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Part Number 3189 - 3129
Part Number 3189 - 3129, Tapered Roller Bearings - TS (Tapered Single) 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
Series
3100
Cone Part Number
3189
Cup Part Number
3129
Design Unit
Inch
Cage Material
Stamped Steel
Dimensions
d - Bore
1
in
25.40
mm
D - Cup Outer Diameter
3
in
76.2
mm
B - Cone Width
1.1810
in
29.997
mm
C - Cup Width
0.9375
in
23.813
mm
T - Bearing Width
1.1876
in
30.165
mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius
1
0.03
in
0.800
mm
r - Cup Backface "To Clear" Radius
2
0.030
in
0.76
mm
da - Cone Frontface Backing Diameter
1.38
in
35
mm
db - Cone Backface Backing Diameter
1.40
in
35.5
mm
Da - Cup Frontface Backing Diameter
2.74
in
69.10
mm
Db - Cup Backface Backing Diameter
2.56
in
65.02
mm
Ab - Cage-Cone Frontface Clearance
0.06
in
1.5
mm
Aa - Cage-Cone Backface Clearance
0.03
in
0.8
mm
a - Effective Center Location
3
-0.4
in
-10.2
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
5520
lbf
24600
N
C1 - Dynamic Radial Rating (1 million revolutions)
2
21300
lbf
94800
N
C0 - Static Radial Rating
22800
lbf
102000
N
C
a90
- Dynamic Thrust Rating (90 million revolutions)
3
3140
lbf
14000
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
1.76
e - ISO Factor
2
0.33
Y - ISO Factor
3
1.8
G1 - Heat Generation Factor (Roller-Raceway)
23.4
G2 - Heat Generation Factor (Rib-Roller End)
8.76
Cg - Geometry Factor
4
0.0697
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
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