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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - Single Cones > Tapered Roller Bearings - Single Cones - Metric > Part Number JHM807045  
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Part Number JHM807045, Tapered Roller Bearings - Single Cones - Metric


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.



Unit of Measure: Imperial Metric Both

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

Specifications

Series
HM807000

Cone Part Number
JHM807045

Design Units
METRIC

Cage Type
Stamped Steel

C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1
354000 N
79600 lbf

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2
91800 N
20600 lbf

Full Timken Part Number
HM807000
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
50 mm
1.9685 in

B - Cone Width
36 mm
1.4173 in


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
3.050 mm
0.12 in

da - Cone Frontface Backing Diameter
63 mm
2.48 in

db - Cone Backface Backing Diameter
69 mm
2.72 in

Ab - Cage-Cone Frontface Clearance
3 mm
0.12 in

Aa - Cage-Cone Backface Clearance
3 mm
0.12 in

a - Effective Center Location2
-7.6 mm
-0.3 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
52700 N
11900 lbf

C1 - Dynamic Radial Rating (1 million revolutions)2
203000 N
45700 lbf

C0 - Static Radial Rating
223000 N
50200 lbf

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
44000 N
9890 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
1.2

G1 - Heat Generation Factor (Roller-Raceway)
63.9

G2 - Heat Generation Factor (Rib-Roller End)
17.1

Cg - Geometry Factor2
0.076
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


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