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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - TNA (Tapered Double, non-adjustable) Imperial > Part Number LM251649NW - LM251610D  
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Part Number LM251649NW - LM251610D, Tapered Roller Bearings - TNA (Tapered Double, non-adjustable) Imperial






Unit of Measure: Imperial Metric Both

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

Specifications

Cone Part Number
LM251649NW

Cup Part Number
LM251610D

Design Unit
Inch


Dimensions

d - Bore
10 1/2 in
266.7 mm

D - Cup Outer Diameter
13.875 in
352.425 mm

T - Bearing Width across Cones
4.25 in
107.95 mm

C - Double Cup Width
3.25 in
82.55 mm


Abutment and Fillet Dimensions

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

r - Cup Backface "To Clear" Radius2
0.06 in
1.524 mm

db - Cone Backface Backing Diameter
11.46 in
291.0 mm

Da - Cup Frontface Backing Diameter
13.39 in
340.106 mm
1 These maximum fillet radii will be cleared by the bearing corners.
2 These maximum fillet radii will be cleared by the bearing corners.


Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)1
33000 lbf
147000 N

C1 - Dynamic Radial Rating (1 million revolutions)2
221000 lbf
985000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
18000 lbf
80100 N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)4
57400 lbf
255000 N
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.
4 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
1.83

e - ISO Factor2
0.32

Y1 - ISO Factor3
2.12

Y2 - ISO Factor4
3.15
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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.


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 DOWNLOADS 

Bearing Life Calculation Tool

Bearing Dimensional Tolerances

Tools and Guides for Engineers


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