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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 EE203136 - 203190  
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Part Number EE203136 - 203190, 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
203000

Cone Part Number
EE203136

Cup Part Number
203190

Design Unit
Inch

Cage Material
Stamped Steel

Related Assembly Number(s)
EE203136-90013


Dimensions

d - Bore
13.6250 in
346.075 mm

D - Cup Outer Diameter
19.0000 in
482.600 mm

B - Cone Width
2.5 in
63.5 mm

C - Cup Width
1.7500 in
44.450 mm

T - Bearing Width
2.6250 in
66.675 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.270 in
6.900 mm

r - Cup Backface "To Clear" Radius2
0.270 in
6.86 mm

da - Cone Frontface Backing Diameter
14.41 in
366 mm

db - Cone Backface Backing Diameter
14.8 in
376 mm

Da - Cup Frontface Backing Diameter
18.00 in
457.20 mm

Db - Cup Backface Backing Diameter
17.68 in
449.07 mm

Ab - Cage-Cone Frontface Clearance
0.29 in
7.4 mm

Aa - Cage-Cone Backface Clearance
0.57 in
14.5 mm

a - Effective Center Location3
0.64 in
16.3 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
59900 lbf
266000 N

C1 - Dynamic Radial Rating (1 million revolutions)2
231000 lbf
1030000 N

C0 - Static Radial Rating
398000 lbf
1770000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
42700 lbf
190000 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
1.4

e - ISO Factor2
0.42

Y - ISO Factor3
1.44

Cg - Geometry Factor4
0.178
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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