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 3.60 Kg7.9 lb

Inner Ring Width (B)

 N/A 2.5625 in65.088 mm
Max Shaft Fillet Radius1 N/A 0.03 in0.8 mm

Shaft Backing Shoulder Diameter - Frontface (da)

 N/A 4.53 in115 mm

Cage Location Relative to Frontface (Ab) 

 N/A -0.03 in-0.8 mm

Key Dimensions

Series

 N/A LM121900

Cone Part Number

 N/A LM121948D

Bore (d)

 N/A 4.25 in107.95 mm
Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 9810 lbf43600 N
Dynamic Radial Load Rating - 1M Revs (C1) 3 N/A 37800 lbf168000 N
Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row) 4 N/A 17100 lbf75900 N
K Factor 5 N/A 2.07

Ratings

C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)6 N/A 65900 lbf293000 N

Static Radial Load Rating (C0)

 N/A 70200 lbf312000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)7 N/A 4740 lbf21100 N

Factors

G1 Factor

 N/A 218
Geometry Factor (Cg)8 N/A 0.137
  • 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.