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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - Double Cones > Tapered Roller Bearings - Double Tapered Cones - Imperial > Part Number M252338DW  
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Part Number M252338DW, Tapered Roller Bearings - Double Tapered Cones - Imperial


TDI bearings have a one-piece double inner race and two single outer races and are typically supplied complete with an outer race spacer as a pre-set assembly. The bearing can be used at fixed positions on rotation shaft applications. For rotating housing application it can be used to float on the stationary shaft.



Unit of Measure: Imperial Metric Both

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

Specifications

Series
M252300

Cone Part Number
M252338DW

Design Units
Imperial

Cage Type
Stamped Steel

C1 - Dynamic Radial Rating (1 million revolutions)1
258000 lbf
1150000 N

C0 - Static Radial Rating
455000 lbf
2030000 N

Note
This part has a non-standard shoulder design. Please email customer CAD for shoulder details to ensure the proper design of mating components.
1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.


Dimensions

d - Cone Bore
9.8750 in
250.825 mm

B - Double Cone Width
5.3750 in
136.525 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.13 in
3.300 mm

da - Cone Frontface Backing Diameter
10.87 in
276.1 mm

Ab - Cage-Cone Frontface Clearance
0.19 in
4.8 mm
1 These maximum fillet radii will be cleared by the bearing corners.


Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)1
67000 lbf
298000 N

C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)2
450000 lbf
2000000 N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)3
117000 lbf
519000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)4
38100 lbf
170000 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
1.76

Cg - Geometry Factor2
0.159
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.



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