All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - Single Cones > Tapered Roller Bearings - Single Cones - Metric > Part Number JM718149A  

Part Number JM718149A, Tapered Roller Bearings - Single Cones - Metric

    Download PDF Download PDF   
    border="0" Printable Page  
    Email Email This Page  
    Save To Favorites Save To Favorites
  

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.




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

Specifications

Series
M718100

Cone Part Number
JM718149A

Design Units
METRIC

Cage Type
Stamped Steel

C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1
387000 N
87000 lbf

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2
100000 N
22600 lbf

Full Timken Part Number
M718100
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.


Dimensions

d - Cone Bore
90 mm
3.5433 in

B - Cone Width
34.000 mm
1.3386 in


Abutment and Fillet Dimensions

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

da - Cone Frontface Backing Diameter
99 mm
3.9 in

db - Cone Backface Backing Diameter
112 mm
4.41 in

Ab - Cage-Cone Frontface Clearance
4.6 mm
0.18 in

Aa - Cage-Cone Backface Clearance
1.5 mm
0.06 in

a - Effective Center Location2
-2 mm
-0.08 in
1 These maximum fillet radii will be cleared by the bearing corners.
2 Negative value indicates effective center inside cone backface.


Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)1
57700 N
13000 lbf

C1 - Dynamic Radial Rating (1 million revolutions)2
222000 N
50000 lbf

C0 - Static Radial Rating
313000 N
70500 lbf

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
43900 N
9860 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

G1 - Heat Generation Factor (Roller-Raceway)
138

G2 - Heat Generation Factor (Rib-Roller End)
35.1

Cg - Geometry Factor2
0.0946
1 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
2 Geometry constant for Lubrication Life Adjustment Factor a3l.



 DOWNLOADS 

Tapered Roller Bearing Engineering Information
(PDF, 663KB)

Bearing Life Calculation Tool

Bearing Dimensional Tolerances