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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 5.00 in

D - Outer Diameter

 N/A 6 1/2 in

Dimension C/B

 N/A 2.5 in

Key Dimensions

Static Load Rating Co

 N/A 684000 N154000 lbf
Dynamic Load Rating C11 N/A 345000 N77600 lbf
Geometry Factor Cg2 N/A 0.1213

Thermal Speed Ratings - Oil

 N/A 2800 rpm

Thermal Speed Ratings - Grease

 N/A 2500 rpm

Mounting Data

Chamfer rsmin

 N/A 0.1 in

Max. Mounting Dimensions Clearance Fit 1

 N/A 5.00 in

Min. Mounting Dimensions Clearance Fit 1

 N/A 4.9990 in

Max. Mounting Dimensions Clearance Fit 2

 N/A 6.5016 in

Min. Mounting Dimensions Clearance Fit 2

 N/A 6.500 in

Max. Mounting Dimensions Tight Transition Fit S

 N/A 126.959 in

Min. Mounting Dimensions Tight Transition Fit S

 N/A 4.9974 in

Max. Mounting Dimensions Tight Transition Fit H

 N/A 6.4978 in

Min. Mounting Dimensions Tight Transition Fit H

 N/A 6.4994 in

Shoulder Diameter Da

 N/A 5.938 in

Sub Assembly Part Numbers

Used with Inner Ring Designation

 N/A IR-648040
  • 1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 2 Cg factor for bearing without inner ring.