Menu
Batch CAD Cart (0) ▾
  • Cart is empty
  1. Click Here for Batch Download
Request Information Add to CAD Cart
This is the most basic and most widely used type of tapered roller bearing. It consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft.
Unit of Measure

Specifications

Series

 N/A 1900

Cone Part Number

 N/A 1986

Cup Part Number

 N/A 1932

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 1 in25.400 mm

D - Cup Outer Diameter

 N/A 2.3125 in58.738 mm

B - Cone Width

 N/A 0.7620 in19.355 mm

C - Cup Width

 N/A 0.5937 in15.080 mm

T - Bearing Width

 N/A 0.75 in19.05 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.050 in1.300 mm
r - Cup Backface "To Clear" Radius2 N/A 0.050 in1.27 mm

da - Cone Frontface Backing Diameter

 N/A 1.26 in32 mm

db - Cone Backface Backing Diameter

 N/A 1.34 in34 mm

Da - Cup Frontface Backing Diameter

 N/A 2.17 in55.10 mm

Db - Cup Backface Backing Diameter

 N/A 2.05 in52.07 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.08 in2 mm

Aa - Cage-Cone Backface Clearance

 N/A 0 in0 mm
a - Effective Center Location3 N/A -0.23 in-5.8 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 2820 lbf12500 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 10900 lbf48400 N

C0 - Static Radial Rating

 N/A 11300 lbf50200 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 1590 lbf7080 N

Factors

K - Factor7 N/A 1.77
e - ISO Factor8 N/A 0.33
Y - ISO Factor9 N/A 1.82

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 12.5

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 6.33
Cg - Geometry Factor10 N/A 0.0565
  • 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 Negative value indicates effective center inside cone backface.
  • 4 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 5 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 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 Geometry constant for Lubrication Life Adjustment Factor a3l.
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.