USED 25580 + 25520 Timken Tapered Roller Bearing and Race

Section: D-17

USED 25580 + 25520 Timken Tapered Roller Bearing and Race

Manufacturer: Timken

Part Number: 25580 / 25520

Condition: Used

Quantity: 1 Set

Specifications

Series 25500

Cone Part Number 25580

Cup Part Number 25520

Design Unit Inch

Bearing Weight 1.2 lb 0.6 Kg

Cage Material Stamped Steel

Dimensions

d - Bore 1.7500 in 44.450 mm

D - Cup Outer Diameter 3.2650 in 82.931 mm

B - Cone Width 1.0000 in 25.400 mm

C - Cup Width 0.7500 in 19.050 mm

T - Bearing Width 0.9375 in 23.813 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 0.140 in 3.6 mm

r - Cup Backface "To Clear" Radius2 0.03 in 0.76 mm

da - Cone Frontface Backing Diameter 1.97 in 50 mm

db - Cone Backface Backing Diameter 2.24 in 57.0 mm

Da - Cup Frontface Backing Diameter 3.05 in 77.00 mm

Db - Cup Backface Backing Diameter 2.91 in 73.91 mm

Ab - Cage-Cone Frontface Clearance 0.06 in 1.5 mm

Aa - Cage-Cone Backface Clearance 0.01 in 0.3 mm

a - Effective Center Location3 -0.25 in -6.4 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 5270 lbf 23500 N

C1 - Dynamic Radial Rating (1 million revolutions)5 20300 lbf 90500 N

C0 - Static Radial Rating 24900 lbf 111000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)6 3020 lbf 13500 N

Factors

K - Factor7 1.74

e - ISO Factor8 0.33

Y - ISO Factor9 1.79

G1 - Heat Generation Factor (Roller-Raceway) 35.2

G2 - Heat Generation Factor (Rib-Roller End) 14.3

Cg - Geometry Factor10 0.0801