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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 HM252340D  
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Part Number HM252340D, 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
HM252300

Cone Part Number
HM252340D

Design Units
Imperial

Cage Type
Stamped Steel

C1 - Dynamic Radial Rating (1 million revolutions)1
337000 lbf
1500000 N

C0 - Static Radial Rating
455000 lbf
2020000 N
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
5.5000 in
139.700 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.14 in
3.600 mm

da - Cone Frontface Backing Diameter
10.94 in
278 mm

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


Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)1
87400 lbf
389000 N

C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)2
587000 lbf
2610000 N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)3
152000 lbf
677000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)4
49700 lbf
221000 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
0.148
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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