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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - TDI (Tapered Double Inner) > Tapered Roller Bearings - TDI (Tapered Double Inner) Imperial > Part Number HM259049DH - HM259010  
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Part Number HM259049DH - HM259010, Tapered Roller Bearings - TDI (Tapered Double Inner) 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  · Spacer

Specifications

Series
HM259000

Cone Part Number
HM259049DH

Cup Part Number
HM259010

Design Unit
Inch

Cage Material
Pin-Type

Note
This part has a non-standard shoulder design. Please email customer CAD for shoulder details to ensure the proper design of mating components.

Related Assembly Number(s)
HM259049DH-902B7


Dimensions

d - Bore
12.5000 in
317.500 mm

D - Cup Outer Diameter
17.6250 in
447.675 mm

B - Double Cone Width
6.2500 in
158.750 mm

C - Cup Width
2.6875 in
68.263 mm

T - Bearing Width across Cups
6.2499 in
158.747 mm


Abutment and Fillet Dimensions

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

r - Cup Backface "To Clear" Radius2
0.130 in
3.30 mm

da - Cone Frontface Backing Diameter
13.39 in
340 mm

Db - Cup Backface Backing Diameter
16.46 in
418.08 mm

Ab - Cage-Cone Frontface Clearance
0.21 in
5.3 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 (One-Row, 90 million revolutions)1
97800 lbf
435000 N

C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)2
656000 lbf
2920000 N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)3
170000 lbf
757000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)4
56000 lbf
249000 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
1.74

e - ISO Factor2
0.33

Y1 - ISO Factor3
2.02

Y2 - ISO Factor4
3

Cg - Geometry Factor5
0.186
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.
5 Geometry constant for Lubrication Life Adjustment Factor a3l.


Spacer

Note
Spacer shows standard nominal .01 radii, actual bearing may vary


 MORE IMAGES 

·  Timken_TRB_2ROWASSY_TDI_39585D-90015-A

·  Timken_TRB_2ROWASSY_TDI_39585D-90015-A3

·  Timken_TRB_2ROWASSY_TDI_39585D-90015-T2



 DOWNLOADS 

Bearing Life Calculation Tool

Bearing Dimensional Tolerances

Tools and Guides for Engineers

TRB TDI Line Drawing
(JPG, 14KB)


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