All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - Single Cones > Tapered Roller Bearings - Single Cones - Metric > Part Number JW4549  

Part Number JW4549, Tapered Roller Bearings - Single Cones - Metric

    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

Series
JW4500

Cone Part Number
JW4549

Design Units
METRIC

Cage Type
Stamped Steel

C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1
206000 N
46300 lbf

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2
53400 N
12000 lbf

Full Timken Part Number
JW4500
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
45 mm
1.7717 in

B - Cone Width
26.500 mm
1.0433 in


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
2.540 mm
0.1 in

da - Cone Frontface Backing Diameter
54 mm
2.13 in

db - Cone Backface Backing Diameter
64 mm
2.52 in

Ab - Cage-Cone Frontface Clearance
3.6 mm
0.14 in

Aa - Cage-Cone Backface Clearance
3.8 mm
0.15 in

a - Effective Center Location2
4 mm
0.16 in
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
30700 N
6900 lbf

C1 - Dynamic Radial Rating (1 million revolutions)2
118000 N
26600 lbf

C0 - Static Radial Rating
114000 N
25600 lbf

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
45500 N
10200 lbf
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
0.67

G1 - Heat Generation Factor (Roller-Raceway)
30.7

G2 - Heat Generation Factor (Rib-Roller End)
12.9

Cg - Geometry Factor2
0.102
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