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 JW7000

Cone Part Number

 N/A JW7049

Cup Part Number

 N/A JW7010AX

Design Unit

 N/A Metric

Cage Material

 N/A Stamped Steel

Related Assembly Number(s)

 N/A JW7049-90NB7

Dimensions

d - Bore

 N/A 70 mm2.7559 in

D - Cup Outer Diameter

 N/A 140 mm5.5118 in

B - Cone Width

 N/A 35.500 mm1.3976 in

C - Cup Width

 N/A 27 mm1.063 in

T - Bearing Width

 N/A 39.000 mm1.5354 in

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 3.050 mm0.12 in
r - Cup Backface "To Clear" Radius2 N/A 0.25 mm0.010 in

da - Cone Frontface Backing Diameter

 N/A 82 mm3.23 in

db - Cone Backface Backing Diameter

 N/A 95 mm3.74 in

Da - Cup Frontface Backing Diameter

 N/A 133.35 mm5.25 in

Db - Cup Backface Backing Diameter

 N/A 119.13 mm4.69 in

Ab - Cage-Cone Frontface Clearance

 N/A 5.3 mm0.21 in

Aa - Cage-Cone Backface Clearance

 N/A 4.3 mm0.17 in
a - Effective Center Location3 N/A 8.6 mm0.34 in

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 62600 N14100 lbf
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 241000 N54200 lbf

C0 - Static Radial Rating

 N/A 257000 N57800 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 92800 N20900 lbf

Factors

K - Factor7 N/A 0.67
e - ISO Factor8 N/A 0.87
Y - ISO Factor9 N/A 0.69

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 85.2

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 23.4
Cg - Geometry Factor10 N/A 0.0984
  • 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.