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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 32252  
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Part Number 32252, 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
32252

Cone Part Number
X32252

Cup Part Number
Y32252

Design Unit
Metric

Cage Material
Stamped Steel

Related Assembly Number(s)
32252-90KA1
32252-90WA2
32252-90WA3


Dimensions

d - Bore
260 mm
10.2362 in

D - Cup Outer Diameter
480 mm
18.8976 in

B - Cone Width
130 mm
5.1181 in

C - Cup Width
106 mm
4.1732 in

T - Bearing Width
137 mm
5.3937 in


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
6 mm
0.24 in

r - Cup Backface "To Clear" Radius2
5 mm
0.2 in

da - Cone Frontface Backing Diameter
306 mm
12.05 in

db - Cone Backface Backing Diameter
315 mm
12.4 in

Da - Cup Frontface Backing Diameter
454.5 mm
17.89 in

Db - Cup Backface Backing Diameter
432 mm
17.01 in

Ab - Cage-Cone Frontface Clearance
10.7 mm
0.42 in

Aa - Cage-Cone Backface Clearance
17 mm
0.67 in

a - Effective Center Location3
-22.8 mm
-0.9 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
741000 N
167000 lbf

C1 - Dynamic Radial Rating (1 million revolutions)2
2860000 N
642000 lbf

C0 - Static Radial Rating
4140000 N
930000 lbf

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
546000 N
123000 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
1.36

e - ISO Factor2
0.43

Y - ISO Factor3
1.39

G1 - Heat Generation Factor (Roller-Raceway)
2419.2

G2 - Heat Generation Factor (Rib-Roller End)
141.7

Cg - Geometry Factor4
0.1902
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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