This standard specifies the basic dimensions and tolerances of rotating shaft lip seals with shaft diameters ranging from 6 to 400 mm and corresponding sealant inner hole diameters from 16 to 440 mm. In order to ensure the interchangeability of sealing rings produced by different manufacturers, this standard also specifies the dimensions and tolerances of the shaft and mounting holes. This standard is applicable to sealing rings with working pressure equal to or less than 0.05MPa, and is not applicable to higher working pressures. GB 13871-1992 Basic dimensions and tolerances of rotary shaft lip seals GB13871-1992 Standard download and decompression password: www.bzxz.net

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National Standard of the People's Republic of China
Rotary shaft lip seals
Basic dimensions and tolerances
Rotary shaft lip type seals---Nominaldimensions and tolerances||tt| |GB13871-92
This standard is equivalent to the international standard ISO6194/1-1982 "Rotating shaft lip seals - Part 1: Basic dimensions and specifications 1 Subject content and scope of application
This The standard stipulates the basic dimensions and tolerances of rotating shaft lip seals (hereinafter referred to as seals) with shaft diameters ranging from 6 to 400 mm and corresponding seal cavity (hereinafter referred to as cavity) inner hole diameters from 16 to 440 mm. In order to ensure the interchangeability of sealing rings produced by different manufacturers, this standard also specifies the dimensions and tolerances of the shaft and mounting holes. This standard is applicable to sealing rings with working pressure equal to or less than 0.05MPa, and is not applicable to higher working pressures. In order to ensure that the sealing rings provided by the manufacturer can meet the design and use requirements, Appendix A of this standard recommends the report format for the sealing rings used in signing an agreement for both parties.
2 cited standards
GB1031 surface roughness parameters and their values ??GB1801 tolerance and fit size to 500mm hole, shaft tolerance zone and fit GB3858 hydraulic and pneumatic terminology
GB5719 rubber sealing product terminology
3 Terms and codes
3.1 Terminology
See GB3858 for the definitions of terms used in this standard. See GB5719 for the definition of special terms for sealing rings. 3.2 Letter codes
The letter codes used in this standard are as follows:
The basic diameter of the shaft used in conjunction with the sealing ring; d,
d. The minimum diameter of the shaft introduction chamfer:
I) The basic diameter of the cavity inner hole and the basic outer diameter of the sealing ring; the basic width of the sealing ring, which is related to the depth of the cavity inner hole. 4 Types and specifications
4.1 The six basic types and codes of sealing rings specified in this standard are shown in Figure 1. The State Bureau of Technical Supervision approved the implementation on 1993-10-01 on December 12, 1992
B type
Inner skeleton type
FB type
With sub-marriage inner bone type| |tt||GB13871-92
W type
outer capsule skeleton type
FW type
with secondary fragrance external skeleton type
Z type|| tt | The basic inner diameter of the ring (the basic diameter of the shaft,) and the basic outer diameter (the diameter of the cavity inner hole D) are expressed in Table 1.
Table 1 Specification code
d /rnem
6
70
400
D/mm
16| |tt||90
440
4.3 The marking symbol of the sealing ring consists of the type code, specification code and standard number. 5Basic dimensions
The basic dimensions of the sealing ring are listed in Table 2.
Specification code
006016
070090
400440
d,
6
8
9
10
10
12
12
12
15
15
15|| tt||16
(16)
18
18
20
20
20
22|| tt||22
22
25
25
25
28
28
30||tt| |30
mnrm
(30)15
30
32
32
32
35||tt ||35
35
38
38
38
40
(4033
40||tt| |42
H
0
16
22
22
22
24
22
22
25
24
25
30
26
30
35|| tt||30
35
30
35bZxz.net
35
40
45
35||tt| |40
47
40
47
52
40
47
52
42
47
50
52
45
47
52
50
52|| tt||55
52
58
62
55
60
62
55||tt| |G13871—92
Basic dimensions of the sealing ring
Installation 2
d
42
45
45||tt| |50
(50
50
55
(55)
55
60
60||tt ||65
65
70
70
75
75
30
80
85
85
(90
90
95
100
(105)12
110||tt ||120
130
140
150
160
170
180
190
200
22
240
(250)1
260
8
280
300||tt| |320
340
360
380
400
D
62
62
65
68
70
72
72
75
80
80
85|| tt||85
90
90
95
95
100
100
110||tt| |110
120
115
120
120
125
130
140
150
160
170
180
190
200
210
220
230|| tt||250
270
290
300
320
340
360
380||tt| |400
420
440
8
10
12
15
20
mm
Adoption instructions:
11 Taking into account the actual domestic situation, in addition to all the basic dimensions of international standards, several commonly used domestic specifications are also supplemented, and parentheses are added to indicate the difference.
113
6 axis
GB13871--92
6.1 Lead chamfer The shaft end should have a lead chamfer that complies with the requirements of Figure 2 and Table 3. There should be no burrs, sharp corners, or rough machining marks on the chamfer.
30° (maximum)
Figure 2 Shaft introduction chamfer
: Shaft introduction chamfer
Table 3
Shaft diameter d||tt| |d≤10
1020
20,≤30
30d_≤40
40
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