67390 Timken Tapered Roller Bearing Single Cone Only Timken 67390 USA 5-1/4 in ID

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

67300

Cone Part Number

67390

Design Units

Imperial

Cage Type

Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1144000 lbf640000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)237300 lbf166000 N

Dimensions

d - Cone Bore

5.2500 in133.350 mm

B - Cone Width

1.8125 in46.038 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius30.14 in3.600 mm

da - Cone Frontface Backing Diameter

5.67 in144 mm

db - Cone Backface Backing Diameter

5.91 in150 mm

Ab - Cage-Cone Frontface Clearance

0.09 in2.3 mm

Aa - Cage-Cone Backface Clearance

0.13 in3.3 mm
a - Effective Center Location4-0.25 in-6.4 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)521400 lbf95300 N
C1 - Dynamic Radial Rating (1 million revolutions)682600 lbf368000 N

C0 - Static Radial Rating

141000 lbf625000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)712600 lbf56100 N

Factors

K - Factor81.7

G1 - Heat Generation Factor (Roller-Raceway)

383.7

G2 - Heat Generation Factor (Rib-Roller End)

70.1
Cg - Geometry Factor90.122
  • 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.