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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 16000

Cone Part Number

 N/A J16154

Cup Part Number

 N/A J16285

Design Unit

 N/A Metric

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 39.000 mm1.5354 in

D - Cup Outer Diameter

 N/A 72.014 mm2.8352 in

B - Cone Width

 N/A 20.638 mm0.8125 in

C - Cup Width

 N/A 16.637 mm0.6550 in

T - Bearing Width

 N/A 21.400 mm0.8425 in

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 3.560 mm0.14 in
r - Cup Backface "To Clear" Radius2 N/A 0.40 mm0.015 in

da - Cone Frontface Backing Diameter

 N/A 44.5 mm1.75 in

db - Cone Backface Backing Diameter

 N/A 51 mm2.01 in

Da - Cup Frontface Backing Diameter

 N/A 67.10 mm2.68 in

Db - Cup Backface Backing Diameter

 N/A 62.99 mm2.48 in

Ab - Cage-Cone Frontface Clearance

 N/A 1.8 mm0.07 in

Aa - Cage-Cone Backface Clearance

 N/A 0.5 mm0.02 in
a - Effective Center Location3 N/A -4.1 mm-0.16 in

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 14700 N3300 lbf
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 56600 N12700 lbf

C0 - Static Radial Rating

 N/A 65800 N14800 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 10100 N2270 lbf

Factors

K - Factor7 N/A 1.45
e - ISO Factor8 N/A 0.4
Y - ISO Factor9 N/A 1.49

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 20.3

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 10.6
Cg - Geometry Factor10 N/A 0.0707
  • 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.
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