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Ref. No. : ISO/R 1117-1969 (E)
UDC 621.922 - 181
IS0
I N T ERN AT I ON A L ORGAN i Z ATi O N FOR S TA N DA RD iZATl O N
I SO R ECO M M EN DATI O N
R 1117
BONDED ABRASIVE PRODUCTS
GRINDING WHEEL DIMENSIONS
(PART 2)
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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BRIEF HISTORY
The IS0 Recommendation R 1 1 17, Bonded abrasive products - Grinding wheel dimensions (Part 2), was
drawn up by Technical Committee ISO/TC 29, Small tools, the Secretariat of which is held by the Association
Française de Normalisation (AFNOR).
Work on this question led to the adoption of a Draft IS0 Recommendation.
In June 1968, this Draft IS0 Recommendation (No. 1596) 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 :
Australia Italy Switzerland
Belgium Japan Thailand
Czechoslovakia Netherlands Turkey
France New Zealand U.A.R.
Germany
Peru United Kingdom
Greece U.S.A.
Poland
Hungary Portugal
U.S.S.R.
India South Africa, Rep. of Yugoslavia
Ireland Spain
Israel 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 September 1969, to accept it as an IS0 RECOMMENDATION.
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CONTENTS
Introduction .
................................ 5
1 . Threaded insert disks . 6
1.1 Dimensions . 6
1.1.1 Workpieces held in hand . 6
1 . 1 . 2 Workpieces held mechanically . 6
1.2 Drilling . 7
1.2.1 Drillings : metric series . 8
1.2.2 Drillings : inch series . 15
2 . Wheels for tool and cutter grinding . 22
- Type 1 . 22
2.1 Plain wheels
2.2 Straight cup wheels - Type 6 . 22
2.3 Taper cup wheels - Type 11 . 23
2.4 Dish wheels - Type 12 . 23
3 . Internal grinding wheels . 24
3.1 Plain wheels - Type 1 . 24
3.2 Wheels with one recess - Type 5 . 25
4 . Cutting off wheels with fabric reinforcements . 26
5 . Segments of isosceles trapezoidal sections . 26
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ISO/R 1117-1969 (E)
-5-
.,
IS0 Recommendation R 1117 September 1969
BONDED ABRASIVE PRODUCTS
GRINDING WHEEL DIMENSIONS
(PART 2)
!NTRODUCTION
This IS0 Recornmendation is i1 continuation of 1SO Recommendation R 603, Bonded abrasive products - Grinding
wheel diniefisions (Part 1 j.
Save for the exceptions indicated by a reference mark, the dimensions retained for the wheels specified in this
IS0 Recommeridation are those provided in IS0 Recommendation R 525, Bonded abrasive products - General
features - Designation - Ranges of dimensions - Projïles and in its Addendum 1, Dimensions of the wheel holes
for special applicatiors and tolerances.
The numerical values retained in this IS0 Recommendation are given in both systems of units (metric and inch).
The holes being identical, wheels of the metric series and those of the inch series can be mounted on the same
machines; however, the overall dimensions possibly being slightly different, wheels of both series can only be consid-
ered as equiva!ent.
The symbols for dimensions used in the figures and tables are those provided in IS0 Recommenda:ion R 603. They
may be redaced in national standards by those in conformity with the rules prevailing in the country concerned,
until internationa: agreement regarding a single reference system is reached.
The figures accompanying the tables are only rough sketches which permit reference to the useful dimensions;
particularly, for cup grinding wheels and for plain grinding wheeis with a recess, the inset angles should be replaced by
a fillet to avoid any initiation of rupture, but permitting, however, correct application of the pieces on the shaft.
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P
-6- ISO/R 1117-1969 (E)
1. THREADED INSERT DISKS
I. 1 Dimensions
Drillings, see clause 1.2
I .i .i Workpieces held in hand
r 1
Dimensions in inches
Dimensions in millimetres
E
E
Drilling
Drilling
Speed Speed
Speed Speed
See
D not higher See D not higher
1.2
clause
exceeding than
exceeding than clause 1.2
115 ft/s 115 ft/s
35 m/s 35 m/s
3 O0 12
14
350
16
400
450 50 18 2
20
5 O0
Nuts Nuts
600 50 24 2
4 UNC
M10
750 30
36
900
1060 42
53*
1346*
1829* 72*
1.1.2 Workpieces held mechanically - Speed not exceeding 35 mis (1 15 ft/s).
Dimensions in millimetres Dimensions in inches
Drillings
Drillings
D E
D E
1.2 See clause 1.2
See clause
3 O0
350
400
90*
Nuts
Nuts
600
M10 A UNC
8
1346*
1829* I I 72* ]
1
*
Dimensions not included in IS0 Recommendation R 525, Bonded abrasive products - General features - Designation - Ranges
of dimensions - Profiles.
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-7- ISO/R 1117-1969 (E
1.2 Driiiing
The drawings on pages 8 to 21 correspond to the drillings and to the boring of the fixing plate seen from
the face.
Some of the nuts may be omitted in the wheels but it is recommended that such as are used should
correspond to one point of the drillings provided for.
For wheels with a diameter D of 300, 350,400,450, 500,600 and 750 mm, or of 12, 14, 16, 18,20,
24 and 30 in, the nuts are equally spaced on the corresponding circle.
The dimensions of the nuts should be indicated on the wheels.
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-8- ISO/R 1117-1969 (E)
1.2.1 Drillings : metric series
Dimensions in millimetres
D = 300,350 and 400 mm
Number of holes
I @ 1 120.65 I 3at 120" I
I @ 1 266.70 I 6at 60" I
D = 300 mm
Number of holes
I @ 1 177.80 I 4at 90" I
304.80 8 at 45"
@
D = 350 mm
Drilling circles
Number of holes
I Indexes Diameters
I @ I 19OSO I 5at 72" I
323.85 10 at 36"
@
I
D = 400 mm
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ISO/R 1117-1%9 (E)
-9-
Dimensions in millimetres
D = 450,500 and 600 mm
I
Number of holes
@ 1 101.60 I 3at 120"
@ 1 203.20 1 5 at 72"
I
@ I 279.40 I 5 at 72"
@ I 374.65 I 10at 36"
l
D = 450 rnrn
Drilling circles
Number of holes
3 at 120"
@ 304.80 6 at 60"
I @ I 431.80 1 12at 30" 1
D = 500 rnm
Drilling circles
Number of holes
6 at 60"
I I
@ I 330.20 I 6 at 60"
I I
@ I 457.20 I 6 at 60"
@ 558.80 12 at 30"
A
D = 600 mm
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Dimensions in millimetres
D = 750 mm
Drilling circles
Number of holes
I
I @ I 107.95 I 3 at 120" I
@ 279.40 8 at 45"
I @ I 457.20 I 12at 30" I
@ 558.80 12at 30"
I @ I 673.10 I 16at 22'30' I
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ISO/R 1117-1969 (E)
- 11 -
Dimensions in millimetres
D = 900 mm
248.87
181.51
a
*
I l57*09 h
p-4 63.99
I \
.
148.55
I Drilling circles I I
Indexes
diameters
330.2
508.0
711.2 I 16 I
Io
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