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JMI diaphragm coupling

JMI diaphragm coupling

The elastic element of diaphragm coupling is thick metal spring, which is often made into washer-like (diaphragm). There are 4-8 bolt holes in its circumference. The bolts are interlaced with the two-half coupling. Usually several diaphragms are stacked together to transmit torque, and the relative displacement of the two axes is compensated by the elastic deformation of the diaphragm.
JMI diaphragm couplingMLZ Single Flange Plum Blossom Elastic CouplingFlexible elastic coupling

  The elastic element of diaphragm coupling is thick metal spring, which is often made into washer-like (diaphragm). There are 4-8 bolt holes in its circumference. The bolts are interlaced with the two-half coupling. Usually several diaphragms are stacked together to transmit torque, and the relative displacement of the two axes is compensated by the elastic deformation of the diaphragm. The coupling has the advantages of simple structure, convenient disassembly and assembly, reliable operation, no relative sliding, no lubrication and no noise. However, the diaphragm of diaphragm coupling has small elasticity, poor cushioning and vibration absorption ability, and can be used for high-speed transmission with relatively stable load.

  The allowable angular displacement of the diaphragm coupling is 0.5 and the radial displacement is related to the middle length. The angular displacement of the middle axis is 0.5 and the radial displacement is 1 mm. Usually the length of the middle axis should not exceed the outer diameter of the coupling. Because the thickness of the diaphragm is very thin, it is generally 0.25-0.50 mm, and the relative axial displacement of the two axes can be allowed by the elastic deformation of the diaphragm (< 2.5 mm).

  Diaphragm structure of diaphragm coupling:

  In order to improve the torsional elasticity of the diaphragm, the diaphragm of the diaphragm coupling can be made into a structure with two uniformly distributed bolt holes. Forming holes are made between the two holes to increase the elasticity of the diaphragm. The diaphragm has larger outer diameter, higher rigidity, and the spoke part between the two rings of screw holes also bears torsion. Therefore, the bearing capacity of the diaphragm is higher, and the bolt holes distributed uniformly on the annular diaphragm are staggered. When transferring the torsion data, one side is stretched and the other side is compressed, and the load-bearing part is mainly on the stretched side. In order to increase the tensile elasticity of diaphragm, the outer edge of diaphragm is processed into a polygon, but the action line of force (the middle connection between two bolt holes) should not exceed the range of edge width, so as to prevent the bending of diaphragm and reduce its strength under loading. In the structure with fewer edges under the same outer diameter, the length of diaphragm increases with the decrease of edge number, and the elasticity is better, and the relative displacement of the two axes can be compensated comparatively. However, due to the reduction of the number of edges participating in the load transfer, the load-carrying capacity is reduced, and the speed of the driven shaft fluctuates.

Model
Nominal Torque
Tn
N·m
Instantaneous maximum torque
Tmax
N·m
Permissible Speed[n]
r·mi
Axle hole diameter
d、d1
Axle hole length DTorsional stiffness

C
N·m/rad
t
Moment of inertia
 I
 kg·m 2
quality m
kg
Y
Model  
J、J1、 Z、Z
Model  
LRecommend
L L L1
JMI1 25 80 6000 14 32 - J1型为27 Z1型为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、38 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、70 142 107
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、95 172 - 132
JMI11 4000 9000 1800 75 142 142 107 95 300 10.49×10 4 19.5 0.4782 69
80、85、90、95 172 - 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、125 212 - 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.