All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - Single Cones > Tapered Roller Bearings - Single Cones - Imperial > Part Number LL420549  

Part Number LL420549, Tapered Roller Bearings - Single Cones - Imperial

    Download PDF Download PDF   
    border="0" Printable Page  
    Email Email This Page  
    Save To Favorites Save To Favorites
  

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

Cone Part Number
LL420549

Design Units
Imperial

Cage Type
Stamped Steel

C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1
25400 lbf
113000 N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2
6590 lbf
29300 N
1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
2 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.


Dimensions

d - Cone Bore
4 in
101.600 mm

B - Cone Width
0.5938 in
15.083 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.06 in
1.520 mm

da - Cone Frontface Backing Diameter
4.21 in
107 mm

db - Cone Backface Backing Diameter
4.29 in
109 mm

Ab - Cage-Cone Frontface Clearance
0.11 in
2.8 mm

Aa - Cage-Cone Backface Clearance
0.02 in
0.5 mm

a - Effective Center Location2
0.22 in
5.6 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
3780 lbf
16800 N

C1 - Dynamic Radial Rating (1 million revolutions)2
14600 lbf
64900 N

C0 - Static Radial Rating
23400 lbf
104000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
2400 lbf
10700 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
1.58

G1 - Heat Generation Factor (Roller-Raceway)
95.5

G2 - Heat Generation Factor (Rib-Roller End)
89.7

Cg - Geometry Factor2
0.113
1 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
2 Geometry constant for Lubrication Life Adjustment Factor a3l.



 DOWNLOADS 

Tapered Roller Bearing Engineering Information
(PDF, 663KB)

Bearing Life Calculation Tool

Bearing Dimensional Tolerances