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 HM804800

Cone Part Number

 N/A HM804840

Cup Part Number

 N/A HM804811

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 1 5/8 in41.275 mm

D - Cup Outer Diameter

 N/A 3.7500 in95.250 mm

B - Cone Width

 N/A 1.1563 in29.370 mm

C - Cup Width

 N/A 0.9063 in23.020 mm

T - Bearing Width

 N/A 1.1875 in30.163 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.14 in3.600 mm
r - Cup Backface "To Clear" Radius2 N/A 0.030 in0.76 mm

da - Cone Frontface Backing Diameter

 N/A 2.13 in54 mm

db - Cone Backface Backing Diameter

 N/A 2.4 in61 mm

Da - Cup Frontface Backing Diameter

 N/A 3.62 in91.90 mm

Db - Cup Backface Backing Diameter

 N/A 3.27 in83.06 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.14 in3.6 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.03 in0.8 mm
a - Effective Center Location3 N/A -0.15 in-3.8 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 8590 lbf38200 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 33100 lbf147000 N

C0 - Static Radial Rating

 N/A 35400 lbf157000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 8030 lbf35700 N

Factors

K - Factor7 N/A 1.07
e - ISO Factor8 N/A 0.55
Y - ISO Factor9 N/A 1.1
Cg - Geometry Factor10 N/A 0.102
  • 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.