Bearing Finder
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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

78215C

Cup Number

78551

Configuration

One

Lubrication

w/o Oil Hole

e (Axial Load Factor)

0.87

Y2 (Axial Load Factor)

0.69

Static Load Rating

55000 lbf245000 N245.00 kN

Dynamic Load Rating

43000 lbf191000 N191.00 kN

Enclosure

Open

Operating Temperature Range

-40 to 250 ºF-40 to 120 ºC

Dimensional Specifications

Open Image
Tapered Roller Set - Inch Series and J Series - Dimensions

B

2.1250 in53.975 mm

D

5.5130 in140.030 mm

Wo

0.9260 in23.520 mm

Wi

1.3085 in33.236 mm

W

1.4375 in36.512 mm

r

0.0900 in2.300 mm

R

0.14 in3.5 mm

a (Effective Load Center)

0.3300 in8.400 mm

U

3.31 in84.0 mm

V

3.03 in77.0 mm

X

5.20 in132.0 mm

Z

4.61 in117.0 mm