All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - Single Cones > Tapered Roller Bearings - Single Cones - Metric > Part Number LM377449H  

Part Number LM377449H, Tapered Roller Bearings - Single Cones - Metric

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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

Cone Part Number
LM377449H

Design Units
METRIC

C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1
4980000 N
1120000 lbf

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2
1290000 N
290000 lbf
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
558.8 mm
22 in

B - Cone Width
93 mm
3.6614 in


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
6.4 mm
0.25 in

db - Cone Backface Backing Diameter
594 mm
23.39 in

Ab - Cage-Cone Frontface Clearance
10.16 mm
0.4 in

Aa - Cage-Cone Backface Clearance
6.9 mm
0.27 in

a - Effective Center Location2
15.8 mm
0.62 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
741000 N
167000 lbf

Ca90 - Dynamic Thrust Rating (90 million revolutions)2
439000 N
98800 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 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
1.69
1 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.



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Tapered Roller Bearing Engineering Information
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Bearing Life Calculation Tool

Bearing Dimensional Tolerances