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  • Clearance fit suggested for outer ring when housing is stationary relative to load.
  • Tight transition fit suggested if housing rotates relative to load.
  • Consult your Timken representative for oscillating applications (e.g., low radial-clearance concerns).
  • Unmarked end of outer ring should be assembled against housing shoulder to clear maximum allowed housing fillet (ras max).
  • Meets Military Standard MS 51961.
Unit of Measure

Bearing Dimensions

Shaft Diameter (Fw)

 N/A 209.55 mm8.25 in

D - Outer Diameter

 N/A 257.175 mm10.1250 in

Dimension C/B

 N/A 76.2 mm3.0000 in

Specifications

Static Load Rating Co

 N/A 1290000 N290000 lbf
Dynamic Load Rating C11 N/A 563000 N126000 lbf
Geometry Factor Cg2 N/A 0.1736

Thermal Speed Ratings - Oil

 N/A 1500 rpm

Thermal Speed Ratings - Grease

 N/A 1300 rpm

Mounting Data

Chamfer rsmin

 N/A 3.050 mm0.12 in

Max. Mounting Dimensions Clearance Fit 1

 N/A 209.55 mm8.25 in

Min. Mounting Dimensions Clearance Fit 1

 N/A 209.520 mm8.2488 in

Max. Mounting Dimensions Clearance Fit 2

 N/A 257.226 mm10.1270 in

Min. Mounting Dimensions Clearance Fit 2

 N/A 257.175 mm10.125 in

Max. Mounting Dimensions Tight Transition Fit S

 N/A 8.2480 mm209.499 in

Min. Mounting Dimensions Tight Transition Fit S

 N/A 209.469 mm8.2468 in

Max. Mounting Dimensions Tight Transition Fit H

 N/A 257.109 mm10.1220 in

Min. Mounting Dimensions Tight Transition Fit H

 N/A 257.160 mm10.1240 in

Shoulder Diameter Da

 N/A 241.30 mm9.500 in

Sub Assembly Part Numbers

Used with Inner Ring Designation

 N/A IR-11213248
  • 1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 2 Cg factor for bearing without inner ring.
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