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IS0
IS0 R ECOM MEN DATI O N
R 702
SPINDLE NOSES AND FACE PLATES
TYPES A AND CAMLOCK
SIZES FOR INTERCHANGEABILITY
1st EDITION
March 1968
i
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 &herefore 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 702, Spindle noses und face plates-Types A und Cum-
lock-Sizes for interchangeability, was drawn up by Technical Committee ISO/TC 39,
Machine tools, the Secretariat of which is held by the Association Française de Normalisa-
tion (AFNOR).
Work on this question by the Technical Committee began in 1951 and led, in 1965,
to the adoption of a Draft IS0 Recommendation.
In February 1966, this Draft IS0 Recommendation (No. 931) 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:
Israel Switzerland
Belgium
Italy Turkey
Chile
Czechoslovakia Japan U.A.R.
Denmark Netherlands United Kingdom
France Poland U.S.A.
Portugal U.S.S.R.
Germany
Hungary Spain
India Sweden
No Member Body opposed the approval of the Draft.
The Draft IS0 Recommendation was then submitted by correspondence to the IS0
Council, which decided, in March 1968, to accept it as an IS0 RECOMMENDATION.
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IS0 / R 702 . 1968 (E)
CONTENTS
Page
. Scope .
1 . 5
2 . Interchangeability . 5
3.TypeA . 6
3.1 Spindle noses . 6
3.1.1 Sizes in millimetres . 7
3.1.2 Sizes in inches . 8
3.2 Face plates . . 9
3.2.1 Sizes in millimetres . . 11
................... 12
3.2.2 Sizes in inches .
4 . Type camlock . 13
4.1 Spindle noses . 13
4.1.1 Sizes in millimetres . 15
4.1.2 Sizes in inches . 16
4.2Cams . 17
4.2.1 Sizes in millimetres . 19
4.2.2 Sizes in inches . 20
............... ................. 21
4.3 Studs
................. 22
4.3.1 Sizes in millimetres .
4.3.2 Sizes in inches . . 22
23
4.4 Face plates .
4.4.1 Sizes in millimetres .
25
4.4.2 Sizes in inches .
26
........ . . 27
4.5 Accessories for spindle noses and face plates-type Camlock
4.5.1 Sizes in millimetres . . . 27
4.5.2 Sizes in inches . . . 28
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IS0 / R 702 - 1968 (E)
IS0 Recommendation R 702 March 1968
SPINDLE NOSES AND FACE PLATES
TYPES A AND CAMLOCK
SIZES FOR INTERCHANGEABILITY
1. SCOPE
This IS0 Recommendation is the first of a series of IS0 Recommendations specifying the sizes
for interchangeability for lathe spindle noses and face plates and covering the three types selected
for international standardization, i.e. A and Camlock types and bayonet type.
The first two types, which are presently in use in most countries, are the subject of this IS0
Recommendation, the third type being the subject of IS0 Recommendation R . . .,* Spindle
noses and.face plates-Bayonet type-Sizes .for interchangeability-Metric series.
2. INTERCHANGEABILITY
Although internal mounting components and assembly screws are not respectively interchange-
able, as they may conform with either metric or inch series, there is complete interchangeability
for the same type (A or Camlock) between metric spindle noses and face plates in inches and
vice versa.
* At present Draft IS0 Reconinicndation No. 1327.
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IS0 / R 702 - 1M8 (E)
3. TYPE A
3.1 Spindle noses - Type A
No. 3 No. 4
Nos. 5 to 11 Nos. 15 to 28
300
30" /
+
Dimension B is taken at the theoretical
point of intersection between the gene-
rating line of the cone and the face of
the flange
* f, for type A,, with inner bolt circle
f2 for type A,, without inner bolt circle
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IS0 / R 702 - 1968 (E)
3.1.1 Sizes in millimetres
Type A,: Two bolt circles with radius C and D
3 4 5 6 8 11 15 20 28 Tolerances
A 92 108 133 165 210 280 380 520 725
+ IT4
B 53.975 63.513 82.563 106.375 139.719 196.869 285.775 412.775 584.225
11 13 14 16 18 19 21 24
I I I I I I I
I H I>< I 14.25 I 15.9 I 19.05 I 23.8 I 28.6 I 34.9 I 41.3 I 50.8 I H8jh8 I
(l) 0.1 mm for Nos. 3 to 11 buttons and Tolerance of position (radial deviation with
fixing holes I respect to the theoretical position)
0.15 mm for Nos. 15 to 28
- 0.025 mm for Nos. 5 to 28
+ 0.023 mm for No. 28
O
NoTE.-General tolerance for untoleranced dimensions : 0.4 mm.
