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Part Number 32252
Part Number 32252, Tapered Roller Bearings - TS (Tapered Single) Metric
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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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Specifications
·
Dimensions
·
Abutment and Fillet Dimensions
·
Basic Load Ratings
·
Factors
Specifications
Series
32252
Cone Part Number
X32252
Cup Part Number
Y32252
Design Unit
Metric
Cage Material
Stamped Steel
Related Assembly Number(s)
32252-90KA1
32252-90WA2
32252-90WA3
Dimensions
d - Bore
260
mm
10.2362
in
D - Cup Outer Diameter
480
mm
18.8976
in
B - Cone Width
130
mm
5.1181
in
C - Cup Width
106
mm
4.1732
in
T - Bearing Width
137
mm
5.3937
in
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius
1
6
mm
0.24
in
r - Cup Backface "To Clear" Radius
2
5
mm
0.2
in
da - Cone Frontface Backing Diameter
306
mm
12.05
in
db - Cone Backface Backing Diameter
315
mm
12.4
in
Da - Cup Frontface Backing Diameter
454.5
mm
17.89
in
Db - Cup Backface Backing Diameter
432
mm
17.01
in
Ab - Cage-Cone Frontface Clearance
10.7
mm
0.42
in
Aa - Cage-Cone Backface Clearance
17
mm
0.67
in
a - Effective Center Location
3
-22.8
mm
-0.9
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
741000
N
167000
lbf
C1 - Dynamic Radial Rating (1 million revolutions)
2
2860000
N
642000
lbf
C0 - Static Radial Rating
4140000
N
930000
lbf
C
a90
- Dynamic Thrust Rating (90 million revolutions)
3
546000
N
123000
lbf
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
1.36
e - ISO Factor
2
0.43
Y - ISO Factor
3
1.39
G1 - Heat Generation Factor (Roller-Raceway)
2419.2
G2 - Heat Generation Factor (Rib-Roller End)
141.7
Cg - Geometry Factor
4
0.1902
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 ISO View
·
2D Sales Drawing
DOWNLOADS
Tapered Roller Bearing Engineering Information
(PDF, 663KB)
Bearing Life Calculation Tool
Bearing Dimensional Tolerances
