The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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TDI bearings have a one-piece double inner race and two single outer races and are typically supplied complete with an outer race spacer as a pre-set assembly. The bearing can be used at fixed positions on rotation shaft applications. For rotating housing application it can be used to float on the stationary shaft.
Unit of Measure

Other Dimensions

Weight

 N/A 58.6 Kg129.3 lb

Inner Ring Width (B)

 N/A 5.6875 in144.463 mm
Max Shaft Fillet Radius1 N/A 0.13 in3.3 mm

Shaft Backing Shoulder Diameter - Frontface (da)

 N/A 12.2 in310 mm

Cage Location Relative to Frontface (Ab) 

 N/A 0.22 in5.6 mm

Key Dimensions

Series

 N/A M255400

Cone Part Number

 N/A M255449DW

Bore (d)

 N/A 11.375 in288.925 mm
Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 69300 lbf308000 N
Dynamic Radial Load Rating - 1M Revs (C1) 3 N/A 267000 lbf1190000 N
Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row) 4 N/A 121000 lbf537000 N
K Factor 5 N/A 1.73

Note

 N/A This part has a non-standard shoulder design. Please email customer CAD for shoulder details to ensure the proper design of mating components.

Ratings

C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)6 N/A 466000 lbf2070000 N

Static Radial Load Rating (C0)

 N/A 567000 lbf2520000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)7 N/A 40100 lbf179000 N

Factors

Geometry Factor (Cg)8 N/A 0.172
  • 1 These maximum fillet radii will be cleared by the bearing corners.
  • 2 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 3 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 4 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.
  • 5 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 6 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 7 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.
  • 8 Geometry constant for Lubrication Life Adjustment Factor a3l.