All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - TNA (Tapered Double, non-adjustable) Imperial > Part Number NA48685SW - 48620D  

Part Number NA48685SW - 48620D, 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
NA48685SW

Cup Part Number
48620D

Design Unit
Inch


Dimensions

d - Bore
5.625 in
142.875 mm

D - Cup Outer Diameter
7.875 in
200.025 mm

T - Bearing Width across Cones
3.6876 in
93.665 mm

C - Double Cup Width
2.875 in
73.025 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
6.22 in
158 mm

Da - Cup Frontface Backing Diameter
7.61 in
193.04 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
16700 lbf
74300 N

C1 - Dynamic Radial Rating (1 million revolutions)2
112000 lbf
499000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
9610 lbf
42800 N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)4
29100 lbf
129000 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
1.74

e - ISO Factor2
0.34

Y1 - ISO Factor3
2.01

Y2 - ISO Factor4
2.99
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 

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·  timken-TNASWE-left-angle-view

·  timken-TNASWE-cutaway-angle-view



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