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Ref. No.: ISO/R 15/1- 1968 (E)
IS0
I N T ERN AT I O N A L ORGAN I ZAT I ON FOR STAN DARD I2 AT I ON
IS0 RECOMMENDATION
R 15
PART I
ROLLING BEARINGS
RADIAL BEARINGS
BOUNDARY DIMENSIONS
GENERAL PLAN
Diameter Series 8, 9, O, 1, 2, 3 and 4
2nd EDITION
December 1968
This second edition supersedes section 1 of IS0 Recommendation R 15 - 1955
and section 1 of IS0 Recommendation R 104-1959.
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 ISQ.
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 15, Part I, Rolling bearings - Radial bearings - Boundary
dimensions - General plan - Diameter Series 8, 9, O, 1, 2, 3 and 4, was drawn up by Technical
Committee ISO/TC 4, Rolling bearings, the Secretariat of which is held by the Sveriges Standar-
diseringskommission (SIS).
This IS0 Recommendation cancels and replaces section 1 of IS0 Recommendation
R 15-1955, Ball and roller bearings, and section 1 of IS0 Recommendation R 104-1959, Ball and
roller bearings - Boundary dimensions.
Work on this question by the Techniaal Committee began in 1955 and led, in 1963, to the
adoption of a Draft IS0 Recommendation.
In April 1964, this Draft IS0 Recommendation (No. 358) 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 Spain
Hungary
Australia India Sweden
Austria Israel Switzerland
Canada Italy Turkey
Chile Japan United Kingdom
Colombia Korea, Rep. of U.S.A.
Netherlands U.S.S.R.
Czechoslovakia
France Poland Yugoslavia
Germany Portugal
Greece Romania
No Member Body opposed the approval of the Draft.
The Draft IS0 Recommendation was then submitted by correspondence to the IS0
Q
Council, which decided, in November 1967, to accept it as an IS0 Recommendation.
The validity of the vote was however called into question, owing to the fact that the text
placed before the Council included two new widths which had not been submitted to all IS0
Member Bodies for prior approval. Acceptance of the Draft was therefore rescinded.
When voting on the two new values in May 1968, a majority of the Member Bodies approved
them. No negative ballot was recorded.
The Draft IS0 Recommendation was then re-submitted by correspondence to the IS0
Council, which decided, in December 1968, to accept the document as an IS0 RECOMMEN-
DATION.
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0 ISO/R 15/11 1968 (E)
IS0 Recommendation R 15 Decem ber 1968
PART I
ROLLING BEARINGS
RADIAL BEARINGS
BOUNDARY DIMENSIONS
GENERAL PLAN
Diameter Series 8, 9, O, 1, 2, 3 and 4
INTRODUCTION
1. The object of the General Plan is to reduce the number of radial bearing sizes enough to
ensure economic production and yet to provide a sufficient number of sizes to satisfy present
and future needs of bearing users. These needs are very comprehensive and varying.
Therefore the Plan has to embrace a wide range of numerically determined sizes and pro-
portions and may even be extended by IS0 in accordance with the general rules given in
section 3.
2. The General Plan is to be considered as a guide for national standardizing organizations.
National standards can with advantage cover a restricted range of sizes, but refer to this
IS0 Recommendation as the rational source of any extension. Especially when standardiz-
ing sizes of particular bearing types, national organizations should consider their standards
very carefully with a view to keeping the number of bearing sizes as small as is compatible
with a good overall national economy, excluding sizes not manufactured and not required
Ca
for the time being.
Bearing manufacturers should select from the national standard the sizes and proportions
appropriate to the bearing type and to the purpose under consideration.
Bearing users should select bearing types and sizes from the manufacturers specifications,
giving preference to bearings whose dimensions conform to the national standard. As all
bearings may not be in current production at any particular time, it is advisable for user
designers to approach bearing manufacturers during the early stages of design for informa-
tion regarding the availability of the bearings.
3. The General Plan comprises
(U) numerically determined nominal boundary dimensions (see section 2, Tables 1 to 7);
(b) general rules for the extension of the Plan (see section 3).
The General Plan does not contain any directions pertaining to the internal design of bearings
or any indication as to their availability.
