All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - Single Cones > Tapered Roller Bearings - Single Cones - Imperial > Part Number NA24776SW  

Part Number NA24776SW, Tapered Roller Bearings - Single Cones - Imperial

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This is the most basic and most widely used type of tapered roller bearing. It consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft.




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

Specifications

Series
24700

Cone Part Number
NA24776SW

Design Units
Imperial

Cage Type
Stamped Steel


Dimensions

d - Cone Bore
1 1/2 in
38.10 mm

B - Cone Width
1.1562 in
29.367 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.03 in
0.762 mm

da - Cone Frontface Backing Diameter
0 in
0 mm

db - Cone Backface Backing Diameter
1.77 in
45 mm

Ab - Cage-Cone Frontface Clearance
0.01 in
0.3 mm

Aa - Cage-Cone Backface Clearance
0.22 in
5.6 mm

a - Effective Center Location2
-0.38 in
-9.7 mm
1 These maximum fillet radii will be cleared by the bearing corners.
2 Negative value indicates effective center inside cone backface.


Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)1
4400 lbf
19600 N

C1 - Dynamic Radial Rating (1 million revolutions)2
17000 lbf
75500 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
2960 lbf
13200 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.


Factors

K - Factor1
1.49

G1 - Heat Generation Factor (Roller-Raceway)
26.4

G2 - Heat Generation Factor (Rib-Roller End)
16.5
1 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.



 DOWNLOADS 

Tapered Roller Bearing Engineering Information
(PDF, 663KB)

Bearing Life Calculation Tool

Bearing Dimensional Tolerances