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Unit of Measure

Technical Specifications

Type

N/A Spherical Roller Bearing

Bore Type

N/A Round

Material

N/A Through Hardened Steel

Cage Type

N/A Pressed

Cage Material

N/A Steel

Limiting Speed - Oil

N/A 1700 rpm

Limiting Speed - Grease

N/A 1300 rpm

e

N/A 0.29

Y1

N/A 2.32

Y2

N/A 3.45

Y0

N/A 2.26

Series

N/A 231

Radial Internal Clearance

N/A CN

Ring Modification

N/A Relube

Tolerance

N/A JIS-0 RBEC-1

Static Load Rating

N/A 440000 lbf1960000 N1960.00 kN

Dynamic Load Rating

N/A 335000 lbf1490000 N1490.00 kN

Enclosure

N/A Open

Weight

N/A 59.282 lb26.890 kg

Operating Temperature Range

N/A -40 to 400 ºF-40 to 200 ºC

Dimensional Specifications


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

d

N/A 7.0866 in180.000 mm

D

N/A 11.811 in300 mm

B

N/A 3.7795 in96 mm

d1

N/A 8.0709 in205.000 mm

D1

N/A 10.5118 in267.000 mm

r

N/A 0.11810 in3.000 mm

W0

N/A 0.5906 in15.000 mm

d0

N/A 0.2756 in7.000 mm

da min

N/A 7.6378 in194.000 mm

Da max

N/A 11.2598 in286.000 mm

ras max

N/A 0.1181 in3 mm