Aerospace / Military
Aerospace Series General Aviation Rod Ends Spherical Bearings Mil Spec Series Rod Ends Spherical Bearings Bushings Approved Part Numbers
Commercial / Industrial
Rod End Bearings Inch Rod Ends Metric Rod Ends Spherical Bearings Inch Spherical Bearings Metric Spherical Bearings
Technical Resources
Terms and Definitions Articles Technical Data FAQs Key Term Translation Custom Engineered Products
Online Catalog
Engineers power search our entire catalog of bearing and bushings, with access to every attribute and technical specification possible. View our online catalog...
CAD (0) ▾
  • Cart is empty
  1. Request CAD files
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 L910300

Cone Part Number

 N/A L910349

Cup Part Number

 N/A L910310

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Related Assembly Number(s)

 N/A L910349-90402

Dimensions

d - Bore

 N/A 2.4995 in63.487 mm

D - Cup Outer Diameter

 N/A 3.7392 in94.976 mm

B - Cone Width

 N/A 0.6102 in15.499 mm

C - Cup Width

 N/A 0.4724 in11.999 mm

T - Bearing Width

 N/A 0.6693 in17.000 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.040 in1.020 mm
r - Cup Backface "To Clear" Radius2 N/A 0.04 in1.02 mm

da - Cone Frontface Backing Diameter

 N/A 2.72 in69 mm

db - Cone Backface Backing Diameter

 N/A 2.76 in70 mm

Da - Cup Frontface Backing Diameter

 N/A 3.66 in92.96 mm

Db - Cup Backface Backing Diameter

 N/A 3.35 in85.09 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.08 in2 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.05 in1.3 mm
a - Effective Center Location3 N/A 0.45 in11.4 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 2550 lbf11400 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 9850 lbf43800 N

C0 - Static Radial Rating

 N/A 14000 lbf62300 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 3410 lbf15200 N

Factors

K - Factor7 N/A 0.75
e - ISO Factor8 N/A 0.78
Y - ISO Factor9 N/A 0.77

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 33.5

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 38.2
Cg - Geometry Factor10 N/A 0.101
  • 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.