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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 95000

Cone Part Number

 N/A 95475

Cup Part Number

 N/A 95975

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 4.7500 in120.650 mm

D - Cup Outer Diameter

 N/A 9 3/4 in247.650 mm

B - Cone Width

 N/A 2.5 in63.5 mm

C - Cup Width

 N/A 1.9375 in49.213 mm

T - Bearing Width

 N/A 2.5000 in63.500 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 0.130 in3.30 mm

da - Cone Frontface Backing Diameter

 N/A 5.39 in137 mm

db - Cone Backface Backing Diameter

 N/A 5.87 in149 mm

Da - Cup Frontface Backing Diameter

 N/A 8.58 in217.90 mm

Db - Cup Backface Backing Diameter

 N/A 8.43 in214.12 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.19 in4.8 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.22 in5.6 mm
a - Effective Center Location3 N/A -0.55 in-14 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 36700 lbf163000 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 141000 lbf629000 N

C0 - Static Radial Rating

 N/A 209000 lbf931000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 23200 lbf103000 N

Factors

K - Factor7 N/A 1.58
e - ISO Factor8 N/A 0.37
Y - ISO Factor9 N/A 1.62

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 453.9

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 59.4
Cg - Geometry Factor10 N/A 0.132
  • 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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