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Unit of Measure

Key Dimensions

Cone Part Number

 N/A HM252349NA

Cup Part Number

 N/A HM252315CD

Design Unit

 N/A Inch

Bore (d)

 N/A 10.25 in260.35 mm

O.D. (D)

 N/A 16.997 in431.724 mm
Dynamic Radial Load Rating - 90M Revs (C90) 1 N/A 90100 lbf401000 N
Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)2 N/A 157000 lbf698000 N
K Factor 3 N/A 1.76
e Factor 4 N/A 0.33

Other Dimensions

T - Bearing Width across Cones

 N/A 6.8125 in173.038 mm
Max Shaft Fillet Radius5 N/A 0.25 in6.4 mm
Max Housing Fillet Radius6 N/A 0.06 in1.5 mm

Outer Ring Width (C)

 N/A 5.0625 in128.588 mm

Shaft Backing Shoulder Diameter - Backface (db)

 N/A 11.46 in291.0 mm

Housing Backing Shoulder Diameter - Frontface (Da)

 N/A 15.73 in399.5 mm

Ka

 N/A 1.13 in28.58 mm

Kb

 N/A 0.47 in11.91 mm

Weight

 N/A 204.87 lb92.94 Kg

Ratings

C1 - Dynamic Radial Rating (1 million revolutions)7 N/A 605000 lbf2690000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)8 N/A 51300 lbf228000 N

Factors

Y1 Factor 9 N/A 2.03
Y2 Factor 10 N/A 3.02
  • 1 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 2 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.
  • 3 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 4 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 5 These maximum fillet radii will be cleared by the bearing corners.
  • 6 These maximum fillet radii will be cleared by the bearing corners.
  • 7 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 8 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.
  • 9 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 10 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.