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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.

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Unit of Measure

Specifications

Series

N/A L69300

Cone Part Number

N/A JL69348

Cup Part Number

N/A JL69310P

Design Units

N/A METRIC

Bearing Weight

N/A 0.2 Kg0.4 lb

Cage Type

N/A Stamped Steel

Dimensions

d - Bore

N/A 38.000 mm1.4961 in

D - Cup Outer Diameter

N/A 63.000 mm2.4803 in

B - Cone Width

N/A 17.000 mm0.6693 in

C - Cup Width

N/A 13.500 mm0.5315 in

T - Bearing Width

N/A 17.000 mm0.6693 in

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 3.300 mm0.13 in
r - Cup Backface "To Clear" Radius2 N/A 1.27 mm0.050 in

da - Cone Frontface Backing Diameter

N/A 42.42 mm1.67 in

db - Cone Backface Backing Diameter

N/A 46.48 mm1.83 in

Da - Cup Frontface Backing Diameter

N/A 60.96 mm2.40 in

Db - Cup Backface Backing Diameter

N/A 55.88 mm2.20 in

Ab - Cage-Cone Frontface Clearance

N/A 1.8 mm0.07 in

Aa - Cage-Cone Backface Clearance

N/A 0 mm0 in
a - Effective Center Location3 N/A -2.3 mm-0.09 in

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 13200 N2970 lbf
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 51000 N11500 lbf

C0 - Static Radial Rating

N/A 55000 N12400 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 9410 N2120 lbf

Factors

K - Factor7 N/A 1.4
e - ISO Factor8 N/A 0.42
Y - ISO Factor9 N/A 1.44

G1 - Heat Generation Factor (Roller-Raceway)

N/A 18.4

G2 - Heat Generation Factor (Rib-Roller End)

N/A 13.6
Cg - Geometry Factor10 N/A 0.0692
  • 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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