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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 30244  
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Part Number 30244, 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
30244

Cone Part Number
X30244M

Cup Part Number
Y30244M

Design Unit
Metric

Cage Material
Stamped Steel


Dimensions

d - Bore
220 mm
8.6614 in

D - Cup Outer Diameter
400 mm
15.748 in

B - Cone Width
65 mm
2.5591 in

C - Cup Width
54 mm
2.126 in

T - Bearing Width
72.000 mm
2.8346 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
245 mm
9.65 in

db - Cone Backface Backing Diameter
281 mm
11.06 in

Da - Cup Frontface Backing Diameter
371 mm
14.61 in

Db - Cup Backface Backing Diameter
364 mm
14.33 in

Ab - Cage-Cone Frontface Clearance
10.9 mm
0.43 in

Aa - Cage-Cone Backface Clearance
6.9 mm
0.27 in

a - Effective Center Location3
5.1 mm
0.2 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
327000 N
73400 lbf

C1 - Dynamic Radial Rating (1 million revolutions)2
1260000 N
283000 lbf

C0 - Static Radial Rating
1560000 N
350000 lbf

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
235000 N
52800 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
1.39

e - ISO Factor2
0.42

Y - ISO Factor3
1.43

G1 - Heat Generation Factor (Roller-Raceway)
1012.1

G2 - Heat Generation Factor (Rib-Roller End)
104

Cg - Geometry Factor4
0.14
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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