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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - TS (Tapered Single) > Tapered Roller Bearings - TS (Tapered Single) Metric > Part Number 32248  
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Part Number 32248, Tapered Roller Bearings - TS (Tapered Single) Metric



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

32248

Cone Part Number

X32248

Cup Part Number

Y32248

Design Unit

Metric

Cage Material

Stamped Steel

Related Assembly Number(s)

32248-90KA1


Dimensions

d - Bore

240 mm
9.4488
in

D - Cup Outer Diameter

440 mm
17.3228
in

B - Cone Width

120 mm
4.7244
in

C - Cup Width

100 mm
3.937
in

T - Bearing Width

127 mm
5.0000
in


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1

5 mm
0.200
in

r - Cup Backface "To Clear" Radius2

4 mm
0.16
in

da - Cone Frontface Backing Diameter

280 mm
11.02
in

db - Cone Backface Backing Diameter

293 mm
11.54
in

Da - Cup Frontface Backing Diameter

415 mm
16.34
in

Db - Cup Backface Backing Diameter

394 mm
15.51
in

Ab - Cage-Cone Frontface Clearance

8.6 mm
0.34
in

Aa - Cage-Cone Backface Clearance

10.9 mm
0.43
in

a - Effective Center Location3

-17.5 mm
-0.69
in
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

566000 N
127000
lbf

C1 - Dynamic Radial Rating (1 million revolutions)2

2180000 N
491000
lbf

C0 - Static Radial Rating

3680000 N
828000
lbf

Ca90 - Dynamic Thrust Rating (90 million revolutions)3

422000 N
94800
lbf
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

1.34

e - ISO Factor2

0.44

Y - ISO Factor3

1.38

G1 - Heat Generation Factor (Roller-Raceway)

2021.3

G2 - Heat Generation Factor (Rib-Roller End)

103

Cg - Geometry Factor4

0.18
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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