668 mm)(8)
    0.045" (1.1430 mm)(4)
Part NumberRing MaterialIDODWidthFlange ODFlange WidthSeal TypeDynamic Load
FR156 2rs 52100 Chrome Steel 0.1875" (4.7625 mm) 0.3125" (7.9375 mm) 0.125" (3.1750 mm) 0.359" (9.1186 mm) 0.036" (0.9144 mm) Sealed 69 lbf
SFR156 2rs 440C Stainless Steel 0.1875" (4.7625 mm) 0.3125" (7.9375 mm) 0.125" (3.1750 mm) 0.359" (9.1186 mm) 0.036" (0.9144 mm) Sealed 62 lbf
FR156zz 52100 Chrome Steel 0.1875" (4.7625 mm) 0.3125" (7.9375 mm) 0.125" (3.1750 mm) 0.359" (9.1186 mm) 0.036" (0.9144 mm) Shielded 69 lbf
SFR156zz 440C Stainless Steel 0.1875" (4.7625 mm) 0.3125" (7.9375 mm) 0.125" (3.1750 mm) 0.359" (9.1186 mm) 0.036" (0.9144 mm) Shielded 62 lbf
FR166 52100 Chrome Steel 0.1875" (4.7625 mm) 0.375" (9.5250 mm) 0.125" (3.1750 mm) 0.422" (10.7188 mm) 0.023" (0.5842 mm) Open 136 lbf
SFR166 440C Stainless Steel 0.1875" (4.7625 mm) 0.375" (9.5250 mm) 0.125" (3.1750 mm) 0.422" (10.7188 mm) 0.023" (0.5842 mm) Open 122 lbf
FR166 2rs 52100 Chrome Steel 0.1875" (4.7625 mm) 0.375" (9.5250 mm) 0.125" (3.1750 mm) 0.422" (10.7188 mm) 0.031" (0.7874 mm) Sealed 136 lbf
SFR166 2rs 440C Stainless Steel 0.1875" (4.7625 mm) 0.375" (9.5250 mm) 0.125" (3.1750 mm) 0.422" (10.7188 mm) 0.031" (0.7874 mm) Sealed 122 lbf
FR166zz 52100 Chrome Steel 0.1875" (4.7625 mm) 0.375" (9.5250 mm) 0.125" (3.1750 mm) 0.422" (10.7188 mm) 0.031" (0.7874 mm) Shielded 136 lbf
SFR166zz 440C Stainless Steel 0.1875" (4.7625 mm) 0.375" (9.5250 mm) 0.125" (3.1750 mm) 0.422" (10.7188 mm) 0.031" (0.7874 mm) Shielded 122 lbf
FR3 52100 Chrome Steel 0.1875" (4.7625 mm) 0.5" (12.7000 mm) 0.1906" (4.8412 mm) 0.565" (14.3510 mm) 0.042" (1.0668 mm) Open 249 lbf
SFR3 440C Stainless Steel 0.1875" (4.7625 mm) 0.5" (12.7000 mm) 0.1906" (4.8412 mm) 0.565" (14.3510 mm) 0.042" (1.0668 mm) Open 224 lbf
FR3 2rs 52100 Chrome Steel 0.1875" (4.7625 mm) 0.5" (12.7000 mm) 0.1906" (4.8412 mm) 0.565" (14.3510 mm) 0.042" (1.0668 mm) Sealed 249 lbf
SFR3 2rs 440C Stainless Steel 0.1875" (4.7625 mm) 0.5" (12.7000 mm) 0.1906" (4.8412 mm) 0.565" (14.3510 mm) 0.042" (1.0668 mm) Sealed 224 lbf
FR3zz 52100 Chrome Steel 0.1875" (4.7625 mm) 0.5" (12.7000 mm) 0.196" (4.9784 mm) 0.565" (14.3510 mm) 0.042" (1.0668 mm) Shielded 249 lbf
SFR3zz 440C Stainless Steel 0.1875" (4.7625 mm) 0.5" (12.7000 mm) 0.196" (4.9784 mm) 0.565" (14.3510 mm) 0.042" (1.0668 mm) Shielded 224 lbf
FR168 52100 Chrome Steel 0.25" (6.3500 mm) 0.375" (9.5250 mm) 0.125" (3.1750 mm) 0.422" (10.7188 mm) 0.023" (0.5842 mm) Open 71 lbf
SFR168 440C Stainless Steel 0.25" (6.3500 mm) 0.375" (9.5250 mm) 0.125" (3.1750 mm) 0.422" (10.7188 mm) 0.023" (0.5842 mm) Open 64 lbf
FR168 2rs 52100 Chrome Steel 0.25" (6.3500 mm) 0.375" (9.5250 mm) 0.125" (3.1750 mm) 0.422" (10.7188 mm) 0.036" (0.9144 mm) Sealed 71 lbf
SFR168 2rs 440C Stainless Steel 0.25" (6.3500 mm) 0.375" (9.5250 mm) 0.125" (3.1750 mm) 0.422" (10.7188 mm) 0.036" (0.9144 mm) Sealed 64 lbf
FR168zz 52100 Chrome Steel 0.25" (6.3500 mm) 0.375" (9.5250 mm) 0.125" (3.1750 mm) 0.422" (10.7188 mm) 0.036" (0.9144 mm) Shielded 71 lbf
SFR168zz 440C Stainless Steel 0.25" (6.3500 mm) 0.375" (9.5250 mm) 0.125" (3.1750 mm) 0.422" (10.7188 mm) 0.036" (0.9144 mm) Shielded 64 lbf
FR188 52100 Chrome Steel 0.25" (6.3500 mm) 0.5" (12.7000 mm) 0.125" (3.1750 mm) 0.547" (13.8938 mm) 0.023" (0.5842 mm) Open 344 lbf
SFR188 440C Stainless Steel 0.25" (6.3500 mm) 0.5" (12.7000 mm) 0.125" (3.1750 mm) 0.547" (13.8938 mm) 0.023" (0.5842 mm) Open 310 lbf
FR188 2rs 52100 Chrome Steel 0.25" (6.3500 mm) 0.5" (12.7000 mm) 0.1875" (4.7625 mm) 0.547" (13.8938 mm) 0.045" (1.1430 mm) Sealed 344 lbf
SFR188 2rs 440C Stainless Steel 0.25" (6.3500 mm) 0.5" (12.7000 mm) 0.1875" (4.7625 mm) 0.547" (13.8938 mm) 0.045" (1.1430 mm) Sealed 310 lbf
FR188zz 52100 Chrome Steel 0.25" (6.3500 mm) 0.5" (12.7000 mm) 0.1875" (4.7625 mm) 0.547" (13.8938 mm) 0.045" (1.1430 mm) Shielded 344 lbf
SFR188zz 440C Stainless Steel 0.25" (6.3500 mm) 0.5" (12.7000 mm) 0.1875" (4.7625 mm) 0.547" (13.8938 mm) 0.045" (1.1430 mm) Shielded 310 lbf
FR4 52100 Chrome Steel 0.25" (6.3500 mm) 0.625" (15.8750 mm) 0.196" (4.9784 mm) 0.69" (17.5260 mm) 0.042" (1.0668 mm) Open 283 lbf
SFR4 440C Stainless Steel 0.25" (6.3500 mm) 0.625" (15.8750 mm) 0.196" (4.9784 mm) 0.69" (17.5260 mm) 0.042" (1.0668 mm) Open 255 lbf
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