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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - TNA (Tapered Double, non-adjustable) Imperial > Part Number NA484SW - 472D  
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Part Number NA484SW - 472D, Tapered Roller Bearings - TNA (Tapered Double, non-adjustable) Imperial






Unit of Measure: Imperial Metric Both

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

Specifications

Cone Part Number
NA484SW

Cup Part Number
472D

Design Unit
Inch


Dimensions

d - Bore
2.7559 in
70 mm

D - Cup Outer Diameter
4.7244 in
120 mm

T - Bearing Width across Cones
2.5626 in
65.090 mm

C - Double Cup Width
2.1250 in
53.975 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
0.762 mm

db - Cone Backface Backing Diameter
3.27 in
83 mm

Da - Cup Frontface Backing Diameter
4.49 in
114.046 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
8360 lbf
37200 N

C1 - Dynamic Radial Rating (1 million revolutions)2
56100 lbf
250000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
5500 lbf
24500 N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)4
14600 lbf
64700 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
1.52

e - ISO Factor2
0.38

Y1 - ISO Factor3
1.75

Y2 - ISO Factor4
2.61
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

·  timken-TNA-left-angle-view

·  Timken TRB TNA

·  timken-TNASW-left-angle-view

·  timken-TNASW-cutaway-angle-view

·  Timken TRB TNASW



 DOWNLOADS 

Bearing Life Calculation Tool

Bearing Dimensional Tolerances

Tools and Guides for Engineers


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