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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 139.70 mm5.50 in

D - Outer Diameter

 N/A 177.800 mm7.0000 in

Dimension C/B

 N/A 63.5 mm2.5000 in

Specifications

Static Load Rating Co

 N/A 697000 N157000 lbf
Dynamic Load Rating C11 N/A 342000 N76900 lbf
Geometry Factor Cg2 N/A 0.1297

Thermal Speed Ratings - Oil

 N/A 2600 rpm

Thermal Speed Ratings - Grease

 N/A 2300 rpm

Mounting Data

Chamfer rsmin

 N/A 2.540 mm0.1 in

Max. Mounting Dimensions Clearance Fit 1

 N/A 139.70 mm5.50 in

Min. Mounting Dimensions Clearance Fit 1

 N/A 139.675 mm5.4990 in

Max. Mounting Dimensions Clearance Fit 2

 N/A 177.841 mm7.0016 in

Min. Mounting Dimensions Clearance Fit 2

 N/A 177.800 mm7.000 in

Max. Mounting Dimensions Tight Transition Fit S

 N/A 5.4984 mm139.659 in

Min. Mounting Dimensions Tight Transition Fit S

 N/A 139.634 mm5.4974 in

Max. Mounting Dimensions Tight Transition Fit H

 N/A 177.744 mm6.9978 in

Min. Mounting Dimensions Tight Transition Fit H

 N/A 177.785 mm6.9994 in

Shoulder Diameter Da

 N/A 163.51 mm6.438 in

Sub Assembly Part Numbers

Used with Inner Ring Designation

 N/A IR-728840
  • 1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 2 Cg factor for bearing without inner ring.