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/A376000 N84600 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2
N/A97600 N21900 lbf
Full Timken Part Number
N/A32214
Dimensions
d - Cone Bore
N/A70 mm2.7559 in
B - Cone Width
N/A31.000 mm1.2205 in
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius3
N/A2.030 mm0.08 in
da - Cone Frontface Backing Diameter
N/A79 mm3.11 in
db - Cone Backface Backing Diameter
N/A82 mm3.23 in
Ab - Cage-Cone Frontface Clearance
N/A4.1 mm0.16 in
Aa - Cage-Cone Backface Clearance
N/A2.8 mm0.11 in
a - Effective Center Location4
N/A-4.6 mm-0.18 in
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)5
N/A56000 N12600 lbf
C1 - Dynamic Radial Rating (1 million revolutions)6
N/A216000 N48600 lbf
C0 - Static Radial Rating
N/A224000 N50400 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)7
N/A40300 N9060 lbf
Factors
K - Factor8
N/A1.39
G1 - Heat Generation Factor (Roller-Raceway)
N/A81.4
G2 - Heat Generation Factor (Rib-Roller End)
N/A25.6
Cg - Geometry Factor9
N/A0.0779
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.