NTN BEARING CORPORATION OF AMERICA
NTN BEARING CORPORATION OF AMERICA
Head Office
1600 E. Bishop Court, P.O. Box 7604
Mount Prospect, IL 60056-7604, U.S.A.
Phone: 847-298-7500
Fax: 847-699-9744
Toll Free: 800-323-2358
Email: mkt@ntnamerica.com
Website: www.ntnamericas.com
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Unit of Measure

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Ordering Options

 N/A Order Online through NTN DOL Contact NTN Customer Relations Search for a Licensed Distributor

Technical Specifications

Type

 N/A Spherical Roller Bearing

Bore Type

 N/A Round

Material

 N/A Through Hardened Steel

Cage Type

 N/A Machined

Cage Material

 N/A Brass

e

 N/A 0.33

Y1

 N/A 2.06

Y2

 N/A 3.07

Y0

 N/A 2.02

Series

 N/A 231

Radial Internal Clearance

 N/A CN

Ring Modification

 N/A Relube

Tolerance

 N/A JIS-0 RBEC-1

Enclosure

 N/A Open

Weight

 N/A 368.172 lb167.000 kg

Operating Temperature Range

 N/A -40 to 320 ºF-40 to 160 ºC

Dimensional Specifications


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

d

 N/A 12.5984 in320.000 mm

D

 N/A 21.2598 in540.000 mm

B

 N/A 6.9291 in176.000 mm

r

 N/A 0.1969 in5.000 mm

W0

 N/A 1.0630 in27.000 mm

d0

 N/A 0.6299 in16.000 mm

da min

 N/A 13.4646 in342.000 mm

Da max

 N/A 20.3937 in518.000 mm

ras max

 N/A 0.1575 in4.000 mm