All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - Double Cones > Tapered Roller Bearings - Double Tapered Cones - Imperial > Part Number 378DE  

Part Number 378DE, Tapered Roller Bearings - Double Tapered Cones - Imperial

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

TDI bearings have a one-piece double inner race and two single outer races and are typically supplied complete with an outer race spacer as a pre-set assembly. The bearing can be used at fixed positions on rotation shaft applications. For rotating housing application it can be used to float on the stationary shaft.




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

Specifications

Series
375

Cone Part Number
378DE

Design Units
Imperial

Cage Type
Stamped Steel

C1 - Dynamic Radial Rating (1 million revolutions)1
19800 lbf
87900 N

C0 - Static Radial Rating
22700 lbf
101000 N
1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.


Dimensions

d - Cone Bore
1 15/16 in
49.213 mm

B - Double Cone Width
2.0940 in
53.188 mm


Abutment and Fillet Dimensions

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

da - Cone Frontface Backing Diameter
2.2 in
56 mm

Ab - Cage-Cone Frontface Clearance
0.09 in
2.3 mm
1 These maximum fillet radii will be cleared by the bearing corners.


Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)1
5120 lbf
22800 N

C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)2
34400 lbf
153000 N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)3
8920 lbf
39700 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)4
2970 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.
4 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
1.73

Cg - Geometry Factor2
0.0816
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 

Bearing Life Calculation Tool

Bearing Dimensional Tolerances