Montage of Timken Bearing Products 
Search Catalog
        
 All Product Types    Tapered Roller Bearings - TS (Tapered Single) Imperial
View Cart View RFQs Express Ordering  | Shipping 
 | Tax 
 | Terms
 Shopping Cart 0 Items
 Request for Quote 0 Items
All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - TS (Tapered Single) > Tapered Roller Bearings - TS (Tapered Single) Imperial > Part Number EE425179A - 425299  
Download PDF Download PDF     Printable Page     Email Email This Page     Save To Favorites Save To Favorites
Add To Cart Request Quote

Part Number EE425179A - 425299, 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.



Unit of Measure: Imperial Metric Both

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

Specifications

Series
425000

Cone Part Number
EE425179A

Cup Part Number
425299

Design Unit
Inch

Cage Material
Pin-Type

Related Assembly Number(s)
EE425179A-902A1


Dimensions

d - Bore
17.9840 in
456.794 mm

D - Cup Outer Diameter
29.9950 in
761.873 mm

B - Cone Width
5.6250 in
142.875 mm

C - Cup Width
4.0000 in
101.600 mm

T - Bearing Width
5.6250 in
142.875 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.630 in
16.000 mm

r - Cup Backface "To Clear" Radius2
0.250 in
6.35 mm

da - Cone Frontface Backing Diameter
19.53 in
496 mm

db - Cone Backface Backing Diameter
20.67 in
525 mm

Da - Cup Frontface Backing Diameter
28.26 in
717.80 mm

Db - Cup Backface Backing Diameter
27.40 in
695.96 mm

Ab - Cage-Cone Frontface Clearance
0.19 in
4.8 mm

Aa - Cage-Cone Backface Clearance
0.77 in
19.6 mm

a - Effective Center Location3
0.31 in
7.9 mm
1 These maximum fillet radii will be cleared by the bearing corners.
2 These maximum fillet radii will be cleared by the bearing corners.
3 Negative value indicates effective center inside cone backface.


Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)1
207000 lbf
920000 N

C1 - Dynamic Radial Rating (1 million revolutions)2
798000 lbf
3550000 N

C0 - Static Radial Rating
1400000 lbf
6210000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
156000 lbf
695000 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
1.32

e - ISO Factor2
0.44

Y - ISO Factor3
1.36

G1 - Heat Generation Factor (Roller-Raceway)
5741.9

G2 - Heat Generation Factor (Rib-Roller End)
326.2

Cg - Geometry Factor4
0.253
1 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
2 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
3 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
4 Geometry constant for Lubrication Life Adjustment Factor a3l.



 DOWNLOADS 

Tapered Roller Bearing Engineering Information
(PDF, 663KB)

Bearing Life Calculation Tool

Bearing Dimensional Tolerances



 NEW PRODUCT OFFERING 


TimkenWirelessSensor
Timken® Wireless Sensor and Monitoring Solution

timken-2TS-DM-24-OD-pin-cage-top-angle-view
Tapered Roller Bearings - 2TS (Matched Bearing Assembly)

Add To Cart Request Quote
<