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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 EE217056 - 217112W  
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Part Number EE217056 - 217112W, 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
217000

Cone Part Number
EE217056

Cup Part Number
217112W

Design Unit
Inch

Cage Material
Stamped Steel


Dimensions

d - Bore
5.7500 in
146.050 mm

D - Cup Outer Diameter
11.25 in
285.750 mm

B - Cone Width
2.875 in
73.025 mm

C - Cup Width
2.1875 in
55.563 mm

T - Bearing Width
3.0001 in
76.203 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.25 in
6.35 mm

r - Cup Backface "To Clear" Radius2
0.250 in
6.35 mm

da - Cone Frontface Backing Diameter
6.54 in
166.1 mm

db - Cone Backface Backing Diameter
6.93 in
176 mm

Da - Cup Frontface Backing Diameter
10.30 in
261.60 mm

Db - Cup Backface Backing Diameter
9.88 in
250.95 mm

Ab - Cage-Cone Frontface Clearance
0.11 in
2.8 mm

Aa - Cage-Cone Backface Clearance
0.57 in
14.5 mm

a - Effective Center Location3
-0.59 in
-15 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
41700 lbf
185000 N

C1 - Dynamic Radial Rating (1 million revolutions)2
161000 lbf
715000 N

C0 - Static Radial Rating
237000 lbf
1060000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
28700 lbf
128000 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
1.45

e - ISO Factor2
0.4

Y - ISO Factor3
1.49

G1 - Heat Generation Factor (Roller-Raceway)
556.3

G2 - Heat Generation Factor (Rib-Roller End)
71.8

Cg - Geometry Factor4
0.114
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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