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Tapered Roller Bearings - TS (Tapered Single) Imperial
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Tapered Roller Bearings
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Tapered Roller Bearings - TS (Tapered Single)
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Tapered Roller Bearings - TS (Tapered Single) Imperial
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Part Number EE720125 - 720236
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Part Number EE720125 - 720236, 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.
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Unit of Measure:
Imperial
Metric
Both
Specifications
·
Dimensions
·
Abutment and Fillet Dimensions
·
Basic Load Ratings
·
Factors
Specifications
Series
720000
Cone Part Number
EE720125
Cup Part Number
720236
Design Unit
Inch
Cage Material
Pin-Type
Related Assembly Number(s)
EE720125-90018
Dimensions
d - Bore
12.5000
in
317.500
mm
D - Cup Outer Diameter
23.5000
in
596.9
mm
B - Cone Width
5.3750
in
136.525
mm
C - Cup Width
3.8750
in
98.425
mm
T - Bearing Width
5.3750
in
136.525
mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius
1
0.780
in
19.810
mm
r - Cup Backface "To Clear" Radius
2
0.250
in
6.35
mm
da - Cone Frontface Backing Diameter
13.9
in
353
mm
db - Cone Backface Backing Diameter
15.35
in
390
mm
Da - Cup Frontface Backing Diameter
21.61
in
548.89
mm
Db - Cup Backface Backing Diameter
21.02
in
533.91
mm
Ab - Cage-Cone Frontface Clearance
0.38
in
9.7
mm
Aa - Cage-Cone Backface Clearance
0.77
in
19.6
mm
a - Effective Center Location
3
-0.66
in
-16.8
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
193000
lbf
858000
N
C1 - Dynamic Radial Rating (1 million revolutions)
2
744000
lbf
3310000
N
C0 - Static Radial Rating
1030000
lbf
4600000
N
C
a90
- Dynamic Thrust Rating (90 million revolutions)
3
139000
lbf
620000
N
1
Based on 90 x 10
6
revolutions L
10
life, for The Timken Company life calculation method. C
90
and C
a90
are radial and thrust values.
2
Based on 1 x 10
6
revolutions L
10
life, for the ISO life calculation method.
3
Based on 90 x 10
6
revolutions L
10
life, for The Timken Company life calculation method. C
90
and C
a90
are radial and thrust values for a single-row, C
90(2)
is the two-row radial value.
Factors
K - Factor
1
1.38
e - ISO Factor
2
0.42
Y - ISO Factor
3
1.42
G1 - Heat Generation Factor (Roller-Raceway)
3160
G2 - Heat Generation Factor (Rib-Roller End)
183
Cg - Geometry Factor
4
0.205
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.
VIEW CAD DRAWING
·
3D
·
2D Sectional View
·
2D Sales Drawing
DOWNLOADS
Tapered Roller Bearing Engineering Information
(PDF, 663KB)
Bearing Life Calculation Tool
Bearing Dimensional Tolerances
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