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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 3500

Cone Part Number

 N/A 3582

Cup Part Number

 N/A 3526

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 1.5748 in40 mm

D - Cup Outer Diameter

 N/A 3.4375 in87.313 mm

B - Cone Width

 N/A 1.2160 in30.886 mm

C - Cup Width

 N/A 0.9375 in23.813 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 1.85 in47 mm

db - Cone Backface Backing Diameter

 N/A 2.09 in53 mm

Da - Cup Frontface Backing Diameter

 N/A 3.23 in82.00 mm

Db - Cup Backface Backing Diameter

 N/A 3.03 in76.96 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.05 in1.3 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.07 in1.8 mm
a - Effective Center Location3 N/A -0.4 in-10.2 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 6610 lbf29400 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 25500 lbf113000 N

C0 - Static Radial Rating

 N/A 30100 lbf134000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 3460 lbf15400 N

Factors

K - Factor7 N/A 1.91
e - ISO Factor8 N/A 0.31
Y - ISO Factor9 N/A 1.96
Cg - Geometry Factor10 N/A 0.0808
  • 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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