Montage of Timken Bearing Products
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 HH249900

Cone Part Number

 N/A HH249949

Cup Part Number

 N/A HH249910

Design Unit

 N/A Inch

Cage Material

 N/A Pin-Type

Dimensions

d - Bore

 N/A 9.7500 in247.650 mm

D - Cup Outer Diameter

 N/A 16.0000 in406.400 mm

B - Cone Width

 N/A 4.6250 in117.475 mm

C - Cup Width

 N/A 3.6875 in93.663 mm

T - Bearing Width

 N/A 4.5625 in115.888 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.25 in6.4 mm
r - Cup Backface "To Clear" Radius2 N/A 0.250 in6.35 mm

da - Cone Frontface Backing Diameter

 N/A 10.83 in275 mm

db - Cone Backface Backing Diameter

 N/A 11.18 in284 mm

Da - Cup Frontface Backing Diameter

 N/A 15.10 in383.54 mm

Db - Cup Backface Backing Diameter

 N/A 14.41 in366.01 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.24 in6.1 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.28 in7.1 mm
a - Effective Center Location3 N/A -1.13 in-28.7 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 121000 lbf539000 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 468000 lbf2080000 N

C0 - Static Radial Rating

 N/A 846000 lbf3770000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 69000 lbf307000 N

Factors

K - Factor7 N/A 1.76
e - ISO Factor8 N/A 0.33
Y - ISO Factor9 N/A 1.8

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 2370

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 173
Cg - Geometry Factor10 N/A 0.175
  • 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.