Montage of Timken Bearing Products
Batch CAD Cart (0) ▾
  • Cart is empty
  1. Click Here for Batch Download
Request Information Add to CAD Cart
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 M624600

Cone Part Number

 N/A JM624649

Cup Part Number

 N/A JM624610

Design Unit

 N/A Metric

Cage Material

 N/A Stamped Steel

Related Assembly Number(s)

 N/A JM624649-90B02 JM624649-90B05

Dimensions

d - Bore

 N/A 120 mm4.7244 in

D - Cup Outer Diameter

 N/A 180 mm7.0866 in

B - Cone Width

 N/A 36 mm1.4173 in

C - Cup Width

 N/A 26.000 mm1.0236 in

T - Bearing Width

 N/A 36 mm1.4173 in

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 3.560 mm0.14 in
r - Cup Backface "To Clear" Radius2 N/A 1.52 mm0.06 in

da - Cone Frontface Backing Diameter

 N/A 128 mm5.04 in

db - Cone Backface Backing Diameter

 N/A 135 mm5.31 in

Da - Cup Frontface Backing Diameter

 N/A 173.00 mm6.85 in

Db - Cup Backface Backing Diameter

 N/A 166.12 mm6.54 in

Ab - Cage-Cone Frontface Clearance

 N/A 3.3 mm0.13 in

Aa - Cage-Cone Backface Clearance

 N/A 3.3 mm0.13 in
a - Effective Center Location3 N/A 0 mm0 in

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 64000 N14400 lbf
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 247000 N55500 lbf

C0 - Static Radial Rating

 N/A 377000 N84700 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 45300 N10200 lbf

Factors

K - Factor7 N/A 1.41
e - ISO Factor8 N/A 0.41
Y - ISO Factor9 N/A 1.45

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 227

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 61.6
Cg - Geometry Factor10 N/A 0.108
  • 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.