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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 EE243196 - 243251CD  
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Part Number EE243196 - 243251CD, 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
243000

Cone Part Number
EE243196

Cup Part Number
243251CD

Design Unit
Inch

Cage Material
Stamped Steel

Related Assembly Number(s)
EE243196-90127
EE243196-90128
EE243196-902A2
EE243196-902A3
EE243196-902A4
EE243196-902A5
EE243196-902B6
EE243196-902B8
EE243196-903A1


Dimensions

d - Bore
19.6250 in
498.475 mm

D - Cup Outer Diameter
24.9950 in
634.873 mm

B - Cone Width
3.1875 in
80.963 mm

C - Double Cup Width
5.6250 in
142.875 mm

T - Bearing Width across Cones
7.0000 in
177.800 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
20.79 in
528 mm

Da - Cup Frontface Backing Diameter
24.09 in
611.89 mm

Aa - Cage-Cone Backface Clearance
0.27 in
6.9 mm

a - Effective Center Location3
0.75 in
19.1 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
85500 lbf
380000 N

C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)2
574000 lbf
2560000 N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)3
149000 lbf
662000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)4
50200 lbf
223000 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
1.7

e - ISO Factor2
0.34

Y1 - ISO Factor3
1.97

Y2 - ISO Factor4
2.93

Cg - Geometry Factor5
0.235
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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Bearing Dimensional Tolerances

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