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Tapered Roller Bearings - 2TS-IM (Matched Bearing Assembly, Indirect Mount)
Unit of Measure

Specifications

Cone Part Number

 N/A LL575349

Cup Part Number

 N/A LL575310

Inner Spacer Part Number

 N/A LL575349XA

Outer Spacer Part Number

 N/A LL575310EB

Design Unit

 N/A Inch

Dimensions

d - Bore

 N/A 21.2500 in539.750 mm

D - Cup Outer Diameter

 N/A 25.0000 in635.000 mm

T - Width

 N/A 4.75 in120.65 mm

C - Width

 N/A 3.75 in95.25 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.25 in6.35 mm
r - Cup Backface "To Clear" Radius2 N/A 0.06 in1.5 mm

db - Cone Backface Backing Diameter

 N/A 22.2 in564 mm

Da - Cup Frontface Backing Diameter

 N/A 24.73 in628.10 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 52000 lbf231000 N
C1 - Dynamic Radial Rating (1 million revolutions)4 N/A 349000 lbf1550000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)5 N/A 36100 lbf161000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6 N/A 90500 lbf403000 N

Factors

K - Factor7 N/A 1.44
e - ISO Factor8 N/A 0.41
Y1 - ISO Factor9 N/A 1.66
Y2 - ISO Factor10 N/A 2.48
  • 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 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 4 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 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 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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
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