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ISO/R 15/1 -IW(E)
4. The chamfer dimensions given in Tables 1 to 7 do not necessarily apply to
(U) the groove side of bearing rings with snap ring groove,
(b) the flangeless side of thin cylindrical roller-bearing rings,
(c) the non-thrust side of angular contact bearing rings,
(d) inner rings of bearings with tapered bore.
5. This IS0 Recommendation does not apply to tapered roller-bearings.
1. SYMBOLS
d = bearing bore diameter
- --
-0
cl
D = bearing outside diameter
6 = bearing width (individual inner and outer rings)
r
r = inner and outer ring chamfer dimension
r nominal = nominal chamfer dimension*
* Nominal chamfer dimensions do not control the shape of the bearing corner, i.e. the profile of the bearing corners
created by the chamfering or rounding off.
I
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a.
ISO/R 15/11 1968 (E)
2. NUMERICALLY DETERMINED BOUNDARY DIMENSIONS
2.1 Diameter series 8
TABLE 1
Dimensions in millimetres
- -
Dimension series
Bore htside
O8 18 I 28 I 38 I 48 I 58 68 O8 I 18-68
liameter Uameter
Width
Chamfer
d D
B
rnominal
-
- - - - - - - - -
- - - - - -
2.5 1 1.4
0.6 0.15
- - - - - -
1 3 1 1.5 0.15
-
- - - - -
1.2 2
1.5 4 0.2
- - - - - -
2 5 1.5 2.3 0.2
- -
- - - -
1.8
2.5 6 2.6 0.3
- -
- - - -
2 3 0.3
3 7
- - - - -
4 9 2.5 3.5 4 0.3
._ - -
- -
11 3 5 0.3
5 4
- - - - -
6 3.5 5 6 0.3
- - -
- -
2- 3.5 5 6 0.3
7
- -
- -
16 4 6 8 0.4
8 5
- - - -
9 17 4 5 6 8 0.4
- -
- -
5 6 9 0.5
10 19 7
- -
- 9
12 21 5 6 7 0.5
- -
- -
5 9 0.5
15 24 6 7
- -
- -
5 7 9 0.5
17 26 6
12
20 32 4 7 8 10 16 22 0.5 0.5
-
-
7 10 16 22 0.5 0.5
22 34 4
12 0.5
25 37 4 7 8 16 22 0.5
10
- -
0.5 0.5
28 40 4 7 10 16 22
4 7 8 10 12 16 22 0.5 0.5
30 42
-
-
22 O. 5 0.5
32 44 4 7 10 16
7 8 10 12 16 22 O. 5 0.5
35 47 4
4 7 8 10 12 16 22 0.5 0.5
40 52
13 23 0.5 O. 5
45 58 4 7 8 10 18
7 10 12 15 20 27 0.5 0.5
50 65 5
Q
17 30 0.5 0.5
72 7 9 11 13 23
55
10 12 18 24 32 0.5 0.5
60 78 7 14
1
85 7 10 13 15 20 27 36 0.5
65
20 27 36 0.5 1
70 90 8 10 13 15
1
8 10 13 15 20 27 36 0.5
75
95 .
