Some standard content:
ICS.21. 120. 20
National Standard of the People's Republic of China
GB/T52722002
Replaces GB/T5272-1985
Coupling with elastic spider2002-09-13 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
2003~04-01Implementation
GB/T5272—2002
This standard is a revision of GB/T5272-
2—1985 "Plum blossom elastic coupling". The main differences between this standard and GB/T5272-1985 are: GB/T1.1-2000 is implemented; 1 recommended shaft hole length is added for each specification; marking examples are added: thermoplastic rubber is cancelled, and the hardness and material of the elastic element are adjusted; the mass and moment of inertia of the coupling are calculated based on the material of cast steel, the smallest shaft hole, and L recommendation; Appendix A "Instructions for the selection of couplings" and Appendix B "Materials of elastic parts" are cancelled. From the date of entry into force, this standard will replace GB/T5272-1985. This standard is proposed and managed by the National Technical Committee for Standardization of Machine Shafts and Accessories. The drafting units of this standard are: Mechanical Science Research Institute, Zhejiang Xianju Coupling Factory, Zhejiang Zhuji Chain General Factory. The main drafters of this standard are: Zhou Mingheng, Wang Xinhua, Ming Cuixin, Guo Wansong. 254
1 Scope
Plum blossom elastic coupling
GB/T 5272—2002
This standard specifies the types and parameters, technical requirements, test methods, inspection rules, marking, packaging and storage of LM, LMD, LMS, LMZ-I and IMZ-Ⅱ plum blossom elastic couplings (hereinafter referred to as couplings). This standard is applicable to transmission shaft systems that connect two coaxial lines, have certain compensation for relative offset between the two shafts and general vibration reduction performance, and have an operating temperature of -35C~+80C and a nominal torque of 16N·m~25000N·m. 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For all the referenced documents with a date, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any un-dated referenced documents, the latest version shall apply to this standard. GB/T93-1987 Standard spring washers
GB191-2000 Pictorial symbols for packaging, storage and transportation (eqvISO780:1997) GB/T 528---1998
GB/T 531--1999
Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber (eqv1S0)37:1994) Rubber pocket hardness test method for indentation hardness (idtISO7619:1986) GB/T700-1988 Carbon structural steelwwW.bzxz.Net
GB/T 1040--1992
GB/T 1041--1992
GB/T 1043--1993
GB/T 1681—1991
GB/T 2411--1980
Test method for tensile properties of plastics
Test method for compression properties of plastics (idtIS0604:1973)Test method for simply supported beam impact of rigid plastics (neqIS(179:1982)Determination of rebound resilience of vulcanized rubber (eqvISO4662:1986)Test method for Shore hardness of plastics (eqvISO868:1978) GB/T 3098. 1---
GB/T 3098. 2 -- 2000
GB/T 3852--1997
GB/T 4879
--1999
GB/T 6388-
GB/T 6557--1999
GB/T 11352—1989
GB/T 12458-
Mechanical properties of fasteners Bolts, screws and studs (idtISO898-1:1999) Mechanical properties of fasteners Nuts coarse thread (idtISO898-2:1992) Coupling shaft hole and connection type and size (negISO/R775:1969) Rust-proof packaging
Transport packaging delivery and receipt mark
Methods and criteria for mechanical balancing of flexible rotors (idtISO11342:1998) Carbon steel castings for general engineering (neqISO3755:1975) Classification of mechanical couplings
GB/T 13384--1992
3 Classification
3.1 Type
General technical conditions for packaging of electromechanical products
Couplings are divided into five types, see Table 1.
