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 LL481400

Cone Part Number

 N/A LL481448

Cup Part Number

 N/A LL481411

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Related Assembly Number(s)

 N/A LL481448-90011

Dimensions

d - Bore

 N/A 26.5000 in673.100 mm

D - Cup Outer Diameter

 N/A 31.2500 in793.750 mm

B - Cone Width

 N/A 2.4375 in61.913 mm

C - Cup Width

 N/A 1.9375 in49.213 mm

T - Bearing Width

 N/A 2.6250 in66.675 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.25 in6.35 mm
r - Cup Backface "To Clear" Radius2 N/A 0.250 in6.35 mm

da - Cone Frontface Backing Diameter

 N/A 27.17 in690 mm

db - Cone Backface Backing Diameter

 N/A 27.64 in702 mm

Da - Cup Frontface Backing Diameter

 N/A 30.46 in773.68 mm

Db - Cup Backface Backing Diameter

 N/A 30.12 in765.05 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.18 in4.6 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.07 in1.8 mm
a - Effective Center Location3 N/A 2.12 in53.8 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 64600 lbf287000 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 249000 lbf1110000 N

C0 - Static Radial Rating

 N/A 707000 lbf3140000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 39800 lbf177000 N

Factors

K - Factor7 N/A 1.62
e - ISO Factor8 N/A 0.36
Y - ISO Factor9 N/A 1.67

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 8760

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 1650
Cg - Geometry Factor10 N/A 0.266
  • 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.