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Tapered Roller Bearings - Single Cones - Imperial
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Tapered Roller Bearings
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Tapered Roller Bearings - Single Cones
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Tapered Roller Bearings - Single Cones - Imperial
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Part Number 1990X
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Part Number 1990X, Tapered Roller Bearings - Single Cones - 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
1900
Cone Part Number
1990X
Design Units
Imperial
Cage Type
Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)
1
18900
lbf
84200
N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)
2
4910
lbf
21800
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
15/16
in
23.813
mm
B - Cone Width
0.8400
in
21.336
mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius
1
0.14
in
3.600
mm
da - Cone Frontface Backing Diameter
1.16
in
29.5
mm
db - Cone Backface Backing Diameter
1.42
in
36
mm
Ab - Cage-Cone Frontface Clearance
0.08
in
2
mm
Aa - Cage-Cone Backface Clearance
0.08
in
2
mm
a - Effective Center Location
2
-0.31
in
-7.9
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
2820
lbf
12500
N
C1 - Dynamic Radial Rating (1 million revolutions)
2
10900
lbf
48400
N
C0 - Static Radial Rating
11300
lbf
50200
N
C
a90
- Dynamic Thrust Rating (90 million revolutions)
3
1590
lbf
7080
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
1.77
Cg - Geometry Factor
2
0.0565
1
These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
2
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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©
The Timken Company. ©
The Timken Company.
©
The Timken Company.