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IS0
I NT ERN AT1 ON AL ORGAN I ZATl O N FOR STAND AR D IZATl O N
IS0 RECOMMENDATION
R 246
ROLLING BEARINGS
CYLINDRICAL ROLLER BEARINGS
SEPARATE THRUST COLLARS
BOUNDARY DIMENSIONS
1st E D IT1 O N
March 1962
COPYRIGHT RESERVED
The copyright of IS0 Recommendations and IS0 Standards
belongs to IS0 Member Bodies. Reproduction of these
documents, in any country, may be authorized therefore only
by the national standards organization of that country, being
a member of ISO.
For each individual country the only valid standard is the national standard of that country.
Printed in Switzerland
Also issued in French and Russian. Copies to be obtained through the national standards organizations.
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BRIEF HISTORY
The IS0 Recommendation R 246, Cylindrical Roller Bearings. Separate Thrust Collars.
Boundary Dimensions, was drawn up by Technical Committee ISO/TC 4, Ball and Roller
Bearings, the Secretariat of which is held by the Sveriges Standardiseringskommission (SIS).
Work on this question by the Technical Committee began in 1956 and led in 1958
to the adoption of a Draft IS0 Recommendation.
In March 1959, this Draft IS0 Recommendation (No. 281) was circulated to all the
IS0 Member Bodies for enquiry. It was approved, subject to a few modifications of an
editorial nature, by the following Member Bodies :
Austria India Spain
Brazil Israel Sweden
Burma
Italy Switzerland
Canada
Japan United Kingdom
Czechoslovakia Netherlands U.S.A.
France Poland U.S.S.R.
Germany Portugal
Hungary Romania
No Member Body opposed the approval of the Draft.
The Draft IS0 Recommendation was then submitted by corres
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