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IS0 / R 702 - 1968 (E)
3.1.2 Sizes in inches
Type A,: Two bolt circles with radius C and D
Type A,: Only the outer bolt circle with radius C
(Type A, for Nos. 3 and 4; types A, and A, for Nos. 5 to 28)
r\"--l31 Dimension 4 15 16
3 5/8 I 4 1/4 I 5 1/4 I 6 1/2 8 1/4 11 15 20 1/2 28 112
I l I
3.250 5 4.188 O
2.125 O 2.500 5 5.500 75 7.750 75 11.251 O 16.251 O 23.001 O 0)
1.391 1.625 2.062 5 2.625 3.375 4.625 6.500 9.125 12.750
1.218 75 1.625 O 2.187 5 3.250 O 4.875 O 7.250 O 10.437 5 (,)
E 718 1 1 3/8 1 5/8 1 7/8 2 1/4
518 314 1 1/8
0.562 5 0.625 0.687 5 10.750 I 0.812 51 0.875 1 1.000 1 (5) I
FI*
7/16 7/16 1/2 9/16 11/16 ' 3/4 13/16 15/16
F,*
518
H 0.562 5 0.625 0.750
0.937 5 I 1.125 I 1.375 I 1.625 I 2.000 I (4) I
I 3/16 3/16 3/16
7/16-14 7/16-14 7/16-14 1/2-13
J
UNC UNC UNC UNC
K 9/16 11/16
314 718
0.003 in for Nos. 4 to 8}
buttons
0.006 in for Nos. Il to 28
Tolerance of position (radial deviation
with respect to the theoretical position)
0.006 in for Nos. 3 to 8
fixing holes
0.008 in for Nos. 11 to 28 1
(3) + 0.000 25 in for No. 3
+ 0.000 5 in for Nos. 4 to 11
f 0.001 in for Nos. 15 to 28
i41 - 0.001 in for buttons
+ 0.002 in for button-holes
- 0.001 in for Nos. 5 to 28
NOTE.-General tolerance for untoleranced dimensions : i I /64 in.
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IS0 / R 702 - 1968 (E)
3.2 Face plates - Type A
Machining with two bolt cir-
Machining with inner bolt Machining with outer bolt
cles (for mounting either
circle (for mounting on spin- circle (for mounting on spin-
on spindle nose AZi or on
dle nose A, by means of its dle nose A,, or spindle nose
Aî by means of its outer bolt spindle nose Ai by means
inner bolt circle )
of inner or outer bolt circle)
circle)
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IS0 / R 702 - 1968 (E)
3.2.1 Sizes in millimetres
Three possible ways of machining (see figures, page 9).
11 15
280 380
+ + (IT4- (IT4-
584.225 584.225 IT3) IT3)
196.869 285.775 412.775 412.775
-IT3 -IT3 (2) (2)
117.5 165.1 231.8 231.8 1323.8 323.8 I (1) (l) I
I I
i
123.8 265.1 (1)
82.55 184.15
19.050 20.638 22.225 25.400 + 0.025
20 21 23 26 min.
___
16 17 19 22
29.4 35.7 42.1 51.6 + 0.1
10 IO
20 24
F, for type A,; Fz for type Al (and possibly for type A, also, if the face plate is rigid enough not to risk bending when the screws
on the inner bolt circle).
are clamped
(l) 0.1 mm for Nos. 3 to 11 buttons and Tolerance of position (radial deviation
0.15 mm for Nos. 15 to 28 I fixing holes with respect to the theoretical position)
NOTE.-General tolerance for untoleranced dimensions : $- 0.4 mm.
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IS0 / R 702 - 1968 (E)
3.2.2 Sizes in inches
Three possible ways of machining (see figures, page 9).
4 5 6 8 I 11 15 20 28 Tolerance
3 518 4 1/4 5 114 6 112 8 114 11 15 20 1/2 28 112
A i>(
B 2.125 O 2.500 5 3.250 3 4.187 8 5.500 55 7.750 55 11.250 5 16.250 5 23.000 O (3)
C 1.391 1.625 2.062 5 2.625 3.375 4.625 6.500 9.125 12.750 ('I
,. ,
D 1.218 75 1.625 O 2.187 5 3.250 O 4.875 O 7.250 O 10.437 5
F 0.562 5 0.62
...