GB/T 5272—2002
LMID type
LMS type
LMZ-I type
Basic type
Single flange type
Double flange type
Table 1 Coupling type
Split brake wheel type
Integral brake wheel type
3.2 Model and mark
The model and mark of the coupling shall comply with the provisions of GB/T12458. 3.2.1 Model indication method
Model example:
Specification code
Structural type code
Variety code
——Group code
GB/T 5272:--2002
Example 1: The model of the basic plum blossom-shaped elastic coupling with a nominal torque of 100N·m and elastic part a is: LM3, and the model of the elastic part is: MT3-a
Example 2: The model of the integral brake wheel type plum blossom-shaped elastic coupling with a nominal torque of 12500N·m and elastic part b is: LMZ12-I630, and the model of the elastic part is: MT12-b. 3.2.2 Marking method
Actuating end shaft hole type code
Moving end keyway type code
Moving end shaft hole diameter, nm
Moving end shaft hole matching length, mm
Elastic part model
Standard number
Driven end shaft hole matching length, mm
Driven end shaft hole diameter, mm
Driven end keyway type code
Driven end shaft hole type code
Coupling model and name (abbreviation: coupling) marking example:
Example 1: LM3 plum blossom elastic coupling, MT3 elastic part is a. Driving end: Type B shaft hole, Type A keyway, shaft hole diameter d.=30mm, shaft hole length L recommended to be 40mm; driven end: Y shaft hole, Type B keyway, shaft hole diameter d.=25mm, shaft hole length L recommended to be 40mmLM3 coupling YB25×40
ZA30X40
MT3aGB/T5272-2002
Example 2: LMZ121630 brake wheel plum blossom elastic coupling, MT12 elastic part is b. Active end: Z-type shaft hole. A-type keyway, shaft hole diameter d = 110mm, shaft hole length L is recommended to be 115mm; 257
GB/T 5272—2002
Driven end: Z-type shaft hole, A-type keyway, shaft hole diameter d, = 125mm, shaft hole length 1. Can be sampled = 115mm, brake wheel diameter Ds = 630 mm
11X MT12-b GB/T 5272~2002
LMZ12-I -630 type coupling will be 125
3.3 Structural type, basic parameters and main dimensions The shaft hole type shall comply with the provisions of GB/T3852, and the shaft hole length is preferably recommended to be L. 3.3.1 The structural type, basic parameters and main dimensions of the LM coupling shall comply with the provisions of Figure 1 and Table 2. 3.3.2 The structural type, basic parameters and main dimensions of LMD) type single flange coupling shall comply with the provisions of Figure 2 and Table 3. Mark
1, 3-
Y-type shaft hole
L (L recommended)
Half coupling;
Elastic element.
Y-type shaft hole
Type shaft hole
Mark L (L. Recommended
1.4 Half coupling
Elastic parts;
3 Flange connection parts;
5, 6, 7 Bolts, nuts, washers.
L (L recommended)
7-type shaft hole, J-type shaft hole
Figure 1LM type coupling
(push)
Y-type shaft hole
2. Type shaft hole
Figure 2LMD type coupling
Nominal torque T.
Hardness of elastic parts
Ir/min
80±5160±5
IM81120
15 300
Table 2 Basic parameters and main dimensions of LM type coupling Shaft hole length
Shaft hole diameter
12, 14
16, 18, 19
20, 22, 24
16, 18, 19
20, 22, 24
25, 28
20, 22, 24
1090025.28
30, 32
22, 24
25, 28
30, 32, 35, 38
25, 28
730030, 32, 35, 38
40, 42, 45
30, 32, 35.38
10, 42, 45, 48
3 5°, 38
40, 42', 45, 48, 50, 55
45, 48＇, 50, 55, 56
60, 63, 65
50', 55', 56\
LM918003 5503 80060.63.65.70.71.7580
60°, 63*, 65°, 70, 71,
LM102800
80.85, 90.95
Y type JZ type
GB/T 5272--2002
Elastic parts
389560
1010370
0, 66 0, 000 2
MT2-10.93
MT3 two,
1.41 0.000 9
45/114|85/MT42.180.0020
50127105
143125
60159|145
MT5= 3. 60
6. 070. 011 4
70181170
9. 090. 023 2
13.56|0.0468
80208200MT9 No.2
21.400.1041
90|230|230MT10 232.030.2105
GB/T 5272—2002
Nominal torque T,
Hardness of elastic parts
LM114500
Shaft hole diameter
70′, 71′, 75*
80~, 85°.90.95
100.110.120
8085:90*.95
LM126 30012 5002 500100,110,120,125130
90°,95
LM1311200
LM141250025 000
130.140.150
130*140°、150
Table 2 (continued)
Shaft hole length
Note 1: Mass and moment of inertia are approximate values calculated based on 1 push*minimum shaft hole. Note 2: The shaft hole diameter with * can be used for Type B shaft hole. Note 3; a and b are the hardness codes of the two materials. 212
Elastic parts
[100260105MT11
49.520.4338
115297/300|MT12-$
73.450.8205
125/323360MT13- 103. 861.671 8100|MT14_
135333
Table 3 Basic parameters and main dimensions of LMD type coupling Nominal torque T.
