Menu
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

Cone Part Number

 N/A KLL639249

Design Units

 N/A Imperial

Cage Type

 N/A Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1 N/A 67500 lbf300000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2 N/A 17500 lbf77800 N

Dimensions

d - Cone Bore

 N/A 7.7500 in196.850 mm

B - Cone Width

 N/A 0.9062 in23.017 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius3 N/A 0.06 in1.520 mm

da - Cone Frontface Backing Diameter

 N/A 7.99 in203 mm

db - Cone Backface Backing Diameter

 N/A 8.07 in205 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.14 in3.6 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.04 in1 mm
a - Effective Center Location4 N/A 0.69 in17.5 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)5 N/A 10100 lbf44700 N
C1 - Dynamic Radial Rating (1 million revolutions)6 N/A 38800 lbf172000 N

C0 - Static Radial Rating

 N/A 76300 lbf340000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)7 N/A 7190 lbf32000 N

Factors

K - Factor8 N/A 1.4

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 443

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 230.2
Cg - Geometry Factor9 N/A 0.133
  • 1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 2 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.
  • 3 These maximum fillet radii will be cleared by the bearing corners.
  • 4 Negative value indicates effective center inside cone backface.
  • 5 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 6 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 7 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.
  • 8 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 9 Geometry constant for Lubrication Life Adjustment Factor a3l.
By clicking Submit, you consent to the personal information you provide being used in the manner as described in our Privacy Notice, including access to that information by Timken personnel who may be located outside your home country. In addition, you agree that the CAD drawings are for your personal, one-time use only, and that you will not modify or create any compilation or derivative work using the CAD drawings or distribute or display the CAD drawings on any website or other media.