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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 779D
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Part Number 779D, 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
775
Cone Part Number
779D
Design Units
Imperial
Cage Type
Stamped Steel
C1 - Dynamic Radial Rating (1 million revolutions)
1
77800
lbf
346000
N
C0 - Static Radial Rating
111000
lbf
495000
N
1
Based on 1 x 10
6
revolutions L
10
life, for the ISO life calculation method.
Dimensions
d - Cone Bore
3.8750
in
98.425
mm
B - Double Cone Width
4.0300
in
102.362
mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius
1
0.06
in
1.5
mm
da - Cone Frontface Backing Diameter
4.41
in
112
mm
Ab - Cage-Cone Frontface Clearance
0.07
in
1.8
mm
1
These maximum fillet radii will be cleared by the bearing corners.
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)
1
20200
lbf
89700
N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)
2
135000
lbf
603000
N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)
3
35100
lbf
156000
N
C
a90
- Dynamic Thrust Rating (90 million revolutions)
4
13300
lbf
59200
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
1.51
G1 - Heat Generation Factor (Roller-Raceway)
227
G2 - Heat Generation Factor (Rib-Roller End)
41.3
Cg - Geometry Factor
2
0.107
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
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©
The Timken Company. ©
The Timken Company.
©
The Timken Company.