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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 M336948 - M336912  
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Part Number M336948 - M336912, 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
M336900

Cone Part Number
M336948

Cup Part Number
M336912

Design Unit
Inch

Cage Material
Stamped Steel


Dimensions

d - Bore
7.0313 in
178.595 mm

D - Cup Outer Diameter
10.4375 in
265.113 mm

B - Cone Width
2.2500 in
57.150 mm

C - Cup Width
1.5313 in
38.895 mm

T - Bearing Width
2.0313 in
51.595 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
7.56 in
192 mm

db - Cone Backface Backing Diameter
7.68 in
195 mm

Da - Cup Frontface Backing Diameter
9.97 in
253.24 mm

Db - Cup Backface Backing Diameter
9.65 in
245.11 mm

Ab - Cage-Cone Frontface Clearance
0.03 in
0.8 mm

Aa - Cage-Cone Backface Clearance
0.11 in
2.8 mm

a - Effective Center Location3
-0.18 in
-4.6 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
30400 lbf
135000 N

C1 - Dynamic Radial Rating (1 million revolutions)2
117000 lbf
521000 N

C0 - Static Radial Rating
187000 lbf
830000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
17700 lbf
78500 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
1.72

e - ISO Factor2
0.34

Y - ISO Factor3
1.77

G1 - Heat Generation Factor (Roller-Raceway)
606.7

G2 - Heat Generation Factor (Rib-Roller End)
116.6

Cg - Geometry Factor4
0.111
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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