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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - TS (Tapered Single) > Tapered Roller Bearings - TS (Tapered Single) Metric > Part Number JM714249A - JM714210  
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Part Number JM714249A - JM714210, Tapered Roller Bearings - TS (Tapered Single) Metric


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: Imperial Metric Both

Specifications  · Dimensions  · Abutment and Fillet Dimensions  · Basic Load Ratings  · Factors

Specifications

Series
M714200

Cone Part Number
JM714249A

Cup Part Number
JM714210

Design Unit
Metric

Cage Material
Stamped Steel


Dimensions

d - Bore
75 mm
2.9528 in

D - Cup Outer Diameter
120 mm
4.7244 in

B - Cone Width
29.500 mm
1.1614 in

C - Cup Width
25.000 mm
0.9843 in

T - Bearing Width
31.000 mm
1.2205 in


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
6.100 mm
0.24 in

r - Cup Backface "To Clear" Radius2
2.54 mm
0.1 in

da - Cone Frontface Backing Diameter
83 mm
3.27 in

db - Cone Backface Backing Diameter
94 mm
3.7 in

Da - Cup Frontface Backing Diameter
115.10 mm
4.56 in

Db - Cup Backface Backing Diameter
107.95 mm
4.25 in

Ab - Cage-Cone Frontface Clearance
3.3 mm
0.13 in

Aa - Cage-Cone Backface Clearance
1.5 mm
0.06 in

a - Effective Center Location3
-2 mm
-0.08 in
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.


Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)1
41300 N
9290 lbf

C1 - Dynamic Radial Rating (1 million revolutions)2
159000 N
35800 lbf

C0 - Static Radial Rating
229000 N
51500 lbf

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
31400 N
7070 lbf
1 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
2 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
3 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.


Factors

K - Factor1
1.31

e - ISO Factor2
0.44

Y - ISO Factor3
1.35

G1 - Heat Generation Factor (Roller-Raceway)
95

G2 - Heat Generation Factor (Rib-Roller End)
32.8

Cg - Geometry Factor4
0.122
1 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
2 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
3 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
4 Geometry constant for Lubrication Life Adjustment Factor a3l.



 DOWNLOADS 

Tapered Roller Bearing Engineering Information
(PDF, 663KB)

Bearing Life Calculation Tool

Bearing Dimensional Tolerances


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