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Part Number NA476
Part Number NA476, Tapered Roller Bearings - Single Cones - Imperial
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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
Design Units
Imperial
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)
1
56100
lbf
250000
N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)
2
14600
lbf
64700
N
1
Based on 1 x 10
6
revolutions L
10
life, for the ISO life calculation method.
2
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.
Dimensions
d - Cone Bore
2.3622
in
60
mm
B - Cone Width
1.2813
in
32.545
mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius
1
0.14
in
3.5
mm
db - Cone Backface Backing Diameter
2.99
in
76
mm
Ab - Cage-Cone Frontface Clearance
-0.064065
in
-1.62725
mm
Aa - Cage-Cone Backface Clearance
0.12813
in
3.2545
mm
a - Effective Center Location
2
-0.16
in
-4.1
mm
1
These maximum fillet radii will be cleared by the bearing corners.
2
Negative value indicates effective center inside cone backface.
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)
1
8360
lbf
37200
N
C
a90
- Dynamic Thrust Rating (90 million revolutions)
2
5500
lbf
24500
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 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
1.52
1
These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
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