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JMI diaphragm coupling

JMI diaphragm coupling

DiaphragmCouplingThe elastic element is a thick metal reed, often made into a washer (diaphragm), with 4-8 bolt holes on its circumference, which are connected to the two halves of the coupling with bolts staggered, usually several diaphragms are stacked on Torque is transmitted together, and the relative displacement of the connected two shafts is compensated by the elastic deformation of the diaphragm.This kind of coupling has simple structure, convenient disassembly and assembly, reliable operation, no relative sliding, no lubrication and no noise.
JMI diaphragm couplingMLZ type single flange plum blossom elastic couplingFlexible elastic coupling

     DiaphragmCouplingThe elastic element is a thick metal reed, often made into a washer (diaphragm), with 4-8 bolt holes on its circumference, which are connected to the two halves of the coupling with bolts staggered, usually several diaphragms are stacked on Torque is transmitted together, and the relative displacement of the connected two shafts is compensated by the elastic deformation of the diaphragm.This kind of coupling has simple structure, convenient disassembly and assembly, reliable operation, no relative sliding, no lubrication and no noise.butDiaphragm couplingThe diaphragm has low elasticity and poor cushioning and vibration absorption capabilities, and can be used for high-speed transmission with relatively stable loads.
     The allowable angular displacement of the diaphragm coupling is 0.5"; the radial displacement is related to the intermediate length, the intermediate shaft length is 100mm, the angular displacement is 0.5", and the radial displacement is 1mm. Generally, the intermediate shaft length should not exceed the outer diameter of the coupling It is suitable, because the thickness of the diaphragm is very thin, generally 0.25-0.50mm, the elastic deformation of the diaphragm can allow a small amount of relative axial displacement of the two axes (<2.5mm).
     The structure of the diaphragm of the diaphragm coupling:
In order to improve the torsional elasticity of the diaphragm, the diaphragm coupling diaphragm can be made into a structure with two rings of evenly distributed bolt holes, and a shaped hole is made between the two rings of screw holes to increase the elasticity of the diaphragm.This kind of diaphragm has a larger outer diameter and higher rigidity. The web part between the two rings of screw holes also bears torsion, so the load-bearing capacity is higher. The evenly distributed bolt holes on the annular diaphragm are arranged staggered.When the torsion is transmitted, one side stretches and the other side compresses, and the load-bearing part is mainly the stretched side.In order to increase the tensile elasticity of the diaphragm, the outer edge is processed into an arc to become a polygon, but the line of force (the connection between the two bolt holes) should not exceed the range of the side width to prevent the diaphragm from being loaded. Bending reduces the strength. The structure with fewer sides under the same outer diameter will increase the side length due to the decrease in the number of sides, and the elasticity is better. The relative displacement of the two shafts connected to the compensation can be larger, but due to the number of sides participating in the load transfer Decrease, its carrying capacity is reduced, and the driven shaft speed fluctuates.

model
Nominal torque
Tn
N · m
moment
High torque
TMax
N · m
Permissible speed [n]
r·mi
Diameter of shaft hole
d, d1
Length of shaft hole
D
Torsional stiffness
C
N·m/rad
t
Turning
Inertia
 I
 kg·m 2
Mass m
kg
Y type
J, J1, Z, Z1
Lrecommend
L
L
L1
JMI1
25
80
6000
14
32
-
J1 type is 27 Z1 type is 20
35
90
1 × 10 4
8.8
0.0007
1
16, 18, 19
42
30
20, 22
52
38
JMI2
63
180
5000
18, 19
42
-
30
45
100
1.4 × 10 4
9.5
0.001
1.3
20, 22, 24
52
38
25
62
44
JMI3
100
315
5000
20, 22, 24
52
-
38
50
120
1.87 × 10 4
11
0.0024
2.3
25, 28
62
44
30
82
60
JMI4
160
500
4500
24
52
-
38
55
130
3.12 × 10 4
12.5
0.0037
3.3
25, 28
62
44
30, 32, 35
82
60
JMI5
250
710
4000
28
62
-
44
60
150
4.32 × 10 4
14
0.0083
5.3
30-32-35
82
60
40
112
84
JMI6
400
1120
3600
32, 35, 38
82
82
60
65
170
6.88 × 104
15.5
0.0159
8.7
40, 42, 45
, 48, 50
112
-
84
JMI7
630
1800
3000
40, 42
112
112
84
70
210
10.35 × 10 4
19
0.0432
14.3
45, 45, 50
, 55, 56
-
60
142
107
JMI8
1000
2500
2800
45, 48
112
112
84
80
240
16.11 × 10 4
22.5
0.0879
22
50, 55, 56
-
60-63-65
142
107
JMI9
1600
4000
2500
55, 56
112
112
84
85
260
26.17 × 10 4
24
0.1415
29
60, 63, 65
, 70, 71, 75
142
-
107
80
172
132
JMI10
2500
6300
2000
63, 65, 70
, 71, 75
142
142
107
90
280
7.88 × 10 4
17
0.2974
52
80-85-90
172
-
132
JMI11
4000
9000
1800
75
142
142
107
95
300
10.49 × 10 4
19.5
0.4782
69
80-85-90
172
-
132
100, 110
212
167
JMI12
6300
12500
1600
90, 95
172
-
132
120
340
14.07 × 10 4
23
0.8067
94
100, 110, 120, 125
212
167
JMI13
10000
18000
1400
100-110-120
212
-
167
135
380
19.23 × 10 4
28
1.7053
128
130, 140
252
202
JMI14
16000
28000
1200
120, 125
212
-
167
150
420
30.01 × 10 4
31
2.6832
184
130, 140, 150
252
202
160
302
242
JMI15
25000
40000
1120
140, 150
252
-
202
180
480
47.46 × 10 4
37.5
4.8015
263
160, 170, 180
302
242
JMI16
40000
56000
1000
160, 170, 180
302
-
242
200
560
68.09 × 10 4
41
9.4118
384
190, 200
352
282
JMI17
63000
80000
900
190, 200, 220
352
-
282
220
630
101.3 × 10 4
47
18.3753
561
240
410
330
JMI18
100000
125000
800
220
352
-
282
250
710
161.4 × 10 4
54.5
28.2033
723
240, 250, 260
410
330
JMI19
160000
200000
700
250, 260
410
-
330
280
800
79.3 × 104
48
66.5813
1267

Note: Mass and moment of inertia are approximate values.