Menu
Batch CAD Cart (0) ▾
  • Cart is empty
  1. Click Here for Batch Download
Request Information Add to CAD Cart
Tapered Roller Bearings - 2TS-IM (Matched Bearing Assembly, Indirect Mount)
Unit of Measure

Specifications

Cone Part Number

 N/A 78250

Cup Part Number

 N/A 78537

Inner Spacer Part Number

 N/A X7S-78250

Outer Spacer Part Number

 N/A Y17S-493

Design Unit

 N/A Inch

Dimensions

d - Bore

 N/A 2 1/2 in63.500 mm

D - Cup Outer Diameter

 N/A 5.3750 in136.525 mm

T - Width

 N/A 2.9365 in74.587 mm

C - Width

 N/A 2.1125 in53.658 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.09 in2.300 mm
r - Cup Backface "To Clear" Radius2 N/A 0.030 in0.8 mm

db - Cone Backface Backing Diameter

 N/A 3.35 in85 mm

Da - Cup Frontface Backing Diameter

 N/A 5.16 in131.06 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 11800 lbf52600 N
C1 - Dynamic Radial Rating (1 million revolutions)4 N/A 79300 lbf353000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)5 N/A 17500 lbf77900 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6 N/A 20600 lbf91500 N

Factors

K - Factor7 N/A 0.67
e - ISO Factor8 N/A 0.87
Y1 - ISO Factor9 N/A 0.78
Y2 - ISO Factor10 N/A 1.16
  • 1 These maximum fillet radii will be cleared by the bearing corners.
  • 2 These maximum fillet radii will be cleared by the bearing corners.
  • 3 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 4 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 5 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.
  • 6 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.
  • 7 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 8 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 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.
By clicking Submit, you consent to the personal information you provide being used in the manner as described in our Privacy Notice, including access to that information by Timken personnel who may be located outside your home country. In addition, you agree that the CAD drawings are for your personal, one-time use only, and that you will not modify or create any compilation or derivative work using the CAD drawings or distribute or display the CAD drawings on any website or other media.