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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - 2TS (Matched Bearing Assembly) > Tapered Roller Bearings - 2S (Matched Bearing Assembly, with snap ring spacer) > Part Number 399A - 394A (X5S-399A - XC914-SD)  
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Part Number 399A - 394A (X5S-399A - XC914-SD), Tapered Roller Bearings - 2S (Matched Bearing Assembly, with snap ring spacer)


Tapered Roller Bearings - 2S (Matched Bearing Assembly, with snap ring spacer)



Unit of Measure: Imperial Metric Both

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

Specifications

Cone Part Number
399A

Cup Part Number
394A

Inner Spacer Part Number
X5S-399A

Outer Spacer Part Number
XC914-SD

Design Unit
Inch


Dimensions

d - Bore
2 11/16 in
68.263 mm

D - Cup Outer Diameter
4.3307 in
110 mm

T - Width
1.9462 in
49.433 mm

C - Width
1.6962 in
43.083 mm

Snap Ring Diameter
4.49 in
114.05 mm

Snap Ring Width
0.22 in
5.54 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.09 in
2.300 mm

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

db - Cone Backface Backing Diameter
3.07 in
78 mm

Da - Cup Frontface Backing Diameter
4.15 in
105.40 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.


Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)
5760 lbf
25600 N

C1 - Dynamic Radial Rating (1 million revolutions)1
38700 lbf
172000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)2
3970 lbf
17600 N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)3
10000 lbf
44600 N
1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
2 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.
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

Y1 - ISO Factor3
1.68

Y2 - ISO Factor4
2.5
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.


 MORE IMAGES 

·  timken-2TS-IMSS-SR-cutaway-angle-view

·  timken-2TS-IMSS-SR-left-angle-view

·  Timken TRB 2S



 DOWNLOADS 

Bearing Life Calculation Tool

Bearing Dimensional Tolerances

Tools and Guides for Engineers


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