Hardness of elastic part
a/HA
80±560±5
Shaft hole diameter
12, 14
16, 18, 19
20, 22, 21
16, 18, 19
25, 28
Shaft hole length
Y type IJZ type
Elastic part
127.502.199 0
101.5]60100MT2二
kg·m?
1.21 10.0008
1.650. 0014
Nominal torque T
Hardness of elastic part
a/HAb/Hu/min
80±560=5
Shaft hole diameter
20, 22, 24
2006.90025, 28
30, 32
22, 24
3 0, 32, 35, 38
25, 28
100500030.32.35.38
40.42, 45
7104100
30, 32, 35, 38
40, 42, 45, 18
35\, 38*
1120/3 700
40, 42, 45, 48, 50,
112022403100
45, 48, 50, 55, 56
60, 63, 65
50*, 55*, 56
LMI9/180035502800
60,63.65.70.71.75
60*, 63*, 65\, 70,
71, 75
LMD10 / 2 800 5 600 2 500
80、85、90、95
70*.71'、75
LMD11450090002200
80、85\、90、95
100、110、120
80*,85°,90°,95*
LMD126 30012 500j1900100、110、120、125130
Table 3 (continued)
Shaft hole length
Y type JZ type
GB/T 5272~- 2002
Elastic parts
11070|110| MT3-|2.36[0.002 440
iMr-_3-56
1221 85 |125]
50 1138. 5/105/150l Mr5,
6-3610.013 5
125185MT6二10.770.0329
MT7*15.3010. 058 /
145203
70195170 240/ MT8
4 122. 7210. 117 5
80224 200 270Mr934. 44,0.233132
248230|305|MT10
51.360. 459 4
260350MT1181.300.9777
100284
115321
300400MT12115.531.7510
GB/T 5272—2002
Nominal torque T,
Hardness of elastic parts
a/HAb/Hi
80±560±5
Shaft hole diameter
did:d,
90°、95
L.MD1311200|200001600100.110, 120, 125130
100*, 110*, 120°,
LMD141250050
130*, 140”, 150
Table 3 (continued)
Shaft hole length
Y type JZ type
Note 1 Mass and moment of inertia are calculated according to the approximate value of the recommended minimum shaft hole of L Note 2: The shaft hole diameter with * can be used for Z type shaft hole. Note 3: a and b are the hardness codes of two materials. 132
Elastic parts
125348
|360|460MT13-
100500MT14
161. 79 3. 366 7
196.324.866 9
3.3.3 The structural type, basic parameters and main dimensions of LMS double flange coupling shall comply with the provisions of Figure 3 and Table 4. 3.3.4 The structural type, basic parameters and main dimensions of LMZ-1 split brake wheel coupling shall comply with the provisions of Figure 1 and Table 5. Y-type shaft hole
Half coupling;
Flange connection piece;
3 Elastic part
Bolts, nuts, washers;
7 Flange Half coupling.
(L recommended)
" type shaft hole
Art type shaft hole/
L(L recommended)
Figure 3LMS type coupling
Y type shaft hole
Mark/2
L(L recommended)
Half coupling:
2-elastic part;
Brake wheel;
4, 5--bolts, washers,
Half coupling.
/Z type shaft hole.
