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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - Single Cups > Tapered Roller Bearings - Single Cups - Metric > Part Number Y32311-BM  
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Part Number Y32311-BM, Tapered Roller Bearings - Single Cups - 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  · Factors

Specifications

Series

32311-B

Cup Part Number

Y32311-BM

Design Units

METRIC


Dimensions

D - Cup Outer Diameter

120 mm
4.7244
in

C - Cup Width

35 mm
1.378
in


Abutment and Fillet Dimensions

r - Cup Backface "To Clear" Radius1

2.03 mm
0.08
in

Da - Cup Frontface Backing Diameter

115.06 mm
4.53
in

Db - Cup Backface Backing Diameter

101.09 mm
3.98
in
1 These maximum fillet radii will be cleared by the bearing corners.


Factors

K - Factor1

1.07

e - ISO Factor2

0.55

Y - ISO Factor3

1.1

G1 - Heat Generation Factor (Roller-Raceway)

78.8

G2 - Heat Generation Factor (Rib-Roller End)

24.6

Cg - Geometry Factor4

0.0794
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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