All Product Types
>
ENGINEERED BEARINGS
>
Tapered Roller Bearings
>
Tapered Roller Bearings - TS (Tapered Single)
>
Tapered Roller Bearings - TS (Tapered Single) Metric
>
Part Number X32048XRA - Y32048XR
Part Number X32048XRA - Y32048XR, Tapered Roller Bearings - TS (Tapered Single) Metric
Download PDF
Download PDF
Printable Page
Email This Page
Save To Favorites
Please wait…
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.
larger image
larger image
Specifications
·
Dimensions
·
Abutment and Fillet Dimensions
·
Basic Load Ratings
·
Factors
Specifications
Series
M249700
Cone Part Number
X32048XRA
Cup Part Number
Y32048XR
Design Unit
Metric
Cage Material
Stamped Steel
Dimensions
d - Bore
241.000
mm
9.4882
in
D - Cup Outer Diameter
360
mm
14.1732
in
B - Cone Width
76
mm
2.9921
in
C - Cup Width
57
mm
2.2441
in
T - Bearing Width
76.000
mm
2.9921
in
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius
1
4.060
mm
0.16
in
r - Cup Backface "To Clear" Radius
2
3.05
mm
0.12
in
da - Cone Frontface Backing Diameter
261
mm
10.28
in
db - Cone Backface Backing Diameter
266
mm
10.47
in
Da - Cup Frontface Backing Diameter
343.41
mm
13.52
in
Db - Cup Backface Backing Diameter
336.04
mm
13.23
in
Ab - Cage-Cone Frontface Clearance
4.1
mm
0.16
in
Aa - Cage-Cone Backface Clearance
7.6
mm
0.3
in
a - Effective Center Location
3
-8.4
mm
-0.33
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
217000
N
48700
lbf
C1 - Dynamic Radial Rating (1 million revolutions)
2
835000
N
188000
lbf
C0 - Static Radial Rating
1630000
N
366000
lbf
C
a90
- Dynamic Thrust Rating (90 million revolutions)
3
123000
N
27700
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
1.76
e - ISO Factor
2
0.33
Y - ISO Factor
3
1.8
G1 - Heat Generation Factor (Roller-Raceway)
1485.4
G2 - Heat Generation Factor (Rib-Roller End)
158.7
Cg - Geometry Factor
4
0.148
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