20 27 36 0.5 1
80 100 8 10 13 15
1.5
9 13 16 19 25 34 45 O. 5
85 110
45 0.5 1.5
9 13 16 19 25 34
90 115
16 19 25 34 45 O. 5 1.5
% 120 9 13
45 0.5 1.5
9 13 16 19 25 34
100 125
1.5
25 34 45 0.5
130 9 13 16 19
105
54 1 1.5
16 19 23 30 40
110 140 10
1 1.5
16 19 23 30 40 54
120 150 10
2
22 26 35 46 63 1
165 11 18
130
35 46 63 1 2
175 11 18 22 26
140
1 2
24 30 40 54 71
150 190 13 20
2
40 54 71 1
13 20 24 30
160 290
1 2
27 34 45 60 80
215 14 22
170
80 1 2
225 14 22 27 34 45 60
180
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ISO/R 15/1- 19W (E) ,
I
TABLE 1 (concluded)
Dimensions in millimetres
I Dimension series
Bore
Outside
I O8 1 18 I 28 I 38 1 48 1 58 1 68 I
OS I 18-68 I
diameter diameter
Width
Chamfer
d
B
rnomins1
ID
I
190 240 16
24 30 37 50 67 90 1.5 2.5
200 250 16 24 30 37 50 67 90 1.5
2.5
220
270 16 24 30 37 50 67 90 1.5 2.5
240 300 19 28 36 45 80 1 O9 1.5 3
60
260
320 19 28 36 45 60 80 109 1.5 3
280
350 22 33 42 52 69 95 125 2 3
300 380 25 38 48 60 80 109 145 2.5 3.5
320 400 25 38 48 60
80 1 O9 145 2.5 3.5
340 420 25 38 48 60 80 1 O9 145 2.5 3.5
360 25 38 48 60 3.5
440 80 1 O9 145 ,2.5
380 480 31 46 60 75 100 136 180 3 3.5
400 500 31 46 60 75 100 136 180 3 3.5
420 520 31 46 60 75 1 O0 136 180 3 3.5
440 540 31 46 60 75 1 O0 180 3 3.5
136
460 580 37 56 72 90 118 160 21 8 3.5 4
480 600 37 56 72 90 118 160 218 3.5
500 72 3.5
620 37 56 90 118 160 218
530 650 37 56 72 90 118 160 218 3.5
72 3.5
560 680 37 56 90 118 160 218
600 730 42 60 78 98 128 175 236 4
630 780 48 69 88 112 150 200 272
670 820 48 88 112 272
69 150 200
710 870 50 74 95 118 1 60 218 290
750 920 54 78 100 128 230 308
170
800 980 57 82 106 136 180 243 325
850 1030 57 82 106 136 180 243 325
60 112 140
900 1090 85 190 258 345
950 1150 63 90 118 150 200 272 355
1000 1220 71 1 O0 128 165 218 300 400
O
1060 1280 71 1 O0 128 165 218 300 400
1120 1360 78 106 140 180 243 325 438 8
1180 1420 78 106 180 243 325 438 8
140
8
1250 1500 80 112 145 185 250 335 450
1320 1600 88 122 165 206 280 375 500 8
10
1400 1700 95 132 175 224 300 400 545
10
1500 1820 140 185 243 315
155 1 200 265 345 10
1600 1950
10
1700 2060 160 206 272 355
21 8 290 375 12
1800 2180 165
12
1900 2300 175 230 300 400
12
190 250 325 425
2000 2430
l-
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ISO/R 15/1- 1968 (E)
2.2 Diameter series 9
TABLE 2
Dimensions in millimetres
Dimension series
Bore Outside
09 I 19 1 29 1 39
49 I 59 I 69 O9 1 19-69
diameter diameter
Width
Chamfer
d
D
B
rnominal
- - - - - - -
- - - - - -
1 4 1 .t 2.3 0.2
-
- - - - -
2 2.6
1.5 O. 3
,5
- - -I, - - -
2 6 2.: 3
0.3
- - -
- - -
2.5 7 2.t 3.5
O. 3
- - - - - -
3 8 3 4 0.3
- - - - - -
4 11 4 5 0.3
-
- - - -
5 13 4 6 10 0.4
- - - - -
7
'6 15 5 10 0.4
-
- - - -
7 17 5 7 10 0.5
c3
- - - - -
8 19 6 9 11 0.5
- - - - -
9 20 6 9 11 0.5
- -
10 6 8 10 13 16 22 0.5
22
- -
6
12 24 8 10 13 16 22 0.5
- -
15 7 8.5 10 13 18 23 0.5
28
- -
7
17 30 8.5 10 13 18 23 0.5
13
20 37 7 9 11 17 23 30 0.5 0.5
22 7 9 13 17 30 0.5 O. 5
39 11 23
25 42 7 9 11 13 17 23 30 0.5 0.5
28 7 9 13 30 0.5 0.5
