Unit of Measure

Technical Specifications

Type

 Spherical Roller Bearing

Bore Type

 Round

Material

 Through Hardened Steel

Cage Type

 Machined

Cage Material

 Brass

Limiting Speed - Oil

 2400 rpm

Limiting Speed - Grease

 1900 rpm

e

 0.27

Y1

 2.51

Y2

 3.74

Y0

 2.45

Series

 231

Radial Internal Clearance

 CN

Ring Modification

 Relube

Tolerance

 JIS-0 RBEC-1

Static Load Rating

 204000 lbf906000 N906.00 kN

Dynamic Load Rating

 160000 lbf710000 N710.00 kN

Enclosure

 Open

Weight

 18.761 lb8.51 kg

Operating Temperature Range

 -40 to 400 ºF-40 to 200 ºC

Dimensional Specifications


Spherical Roller Bearing w/ Standard Bore & Oil Groove, 231 Series - Dimensions

d

 5.1181 in130.000 mm

D

 8.2677 in210 mm

B

 2.5197 in64 mm

d1

 5.8268 in148.000 mm

D1

 7.4409 in189.000 mm

r

 0.07870 in2.000 mm

W0

 0.3937 in10.000 mm

d0

 0.1772 in4.500 mm

da min

 5.5512 in141.000 mm

Da max

 7.8346 in199.000 mm

ras max

 0.0787 in2.000 mm