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IS0
I NT ERN AT I O NA L O RG A N IZAT I O N FOR STA N D A RD IZ AT I O N
IS0 R ECOM MENDATI ON
R 467
PREFERRED MODULES AND DIAMETRAL PITCHES
OF CYLINDRICAL GEARS FOR GENERAL ENGINEERING
1st EDITION
January 1966
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 467, Preferred Modules and Diametral Pitches of Cylin-
drical Gears for General Engineering, was drawn up by Technical Committee ISO/TC 60,
Gears, the Secretariat of which is held by the Institut Belge de Normalisation (IBN).
Work on this question by the Technical Committee began in 1956 and led, in 1961, to
the adoption of a Draft IS0 Recommendation.
In July 1963, this Draft IS0 Recommendation (No. 591) 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:
Argentina Greece Poland
Austria India Spain
Belgium Italy Sweden
Chile Korea, Rep. of Switzerland
Netherlands United Kingdom
Colombia
France New Zealand Yugoslavia
Germany Norway
Four Member Bodies opposed the approval of the Draft:
Australia
Czechoslovakia
Hungary
U.S.S.R.
The Draft IS0 Recommendation was then submitted by correspondence to the IS0
Council which decided, in January 1966, to accept it as an IS0 RECOMMENDATION.
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IÇO/R 467 - 1966 (E)
January 1966
R 467
IS0 Recommendation
PREFERRED MODULES AND DIAMETRAL PITCHES
OF CYLINDRICAL GEARS FOR GENERAL ENGINEERING
INTRODUCTION
This IS0 Recommendation defines ranges of modules and diametral pitches graduated very
regularly, in progressions near to that of preferred numbers series, by selection from the two
ranges of modules and diametral pitches of IS0 Recommendation R 54, Modules and Diametral
Pitches of Cylindrical Gears for General Engineering.
This IS0 Recommendation has been established for the convenience of those countries which
desire to adopt a regularly graduated series of modules and diametral pitches.
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iSO/ R 467 - 1966 (E)
1. PREFERRED MODULES (m) AND DIAMETRAL PITCHES (P)
1.1 Principal and complementary sizes
Principal sizes
_____~ -~ _.
Comple-
Preferred Serial
Serial Preferred
mentary
R 10 ~ R20
R5
number number
number
number
sizes
Ratio y IO ~ Ratio io
Ratio io
ml
O 100
P 24 106 1
m 1.125
112
2
-
118 3
125 m 1.25 m 1.25
4
-
5
132
P 18
6 140
m 1.5 150 7
P 16
8 160
I 170 9
i m 1.75
10 180
190 11
200 m2 m2
12
212 13
P 12
14 224 m 2.25
-
236 15
_______
250 m 2.5 m 2.5 m 2.5
16
-
265 17
I
IP9
18 280
300 19
I I m3
P8
20 315 P8
-
335 21
m 3.5
355
22
-
23
375
24 400 m4 m4 m4
P6 425 25
450 m 4.5
26
-
475 27
m5 m5
28 500
-
530 29
P 4.5
30 560
600 31
P4 P4
630 P4
32
-
670
33
710
34
l m7 I-
750 35
800
36
8 50 37
38 900
l m9 I-
950 39
m 10
40 1000
1060 41
l I-
P 2.25 12
1120
42
43
1180
44 1250 P2 iP2 I
I I-
1320 45
1400
46
l m14 l -
1500 47
m 16 m16 1 m16
48 1600
I P 1.5 1700 49
50 1800
I m18 I -
1900 51
2000 m20 I m20 I
52
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IS0 / R 467 - 1966 (E)
1.2 Principal and derived series
-
-
Ratii 1.12
Ratio: 1.25 at11 1.H
Ratio: 1.6 Ratio : 1.4
ieriai
~ ~ -
~mbei
20/3/ R 20/3 4016 R 40/6 R 10 R 20,'2 140/3 R 20
R5 IR 1012~ R20/4 R 20/4
- -
-
I
nl
nl
O nl I
l
'24
P 24
1
l l
n1.12' n1.125
1 m 1.12 m1.125
2
3
n 1.25
m 1.2 n 1.25 n 1.2
4 ml .251
1
5
' 18 ' 18
6 P 18 ' 18
I
m 1.5 n 1.5
7
I
16
P 16 ' 16
8 '16 I
i
9
I
n 1.75 n 1.7 n 1.75
l 1 m 1.75
10
I 1.7
I
11
n2
n2
12 'm2 12
I
P 12
P 12
13
I
n 2.25 n 2.25
m2.25 m 2.25
14
l
15
n 2.5
n 2.5 n 2.5 n 2.5
16 112.51
17
'9
P9 '9 P9
18
m3
n3
19
P8 38
P8 P8
20
21
m 3.5 m 3.5 n 3.5
m3.5 m 3.5
22
23
n4 n4
n4 n4
24
P6 P6
25
n 4.5
m 4.5 rn 4.5 m 4.5
26
27
...