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Timken Part Number A4049 – A4138, Tapered Roller Bearings – TS (Tapered Single) Imperial

Home TIMKEN BEARING Timken Part Number A4049 – A4138, Tapered Roller Bearings – TS (Tapered Single) Imperial

Timken Part Number A4049 – A4138, Tapered Roller Bearings – TS (Tapered Single) Imperial

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.

TIMKEN BEARING

Description

Specifications

Series

 A4000

Cone Part Number

 A4049

Cup Part Number

 A4138

Design Units

 Imperial

Bearing Weight

 0.10 Kg0.1 lb

Cage Type

 Stamped Steel

Dimensions

d – Bore

 12.680 mm0.4992 in

D – Cup Outer Diameter

 34.989 mm1.3775 in

B – Cone Width

 10.988 mm0.4326 in

C – Cup Width

 8.730 mm0.3437 in

T – Bearing Width

 10.998 mm0.4330 in

Abutment and Fillet Dimensions

R – Cone Backface “To Clear” Radius1 0.760 mm0.03 in
r – Cup Backface “To Clear” Radius2 1.27 mm0.050 in

da – Cone Frontface Backing Diameter

 17.53 mm0.69 in

db – Cone Backface Backing Diameter

 17.53 mm0.69 in

Da – Cup Frontface Backing Diameter

 32.51 mm1.28 in

Db – Cup Backface Backing Diameter

 28.96 mm1.14 in

Ab – Cage-Cone Frontface Clearance

 1.8 mm0.07 in

Aa – Cage-Cone Backface Clearance

 0 mm0 in
a – Effective Center Location3 -2.5 mm-0.1 in

Basic Load Ratings

C90 – Dynamic Radial Rating (90 million revolutions)4 767 lbf3410 N
C1 – Dynamic Radial Rating (1 million revolutions)5 2960 lbf13200 N

C0 – Static Radial Rating

 2580 lbf11500 N
Ca90 – Dynamic Thrust Rating (90 million revolutions)6 594 lbf2640 N

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