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Tapered Roller Bearings - TSL (DUO-FACE® Plus Seal) Imperial
Unit of Measure

Specifications

Series

 N/A M12600

Cone Part Number

 N/A M12649

Cup Part Number

 N/A M12610

Seal Part Number

 N/A M12600LA

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 0.8437 in21.430 mm

D - Cup Outer Diameter

 N/A 1.9687 in50.005 mm

B - Cone Width

 N/A 0.7200 in18.288 mm

C - Cup Width

 N/A 0.5500 in13.970 mm

T - Bearing Width

 N/A 0.69 in17.526 mm

T1 - Total Width

 N/A 0.765 in19.43 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.050 in1.270 mm
r - Cup Backface "To Clear" Radius2 N/A 0.050 in1.27 mm

da - Cone Frontface Backing Diameter

 N/A 1.08 in27.5 mm

db - Cone Backface Backing Diameter

 N/A 1.16 in29.5 mm

Da - Cup Frontface Backing Diameter

 N/A 1.83 in46.48 mm

Db - Cup Backface Backing Diameter

 N/A 1.73 in43.94 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.07 in1.8 mm

Aa - Cage-Cone Backface Clearance

 N/A -0.01 in-0.3 mm
a - Effective Center Location3 N/A -0.25 in-6.4 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 3040 lbf13500 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 11700 lbf52200 N

C0 - Static Radial Rating

 N/A 9780 lbf43500 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 1450 lbf6440 N

Factors

K - Factor7 N/A 2.1
e - ISO Factor8 N/A 0.28
Y - ISO Factor9 N/A 2.16
Y1 - ISO Factor10 N/A 2.43
Y2 - ISO Factor11 N/A 3.61

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 9.1

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 5.63
Cg - Geometry Factor12 N/A 0.0479
  • 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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 11 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 12 Geometry constant for Lubrication Life Adjustment Factor a3l.
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