45 11 17 23
30 7 9 13 30 O. 5 0.5
47 11 17 23
32 52 7 10 13 15 20 21 36 0.5 1
35 7 10 13 15 20 27 36 O. 5 1
55
40 12 16 1
62 8 14 22 30 40 0.5
45 68 8 12 14 16 22 30 40 0.5 1
50 12 16 22 40 0.5 1
72 8 14 30
55 80 9 13 16 19 25 34 45 0.5 1.5
60 13 16 19 25 34 45 0.5 1.5
85 9
65 90 9 13 16 19 25 34 45 0.5 1.5
O
23 1
70 100 10 16 19 30 40 54 1.5
75 16 19 23 30 40 54 1 1.5
105 10
1
80 110 10 16 19 23 30 40 54 1.5
85 120 11 18 22 26 35 46 63 1 2
18 26 63 1 2
90 125 11 22 35 46
26 63 1 2
95 130 11 18 22 35 46
100 13 20 30 40 54 71 1 2
140 24
30 40 71 1 2
105 145 13 20 24 54
20 24 30 40 54 71 1 2
110 150 13
80 1 2
120 165 14 22 27 34 45 60
90 1.5 2.5
130 180 16 24 30 37 50 67
24 37 50 67 90 1.5 2.5
140 190 16 30
109 1.5 3
150 210 19 28 36 45 60 80
28 45 60 80 109 1.5 3
160 220 19 36
45 60 80 109 1.5 3
170 230 19 28 36
52 69 95 125 2 3
180 250 22 33 42
-7-
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TABLE 2 (concluded)
Dimensions in millimetres
Dimension series
Bore Outside
O9 1 19 1 29 I 39 1 49 1 59 I 69
O9 1 19-69
diameter diameter
Width
Chamfer
d
D
B
rnornlnnl
- - - -
-
190 42
260 22 33 52 69 95 125
2 3
200 280 25 38 48 60 1 O9
80 145 2.5 3.5
220
300 25 38 48 60 80 1 O9 2.5
145 3.5
240 320 25 38 48 80 1 O9
60 145 2.5 3.5
260 60
360 31 46 75 100 136 180 3 3.5
280 60
3 80 31 46 75 100 136 180 3 3.5
300 420 37 56 72 90 118 160
218 3.5 4
320 440 37 56 12 90 118 160 21 8 3.5 4
340 460 37 56 72 160
90 118 21 8 3.5 4
O
360 480 37 56 72 90 118 160 218 3.5 4
82
380 520 44 65 106 140 190 250 4 5
400 540 44 65 82 140 190 4
106 250 5
82
420 560 44 65 106 140 190 250 4 5
440 600 50 74 95 160 218 5
118 290 5
95
460 620 50 74 118 160 21 8 290 5 5
100
480 650 54 78 128 170 230 308 5 6
500 670 54 78 100 128 170 230 5
308 6
106
530 710 57 82 136 180 243 325 5 6
560 112 258 6
750 60 85 140 190 345 6
600 800 63 90 118 150 200 272 355 6 6
630 850 71 100 128 165 21 8 300 400 6 8
136 308
670 900 73 103 170 230 412 6 8
710 78 106 140 180 243 325 6 8
950 43 8
335
750 loo0 80 112 145 185 250 450 8 8
800 1060 82 115 150 258 355 8 8
195 462
850 1120 85 118 155 200 272 365 8 8
488
88 122 165 375 8
900 1180 206 280 500 8
950 1250 95 132 175 224 300 400 545 8 10
103 140 185 438 8
1000 1320 236 315 580 10
O
1060 1400 109 150 195 250 335 462 615 10 10
1120 1460 109 150 195 250 335 462 615 10 10
206 488 10 10
1180 1540 115 160 272 355 650
1250 1630 122 170 218 280 375 515 690 10 10
230 710 10 10
1320 1720 128 175 300 400 545
- - -
- 185
1400 1820 243 315 425 12
- - -
- 195
1500 1950 258 335 450 12
-
- -
- 200 12
1600 2060 265 345 462
- - -
- 212
1700 2180 280 355 475 12
-
- -
- 218 15
1800 2300 290 375 500
- - -
1900 2430 - 230 308 400 530 15
- - - - -
-8-
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ISO/R 15/11 1968 (E)
2.3 Diameter series O
TABLE 3
Dimensions in millimetres
Dimension series
Bore Outside
O0 I 10 1 20 I 30 I 40 I 50 1 60
O0 I 10-60
diameter diameter
Width
Chamfer
d D
B
rnominal
- - - - - -
- -
- - - -
1 .5 6 2.5 3
0.3
- - - - - -
2 7 2.8 3.5 0.3
- - -
...