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.
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1
N/A4980000 N1120000 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2
N/A1290000 N290000 lbf
Dimensions
d - Cone Bore
N/A558.8 mm22 in
B - Cone Width
N/A93 mm3.6614 in
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius3
N/A6.4 mm0.25 in
db - Cone Backface Backing Diameter
N/A594 mm23.39 in
Ab - Cage-Cone Frontface Clearance
N/A10.16 mm0.4 in
Aa - Cage-Cone Backface Clearance
N/A6.9 mm0.27 in
a - Effective Center Location4
N/A15.8 mm0.62 in
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)5
N/A741000 N167000 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6
N/A439000 N98800 lbf
Factors
K - Factor7
N/A1.69
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 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.
© 2016 The Timken Company.