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Part Number 9278 - 9221-B
Part Number 9278 - 9221-B, Tapered Roller Bearings - TSF (Tapered Single with Flange) Imperial
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Like the TS bearing design, the TSF design 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. TSF bearings have flanged cups to facilitate axial location and accurately align seals in through-bored housings.
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Specifications
·
Dimensions
·
Abutment and Fillet Dimensions
·
Basic Load Ratings
·
Factors
Specifications
Series
9200
Cone Part Number
9278
Cup Part Number
9221-B
Design Unit
Inch
Cage Material
Stamped Steel
Dimensions
d - Bore
2 11/16
in
68.263
mm
D - Cup Outer Diameter
6-3/8
in
161.925
mm
D1 - Flange Outer Diameter
6.7500
in
171.450
mm
B - Cone Width
1.8125
in
46.038
mm
C - Cup Width
1.1875
in
30.163
mm
C1 - Cup Flange Width
0.2810
in
7.137
mm
T1 - Bearing Width to Flange
0.9685
in
24.600
mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius
1
0.14
in
3.600
mm
r - Cup Backface "To Clear" Radius
2
0.130
in
3.30
mm
da - Cone Frontface Backing Diameter
3.5
in
89
mm
db - Cone Backface Backing Diameter
4.17
in
106
mm
Da - Cup Frontface Backing Diameter
6.04
in
153.42
mm
Ab - Cage-Cone Frontface Clearance
0.18
in
4.6
mm
Aa - Cage-Cone Backface Clearance
0.33
in
8.4
mm
a - Effective Center Location
3
0
in
0
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
20600
lbf
91400
N
C1 - Dynamic Radial Rating (1 million revolutions)
2
79300
lbf
353000
N
C0 - Static Radial Rating
74200
lbf
330000
N
C
a90
- Dynamic Thrust Rating (90 million revolutions)
3
24900
lbf
111000
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
0.82
e - ISO Factor
2
0.71
Y - ISO Factor
3
0.85
G1 - Heat Generation Factor (Roller-Raceway)
102.5
G2 - Heat Generation Factor (Rib-Roller End)
16.1
Cg - Geometry Factor
4
0.0984
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.
MORE IMAGES
·
Timken_TRB_1ROWASSY_TSF_32312BM-90KM2-S
·
Timken_TRB_1ROWASSY_TSF_32312BM-90KM2-T
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·
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