Timken 28980 – 28921-B
Tapered Roller Bearings - TSF (Tapered Single with Flange) Imperial
(BRAND)：TIMKEN
(Availability)：In Stock
(EMAIL)：info@noksbearings.com
Detailed data of
28980 – 28921-B
Specifications
Series
28900
Cone Part Number
28980
Cup Part Number
28921-B
Design Unit
Inch
Cage Material
Stamped Steel
Related Assembly Number(s)
28980-90060
Dimensions
d - Bore
59.977 mm
D - Cup Outer Diameter
100 mm
D1 - Flange Outer Diameter
103.962 mm
B - Cone Width
25.400 mm
C - Cup Width
19.845 mm
C1 - Cup Flange Width
3.970 mm
T1 - Bearing Width to Flange
9.525 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
67 mm
db - Cone Backface Backing Diameter
73 mm
Da - Cup Frontface Backing Diameter
98.04 mm
Ab - Cage-Cone Frontface Clearance
2.3 mm
Aa - Cage-Cone Backface Clearance
1.3 mm
a - Effective Center Location3
-2.5 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)4
27500 N
C1 - Dynamic Radial Rating (1 million revolutions)5
106000 N
C0 - Static Radial Rating
149000 N
C6
20000 N
Factors
K - Factor7
1.37
e - ISO Factor8
0.43
Y - ISO Factor9
1.41
G1 - Heat Generation Factor (Roller-Raceway)
60.1
G2 - Heat Generation Factor (Rib-Roller End)
24.5
Cg - Geometry Factor10
0.103
Similar to product
28980 – 28921-B
