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Tapered Roller Bearings - Double Tapered Cones - Imperial
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Tapered Roller Bearings - Double Tapered Cones - Imperial
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Part Number 389DE
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Part Number 389DE, Tapered Roller Bearings - Double Tapered Cones - Imperial
TDI bearings have a one-piece double inner race and two single outer races and are typically supplied complete with an outer race spacer as a pre-set assembly. The bearing can be used at fixed positions on rotation shaft applications. For rotating housing application it can be used to float on the stationary shaft.
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Unit of Measure:
Imperial
Metric
Both
Specifications
·
Dimensions
·
Abutment and Fillet Dimensions
·
Basic Load Ratings
·
Factors
Specifications
Series
385
Cone Part Number
389DE
Design Units
Imperial
Cage Type
Stamped Steel
C1 - Dynamic Radial Rating (1 million revolutions)
1
20500
lbf
91000
N
C0 - Static Radial Rating
24100
lbf
107000
N
1
Based on 1 x 10
6
revolutions L
10
life, for the ISO life calculation method.
Dimensions
d - Cone Bore
2 3/16
in
55.563
mm
B - Double Cone Width
2.0940
in
53.188
mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius
1
0.03
in
0.800
mm
da - Cone Frontface Backing Diameter
2.48
in
63
mm
Ab - Cage-Cone Frontface Clearance
0.11
in
2.8
mm
1
These maximum fillet radii will be cleared by the bearing corners.
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)
1
5300
lbf
23600
N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)
2
35600
lbf
158000
N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)
3
9230
lbf
41100
N
C
a90
- Dynamic Thrust Rating (90 million revolutions)
4
3210
lbf
14300
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.
4
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
1.65
G1 - Heat Generation Factor (Roller-Raceway)
42
G2 - Heat Generation Factor (Rib-Roller End)
15.7
Cg - Geometry Factor
2
0.0859
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.
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·
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·
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·
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©
The Timken Company. ©
The Timken Company.
©
The Timken Company.