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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - TDO (Tapered Double Outer) > Tapered Roller Bearings - TDO (Tapered Double Outer) Imperial > Part Number EE649239 - 649311CD  
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Part Number EE649239 - 649311CD, Tapered Roller Bearings - TDO (Tapered Double Outer) Imperial


The configuration of the TDO provides a wide effective bearing spread, making it ideal for applications in which overturning moments are a significant load component. TDO bearings can be used in fixed positions or allowed to float in the housing bore.



Unit of Measure: Imperial Metric Both

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

Specifications

Series
649000

Cone Part Number
EE649239

Cup Part Number
649311CD

Design Unit
Inch

Cage Material
Pin-Type

Related Assembly Number(s)
EE649239-90072
EE649239-90073
EE649239-902A1


Dimensions

d - Bore
23.9260 in
607.720 mm

D - Cup Outer Diameter
31.0000 in
787.4 mm

B - Cone Width
3.6875 in
93.663 mm

C - Double Cup Width
6.2500 in
158.750 mm

T - Bearing Width across Cones
8.1250 in
206.375 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
1.5 mm

db - Cone Backface Backing Diameter
25.28 in
642 mm

Da - Cup Frontface Backing Diameter
30.02 in
762.50 mm

Aa - Cage-Cone Backface Clearance
0.34 in
8.6 mm

a - Effective Center Location3
1.24 in
31.5 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.
3 Negative value indicates effective center inside cone backface.


Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)1
677000 N

C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)2
1020000 lbf
4550000 N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)3
265000 lbf
1180000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)4
96600 lbf
430000 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
1.58

e - ISO Factor2
0.37

Y1 - ISO Factor3
1.82

Y2 - ISO Factor4
2.71

Cg - Geometry Factor5
0.279
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.


 MORE IMAGES 

·  Timken_TRB_2ROWASSY_TDO_438-90092-A

·  Timken_TRB_2ROWASSY_TDO_438-90092-A3

·  Timken_TRB_2ROWASSY_TDO_438-90092-T2



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