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Part Number 390A - 394A (395LC), Tapered Roller Bearings - TSL (DUO-FACE® Plus Seal) Imperial

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Tapered Roller Bearings - TSL (DUO-FACE® Plus Seal) Imperial




Specifications  · Dimensions  · Abutment and Fillet Dimensions  · Basic Load Ratings  · Factors

Specifications

Series
395

Cone Part Number
390A

Cup Part Number
394A

Seal Part Number
395LC

Design Unit
Inch

Cage Material
Stamped Steel


Dimensions

d - Bore
2 1/2 in
63.500 mm

D - Cup Outer Diameter
4.3307 in
110 mm

B - Cone Width
0.8660 in
21.996 mm

C - Cup Width
0.7411 in
18.824 mm

T - Bearing Width
0.8661 in
21.999 mm

T1 - Total Width
0.9141 in
23.218 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.06 in
1.5 mm

r - Cup Backface "To Clear" Radius2
0.050 in
1.27 mm

da - Cone Frontface Backing Diameter
2.76 in
70 mm

db - Cone Backface Backing Diameter
2.87 in
73 mm

Da - Cup Frontface Backing Diameter
4.15 in
105.40 mm

Db - Cup Backface Backing Diameter
3.98 in
101.09 mm

Ab - Cage-Cone Frontface Clearance
0.11 in
2.8 mm

Aa - Cage-Cone Backface Clearance
0.05 in
1.3 mm

a - Effective Center Location3
-0.03 in
-0.8 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
5760 lbf
25600 N

C1 - Dynamic Radial Rating (1 million revolutions)2
22200 lbf
98900 N

C0 - Static Radial Rating
28100 lbf
125000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
3970 lbf
17600 N
1 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
2 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
3 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.


Factors

K - Factor1
1.45

e - ISO Factor2
0.4

Y - ISO Factor3
1.49

Y1 - ISO Factor4
1.68

Y2 - ISO Factor5
2.5

G1 - Heat Generation Factor (Roller-Raceway)
56

G2 - Heat Generation Factor (Rib-Roller End)
21.4

Cg - Geometry Factor6
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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
5 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
6 Geometry constant for Lubrication Life Adjustment Factor a3l.


 MORE IMAGES 

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·  Timken TRB TSL



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Tapered Roller Bearing Engineering Information
(PDF, 663KB)

Bearing Life Calculation Tool

Bearing Dimensional Tolerances