International Organlzation for Standardization Case Postale 56 l CH-1211 Ger&ve 20 l Switzerland Prlnted In Switzerland ii Copyright International Organization for Standardization...
Trang 1INTERNATIONAL STANDARD
IS0
2795
Fourth edition 1991-11-01
and tolerances
Trang 2
`,,`,-`-`,,`,,`,`,,` -IS0 2795:1991(E)
Foreword
federation of national standards bodies (IS0 member bodies) The work
bodies casting a vote
0 IS0 1991
All rights reserved No part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanlcal, Including photocopying and microfilm, without
permisslon in writing from the publisher
International Organlzation for Standardization
Case Postale 56 l CH-1211 Ger&ve 20 l Switzerland
Prlnted In Switzerland
ii
Copyright International Organization for Standardization
Trang 3`,,`,-`-`,,`,,`,`,,` -IS0 2795:1991(E)
Introduction
same sizes being adopted for plain bearings made from other materials
Trang 4INTERNATIONAL STANDARD IS0 2795:1991(E)
Plain bearings - Sintered bushes - Dimensions and
tolerances
1 Scope
2 Normative references
Part 2: Tables of standard tolerance grades and limit
IS0 5755-1:1987, Sintered metal materials - Specifi-
3 Materials
shall conform to IS0 5755-1
4 Cylindrical bearings
See figure 1 and tables 1 and 2
1) See IS0 286-l and IS0 286-2 for the limit deviations and tolerance grades specified in this International Standard
Copyright International Organization for Standardization
Trang 5`,,`,-`-`,,`,,`,`,,` -IS0 2795:1991 (E)
Figure 1
Table 1
Dimensions In mllllmetres
Inside Ouklde diameter, D
diameter Lengthl)
d Normal series Thin seriest) L
1 3 - l-2
1,s 4 - l-2
2 5 - 2-3
2,5 6 - 2-3
3 6 5 3-4
4 8 7 3-4-6
5 9 8 4-5-8
6 10 9 4-6-10
7 11 10 5-E-10
8 12 II 6-E- I2
9 14 12 6-10-14
10 16 14 E-10-16
12 16 16 E- 12-20
14 20 16 10-14-20
15 21 19 lo- 15-25
16 22 ;: 12-16-25
18 24 12-l e-30
20 26 25 15-20-25-30
22 29 27 15-20-25-30
25 32 30 20-25-30-35
26 36 33(34) 20-25-30-40
30 38 35(36) 20-25-30-40
32 40 39 20-25-30-40
35 45 41 25-35-40-50
39 49 44 25-35-45-55
40 50 46 30-40-50-60
42 52 48 30-40-50-60
45 55 51 35-45-55-65
4% 58 55 35-50-70
50 60 58 35-50-70
55 65 63 40-55-70
60 72 66 50-60-70
1) As from inside diameter 20 m m (included), the last value for the
length is not applicable to the thin series,
2) Dimensions In parentheses shall be used as "2nd choice"
Table 2
Dimensions in mllllmetres Wall thickness
D-d
2
above up to and
Incl
Chamfer
c max
092
053
034
W
097
098
are given
of tolerances in the as-delivered state depend upon the characteristics of the materials and the manufacturing
methods, they should be discussed with the manufacturer
As-delivered:
r6 to ~7, for D Q 50 mm r7 to s8, for D > 50 mm
F7 to G7, for D si 50 mm F8 to G8, for I> > 50 mm
on the outside diameter, D):
t, = IT 9 for D Q 50 mm t2 = IT 10 for D > 50 mm insertion pin: in the range m5 to m6 Housing: H7
rigid):
H7, for II Q 50 mm H8, for D > 50 mm
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5 Flanged bearings
See figure 2 and tables 3 to 5
Figure 2
Table 3
Dimensions in milllmetres Inside
diameter
d
1
195
2 2,5
3
4
5
6
7
a
9
IO ::
15
16
18
0
9 ::
12
14
16
18
20
21
22
24
20 26
22 28
25 32
28 36
30 38
32 40
35 45
38 48
40 50
42 52
45 55
48 58
50 60
55 65
60 72
Normal series
12
13
14
25 :i
22
24
26
27
ii
32
34
39
44
It
55
58
60
62
65
60
70
75
84 Thin series
1
1 1,5 I,5 1,5
2
2
2
;
2x5
3
3
3
3
x
3 15-20-25-30
3 15-20-25-30 3,5 20-25-30
4 20-25-30
4 20-25-30
4 20-25-30
5 25-35-40
5 25-35-45
5 30-40-50
5 30-40-50
5 35-45-55
5 3550
5 35-50
5 40-55
6 50-60
Length
L
3-4-6 4-5-a 4-6-10 5-e-10 6-8-12 6-10-14 8-10-16 8-12-20 10-14-20 10-15-25 12-16-25 12-18-30
IO 14 18 2 8-10-16
12 16 20 2 8-12-20
14 18 22 2 10-14-20
15 19 23 2 10-15-25
16 20 24 2 12-16-25
10 22 26 2 12-18-30
20
22
25
25 30
I -
27 32
30 35
2,5 15-20-25
215 15-20-25 2,5 20-25-30
Copyright International Organization for Standardization
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Dimensions In milllmetres NOTE 2 Since the actual tolerances and combinations
Wall thickness
D-d
2
up to and Incl max
Chamfer
C
Table 5
Outside diameter I
above up to and Incl max
of tolerances in the as-delivered state depend upon the
characteristics of the materials and the manufacturing methods, they should be discussed with the manufacturer
As-delivered:
r6 to ~7, for D Q 50 mm r7 to ~8, for D > 50 mm
F7 to G7, for D Q 50 mm F8 to G8, for I> > 50 mm
Dimensions In mlllimetres - on flange diameter II,: js13
on the outside diameter, II):
I, = IT 9, for D Q 50 mm
1, = IT 10, for 11 > 50 mm Insertion pin: in the range m5 to m6 Housing: H7
rigid):
?
H7, for D Q 50 mm H8, for I) > 50 mm
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6 Spherical bearings
6.1 Dimensions
See figure 3 and table 6
Figure 3
sphere at the centre of the bearing length, the diameter
of which should be agreed between the user and the
manufacturer
Inside
diameter
n
1
185
2
23
i
5
6
7
a
9
10
10
12
14
15
16
18
20
Table 6
Dlmenslons In mllllmetres
Spherical
diameter
4
3 4,5
5
i
10
12
14
16
16
ia
ii
22
24
27
28
30
36
Length
L
9
IO
11
1:
1:
15
:;
20
20
25
Chamfer
C
max
Of3
OS5
6.2 Tolerances
Inside diameter, d: H7 Spherical diameter, D,: hll Bearing length, 22: js13 Tolerance for the housing diameter should normally
be HI0 but this depends on the method of assembly
5
Copyright International Organization for Standardization
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`,,`,-`-`,,`,,`,`,,` -IS0 2795:1991(E)
UDC 621.822.5:621.762.5
Descriptors: hearings, plain bearings, slntered products, dlmenslons, dimensional tolerances,
Price based on 5 paaes