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Tapered Roller Bearings - 2S (Matched Bearing Assembly, with snap ring spacer)
Unit of Measure

Specifications

Cone Part Number

 N/A 15125

Cup Part Number

 N/A 15245

Inner Spacer Part Number

 N/A X1S-15125

Outer Spacer Part Number

 N/A K159808R

Design Unit

 N/A Inch

Dimensions

d - Bore

 N/A 1.2500 in31.750 mm

D - Cup Outer Diameter

 N/A 2.4409 in61.999 mm

T - Width

 N/A 1.8250 in46.355 mm

C - Width

 N/A 1.4500 in36.830 mm

Snap Ring Diameter

 N/A 2.54 in64.52 mm

Snap Ring Width

 N/A 0.33 in8.26 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 0.050 in1.27 mm

db - Cone Backface Backing Diameter

 N/A 1.67 in42.5 mm

Da - Cup Frontface Backing Diameter

 N/A 2.30 in58.42 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)

 N/A 3490 lbf15500 N
C1 - Dynamic Radial Rating (1 million revolutions)3 N/A 23400 lbf104000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)4 N/A 2090 lbf9310 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 6080 lbf27000 N

Factors

K - Factor6 N/A 1.67
e - ISO Factor7 N/A 0.35
Y1 - ISO Factor8 N/A 1.93
Y2 - ISO Factor9 N/A 2.87
  • 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 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 4 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.
  • 5 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.
  • 6 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 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.
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