Unit of Measure

Technical Specifications

Type

Tapered Roller Bearing

Bore Type

Round

Material

Case Carburized Steel

Style

Cone & Cup

Precision Rating

Class 4

Cone Number

2578

Cup Number

2523

Configuration

One

Lubrication

w/o Oil Hole

e (Axial Load Factor)

0.27

Y2 (Axial Load Factor)

2.19

Static Load Rating

18300 lbf81500 N81.50 kN

Dynamic Load Rating

15500 lbf69000 N69.00 kN

Enclosure

Open

Operating Temperature Range

-40 to 250 ºF-40 to 120 ºC

Dimensional Specifications


Tapered Roller Set - Inch Series and J Series - Dimensions

B

1.1250 in28.575 mm

D

2.7500 in69.850 mm

Wo

0.7500 in19.050 mm

Wi

0.9983 in25.357 mm

W

0.9375 in23.812 mm

r

0.05 in1.3 mm

R

0.09 in2.3 mm

a (Effective Load Center)

-0.36 in-9.1 mm

U

1.54 in39.0 mm

V

1.38 in35.0 mm

X

2.52 in64.0 mm

Z

2.40 in61.0 mm