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Part Number NA64432SW - 64708D, Tapered Roller Bearings - TNA (Tapered Double, non-adjustable) Imperial

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

Specifications

Cone Part Number
NA64432SW

Cup Part Number
64708D

Design Unit
Inch


Dimensions

d - Bore
4.3297 in
109.975 mm

D - Cup Outer Diameter
7.0856 in
179.974 mm

T - Bearing Width across Cones
4 in
101.6 mm

C - Double Cup Width
2.75 in
69.85 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.14 in
3.5 mm

r - Cup Backface "To Clear" Radius2
0.030 in
0.8 mm

db - Cone Backface Backing Diameter
5.04 in
128 mm

Da - Cup Frontface Backing Diameter
6.85 in
173.99 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)1
14800 lbf
65900 N

C1 - Dynamic Radial Rating (1 million revolutions)2
99600 lbf
443000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
13100 lbf
58300 N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)4
25800 lbf
115000 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.
4 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
1.13

e - ISO Factor2
0.52

Y1 - ISO Factor3
1.31

Y2 - ISO Factor4
1.95
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-TNA-cutaway-angle-view

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·  Timken TRB TNA

·  timken-TNASWE-left-angle-view

·  timken-TNASWE-cutaway-angle-view



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