TIMKEN 28980-28921-B Bearing

TIMKEN 28980-28921-B tapered bearings with Flange

Also known as : 28980-28921-B

• Inside Diameter: 59.977 mm
• Outside Diameter: 100 mm
• Width: 9.525 mm
• Basic dynamic load rating: 106 kN
• Basic static load rating: 149 kN

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TIMKEN 28980-28921-B Bearing

Series	28900
model	28980-28921-B
Cone Part Number	28980
Cup Part Number	28921-B
Design Units	Imperial
Cage Type	Stamped Steel
Bearing Weight	0.700 Kg 1.70 lb
Dimensions
d - Bore	59.977 mm 2.3613 in
D - Cup Outer Diameter	100.000 mm 3.9370 in
D1 - Flange Outer Diameter	103.962 mm 4.0930 in
B - Cone Width	25.400 mm 1.0000 in
C - Cup Width	19.845 mm 0.7813 in
C1 - Cup Flange Width	3.970 mm 0.1563 in
T - Bearing Width to Flange	9.525 mm 0.3750 in
T1 - Bearing Width	25.400 mm 1.0000 in
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius	3.600 mm 0.14 in
r - Cup Backface "To Clear" Radius	3.30 mm 0.130 in
da - Cone Frontface Backing Diameter	67.10 mm 2.64 in
db - Cone Backface Backing Diameter	72.90 mm 2.87 in
Da - Cup Frontface Backing Diameter	98.04 mm 3.90 in
Ab - Cage-Cone Frontface Clearance	2.3 mm 0.09 in
Aa - Cage-Cone Backface Clearance	1.3 mm 0.05 in
a - Effective Center Location	-2.5 mm -0.1 in
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)	27500 N 6180 lbf
C1 - Dynamic Radial Rating (1 million revolutions)	106000 N 23800 lbf
C0 - Static Radial Rating	149000 N 33500 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)	20000 N 4500 lbf
Factors
K - Factor	1.37
e - ISO Factor	0.43
Y - ISO Factor	1.41
G1 - Heat Generation Factor (Roller-Raceway)	60.1
G2 - Heat Generation Factor (Rib-Roller End)	24.5
Cg - Geometry Factor	0.103

As TIMKEN bearing distributor, Nodes bearings have TIMKEN 28980-28921-B bearings in stock, TSF (Tapered Single with Flange) Imperial , Tapered roller bearings.

Like the TS bearing design, the TSF design consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft. TSF bearings have flanged cups to facilitate axial location and accurately align seals in through-bored housings.