J-type shaft hole
Figure 4LMZ-type coupling
Table 4Basic parameters and main dimensions of LMS type couplingNominal torque T,
Hardness of elastic parts
a/HA|b/Hb
80±560±5
Shaft hole diameter
di,d2d,
12,14
16,18,19| |tt||20, 22.24
16, 18.19
20, 22, 24
25, 28
20, 22, 24
100200
Shaft hole length
Y type J, Z type
L recommended
mmmmmm
10860100
GB/T 5272--2002
Elastic parts
1.330.0013
MTI two B
MT2-B1. 740. 002 1
117170110
MT3_2.330.0034
GB/T 5272—2002
Nominal torque T
Hardness of elastic parts
a/HAb/,r/nin
350400
Shaft hole diameter
22, 24
25, 28
30, 32, 35, 38
25, 28
30, 32, 35, 38
40, 42, 45
30, 32, 35, 38
40, 42, 45, 48
35°, 38
6301120370040*, 42:45.48, 50.15*48*50.55.56
112022403100
50\55', 56*
180035502 80060.63, 65, 70, 71, 7580
Table 4 (continued)
Shaft hole length
8005 6002 500
80.85.90.95
70*、71*、75*
LMD114500|90002200|80*.85、90.95100、110、120
80*、85°90°95
1MD12!6 300|12 500i 1 900
100,110.120.125
LMD13 11 20020 000: 1 600/ 100,110,120,125130
Elastic parts
MI43.380.006 1
125185 MT6.
115/205 M17-
209170240
MT8二
6. 070. 017 3
10.470.044#
14. 220. 073 9
240200|270MT9
30. 700.276 7
268230|305|MT10二),[14.550.526290
100|308260 350MT11二1
300400|MT12-1
70. 721. 136 2
99. 5411. 999 8
360460MT131,137.533.6719
125!3730034
GB/T 5272—2002
Nominal torque T
Elastic component hardness
a/HAb/,r/nin
350400
Shaft hole diameter
22, 24
25, 28||tt| |30, 32, 35, 38
25, 28
30, 32, 35, 38
40, 42, 45
30, 32, 35, 38
40, 42, 45, 48
35°, 38
6301120370040*, 42:45.48, 50.15*48*50.55.56
112022403100
50\55', 56*
180035502 80060.63, 65, 70, 71, 7580
Table 4 (continued)
Shaft hole length
8005 6002 500
80.85.90.95
70*、71*、75*
LMD114500|90002200|80*.85、90.95100、110、120
80*、85°90°95
1MD12!6 300|12 500i 1 900
100,110.120.125
LMD13 11 20020 000: 1 600/ 100,110,120,125130
Elastic parts
MI43.380.006 1
125185 MT6.
115/205 M17-
209170240
MT8二
6. 070. 017 3
10.470.044#
14. 220. 073 9
240200|270MT9
30. 700.276 7
268230|305|MT10二),[14.550.526290
100|308260 350MT11二1
300400|MT12-1
70. 721. 136 2
99. 5411. 999 8
360460MT131,137.533.6719
125!3730034
GB/T 5272—2002
Nominal torque T
Elastic component hardness
a/HAb/,r/nin
350400
Shaft hole diameter
22, 24
25, 28||tt| |30, 32, 35, 38
25, 28
30, 32, 35, 38
40, 42, 45
30, 32, 35, 38
40, 42, 45, 48
35°, 38
6301120370040*, 42:45.48, 50.15*48*50.55.56
112022403100
50\55', 56*
180035502 80060.63, 65, 70, 71, 7580
Table 4 (continued)
Shaft hole length
8005 6002 500
80.85.90.95
70*、71*、75*
LMD114500|90002200|80*.85、90.95100、110、120
80*、85°90°95
1MD12!6 300|12 500i 1 900
100,110.120.125
LMD13 11 20020 000: 1 600/ 100,110,120,125130
Elastic parts
MI43.380.006 1
125185 MT6.
115/205 M17-
209170240
MT8二
6. 070. 017 3
10.470.044#
14. 220. 073 9
240200|270MT9
30. 700.276 7
268230|305|MT10二),[14.550.526290
100|308260 350MT11二1
300400|MT12-1
70. 721. 136 2
99. 5411. 999 8
360460MT131,137.533.6719
125!373
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