Timken 25580 – 25521-B
Tapered Roller Bearings - TSF (Tapered Single with Flange) Imperial
(BRAND)：TIMKEN
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Detailed data of
25580 – 25521-B
Specifications
Series
25500
Cone Part Number
25580
Cup Part Number
25521-B
Design Unit
Inch
Cage Material
Stamped Steel
Dimensions
d - Bore
44.450 mm
D - Cup Outer Diameter
83.058 mm
D1 - Flange Outer Diameter
86.919 mm
B - Cone Width
25.400 mm
C - Cup Width
19.050 mm
C1 - Cup Flange Width
3.970 mm
T1 - Bearing Width to Flange
8.733 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1
3.600 mm
r - Cup Backface "To Clear" Radius2
3.30 mm
da - Cone Frontface Backing Diameter
50 mm
db - Cone Backface Backing Diameter
57 mm
Da - Cup Frontface Backing Diameter
80.01 mm
Ab - Cage-Cone Frontface Clearance
1.5 mm
Aa - Cage-Cone Backface Clearance
0.3 mm
a - Effective Center Location3
-6.4 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)4
23500 N
C1 - Dynamic Radial Rating (1 million revolutions)5
90500 N
C0 - Static Radial Rating
111000 N
C6
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
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