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Part Number JLM104942A - JLM104910
Part Number JLM104942A - JLM104910, Tapered Roller Bearings - TS (Tapered Single) Metric
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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
LM104900
Cone Part Number
JLM104942A
Cup Part Number
JLM104910
Design Unit
Metric
Cage Material
Stamped Steel
Dimensions
d - Bore
48.600
mm
1.9134
in
D - Cup Outer Diameter
82.000
mm
3.2283
in
B - Cone Width
21.500
mm
0.8465
in
C - Cup Width
17.000
mm
0.6693
in
T - Bearing Width
21.500
mm
0.8465
in
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius
1
0.4
mm
0.015
in
r - Cup Backface "To Clear" Radius
2
0.51
mm
0.020
in
da - Cone Frontface Backing Diameter
55
mm
2.17
in
db - Cone Backface Backing Diameter
54
mm
2.13
in
Da - Cup Frontface Backing Diameter
78.00
mm
3.11
in
Db - Cup Backface Backing Diameter
75.95
mm
2.99
in
Ab - Cage-Cone Frontface Clearance
2.8
mm
0.11
in
Aa - Cage-Cone Backface Clearance
0.3
mm
0.01
in
a - Effective Center Location
3
-5.3
mm
-0.21
in
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
25000
N
5610
lbf
C1 - Dynamic Radial Rating (1 million revolutions)
2
96300
N
21700
lbf
C0 - Static Radial Rating
104000
N
23400
lbf
C
a90
- Dynamic Thrust Rating (90 million revolutions)
3
13000
N
2930
lbf
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
1.91
e - ISO Factor
2
0.31
Y - ISO Factor
3
1.97
G1 - Heat Generation Factor (Roller-Raceway)
38.8
G2 - Heat Generation Factor (Rib-Roller End)
23.2
Cg - Geometry Factor
4
0.0801
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
