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Timken 2582 - 2523D

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2582 - 2523D

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Product Description

Tapered Roller Bearings Tapered Roller Bearings - TDO (Tapered Double Outer) Tapered Roller Bearings - TDO (Tapered Double Outer) Imperial Timken Part Number 2582 - 2523DTimken Part Number 2582 - 2523D, Tapered Roller Bearings - TDO (Tapered Double Outer) ImperialThe 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. Specifications | Dimensions | Abutment and Fillet Dimensions | Basic Load Ratings | Factors


Series 2500
Cone Part Number 2582
Cup Part Number 2523D
Design Units Imperial
Bearing Weight 2.50 lb1.132 Kg
Cage Type Stamped Steel
Ab - Cage-Cone Frontface Clearance 0.06 in1.5 mm


d - Bore 1.2500 in31.750 mm
D - Cup Outer Diameter 2.7500 in69.850 mm
B - Cone Width 0.9983 in25.357 mm
C - Double Cup Width 2.2500 in57.150 mm
T - Bearing Width across Cones 2.6250 in66.675 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 0.14 in3.600 mm
r - Cup Frontface "To Clear" Radius2 0.03 in0.8 mm
db - Cone Backface Backing Diameter 1.73 in43.90 mm
Da - Cup Frontface Backing Diameter 2.56 in64.01 mm
Aa - Cage-Cone Backface Clearance 0.02 in0.5 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 4880 lbf21700 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 32800 lbf146000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 8500 lbf37800 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 2280 lbf10200 N


K - Factor7 2.14
e - ISO Factor8 0.57
Y1 - ISO Factor9 1.19 1.78
Y2 - ISO Factor10 1.78
G1 - Heat Generation Factor (Roller-Raceway)11 23.6
G2 - Heat Generation Factor (Rib-Roller End) 9.63
Cg - Geometry Factor12 0.0656

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