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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - TNA (Tapered Double, non-adjustable) Imperial > Part Number HM231149NA - HM231116D  
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Part Number HM231149NA - HM231116D, 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
HM231149NA

Cup Part Number
HM231116D

Related Assembly Number(s)
HM231149NA-90032

Design Unit
Inch


Dimensions

d - Bore
5.8750 in
149.225 mm

D - Cup Outer Diameter
9.5000 in
241.300 mm

T - Bearing Width across Cones
5.1875 in
131.762 mm

C - Double Cup Width
4.1875 in
106.363 mm


Abutment and Fillet Dimensions

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

r - Cup Backface "To Clear" Radius2
0.06 in
1.5 mm

db - Cone Backface Backing Diameter
6.57 in
167 mm

Da - Cup Frontface Backing Diameter
8.84 in
224.03 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
34800 lbf
155000 N

C1 - Dynamic Radial Rating (1 million revolutions)2
234000 lbf
1040000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
19000 lbf
84500 N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)4
60600 lbf
269000 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
1.83

e - ISO Factor2
0.32

Y1 - ISO Factor3
2.12

Y2 - ISO Factor4
3.15
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



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Bearing Life Calculation Tool

Bearing Dimensional Tolerances

Tools and Guides for Engineers


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