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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - TS (Tapered Single) > Tapered Roller Bearings - TS (Tapered Single) Imperial > Part Number 80487 - 80418  
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Part Number 80487 - 80418, Tapered Roller Bearings - TS (Tapered Single) Imperial


This is the most basic and most widely used type of tapered roller bearing. It 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.



Unit of Measure: Imperial Metric Both

Specifications  · Dimensions  · Abutment and Fillet Dimensions  · Basic Load Ratings  · Factors

Specifications

Series
80400

Cone Part Number
80487

Cup Part Number
80418

Design Unit
Inch

Cage Material
Stamped Steel


Dimensions

d - Bore
19.7500 in
501.650 mm

D - Cup Outer Diameter
23.5000 in
596.9 mm

B - Cone Width
1.8125 in
46.038 mm

C - Cup Width
1.6250 in
41.275 mm

T - Bearing Width
2.1250 in
53.975 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.13 in
3.300 mm

r - Cup Backface "To Clear" Radius2
0.130 in
3.30 mm

da - Cone Frontface Backing Diameter
20.31 in
516 mm

db - Cone Backface Backing Diameter
20.43 in
519 mm

Da - Cup Frontface Backing Diameter
22.82 in
579.60 mm

Db - Cup Backface Backing Diameter
22.68 in
576.07 mm

Ab - Cage-Cone Frontface Clearance
0.18 in
4.6 mm

Aa - Cage-Cone Backface Clearance
0.19 in
4.8 mm

a - Effective Center Location3
1.44 in
36.6 mm
1 These maximum fillet radii will be cleared by the bearing corners.
2 These maximum fillet radii will be cleared by the bearing corners.
3 Negative value indicates effective center inside cone backface.


Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)1
40500 lbf
180000 N

C1 - Dynamic Radial Rating (1 million revolutions)2
156000 lbf
695000 N

C0 - Static Radial Rating
384000 lbf
1710000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
24200 lbf
108000 N
1 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
2 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
3 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.


Factors

K - Factor1
1.67

e - ISO Factor2
0.35

Y - ISO Factor3
1.72

G1 - Heat Generation Factor (Roller-Raceway)
4148.9

G2 - Heat Generation Factor (Rib-Roller End)
1071.4

Cg - Geometry Factor4
0.206
1 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
2 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
3 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
4 Geometry constant for Lubrication Life Adjustment Factor a3l.



 DOWNLOADS 

Tapered Roller Bearing Engineering Information
(PDF, 663KB)

Bearing Life Calculation Tool

Bearing Dimensional Tolerances



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