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Kef. No. : ISO/K 1123-1969 (E)
UDC 621.822.87 : 621.753.2
IS0
FOR STANDARDIZATION
I NTERN AT1 O N A L O RG A N IZATl O N
IS0 RECOMMENDATION
R 1123
ROLLING BEARINGS
TAPERED ROLLER BEARINGS
INCH SERIES
CHAMFER DIMENSION LIMITS
1st EDITION
September 1969
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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-2- ISO/R 1123-1969 (E)
IS0 Recommendation R 1123 September 1969
ROLLING BEARINGS
TAPERED ROLLER BEARINGS
INCH SERIES
CHAMFER DIMENSION LIMITS
1. SCOPE
I
This IS0 Recommendation comprises the maximum chamfer dimension limits for the ,chamfers, for which
minimum values Rmin and rmin are given in IS0 Recommendation R 355, Part I, Rolling bearings ~~ Tapered
roller bearings - Boundary dimensions.
I 2. SYMBOLS
d = inner ring bore diameter
D = outer ring outside diameter
R = nominal dimension of inner ring backface chamfer
= height of inner ring backface chamfer
Ri
= width of inner ring backface chamfer
R2
r = nominal dimension of outer ring backface chamfer
= height of outer ring backface chamfer
rl
= width of outer ring backface chamfer
r2
I
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-3- ISO/R 1123-1969 (E
3. CHAMFER DIMENSION LIMITS
TABLE 1 -inner ring
Bore diameter Chamfer width
I Chamfer height I I
d
nominal
R1 R2
I Over I Incl. I M
...