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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 5500

Cone Part Number

 N/A 5577

Cup Part Number

 N/A 5535V

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 2.1250 in53.975 mm

D - Cup Outer Diameter

 N/A 4 13/16 in122.238 mm

B - Cone Width

 N/A 1.7230 in43.764 mm

C - Cup Width

 N/A 1.4375 in36.513 mm

T - Bearing Width

 N/A 1.7187 in43.655 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.050 in1.300 mm
r - Cup Backface "To Clear" Radius2 N/A 0.130 in3.30 mm

da - Cone Frontface Backing Diameter

 N/A 2.64 in67 mm

db - Cone Backface Backing Diameter

 N/A 2.72 in69 mm

Da - Cup Frontface Backing Diameter

 N/A 4.60 in116.10 mm

Db - Cup Backface Backing Diameter

 N/A 4.17 in105.92 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.08 in2 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.07 in1.8 mm
a - Effective Center Location3 N/A -0.48 in-12.2 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 13800 lbf61300 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 53200 lbf237000 N

C0 - Static Radial Rating

 N/A 73500 lbf327000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 8460 lbf37600 N

Factors

K - Factor7 N/A 1.63
e - ISO Factor8 N/A 0.36
Y - ISO Factor9 N/A 1.67
Cg - Geometry Factor10 N/A 0.0825
  • 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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