The JM type diaphragm coupling is a high-performance metal elastic element flexible coupling, consisting of several sets of stainless steel thin plates (diaphragms) precisely stamped and alternately connected between two half couplings by high-strength bolts. It compensates for relative displacement between two shafts (axial, radial, angular) through the elastic deformation of the diaphragms and transmits torque. This coupling features lubrication-free, maintenance-free, compact structure, high transmission efficiency, high compensation accuracy, high temperature resistance, corrosion resistance, and electromagnetic interference resistance, widely used in high-precision, high-speed, and harsh environment mechanical transmission systems.
Classification
1. By diaphragm structure:
- Single disc structure (JM-I type): suitable for occasions with small angular displacement.
- Double disc structure (JM-II type): with an intermediate shaft (such as the double-joint structure in the user's picture), stronger compensation capability, suitable for large angle and complex displacement occasions (the picture shows the double-joint coupling connected by an intermediate shaft).
2. By application:
- General type: suitable for ordinary mechanical transmission.
- High precision type: used for CNC machine tools, robots, and other precision equipment. - Heavy-duty type: used for heavy machinery in metallurgy, mining, etc.
3. By diaphragm material:
- Stainless steel 304: economical type, good corrosion resistance.
- Stainless steel 316L: high strength, high corrosion resistance, suitable for harsh environments.
Product Advantages
The JM type diaphragm coupling mainly consists of two half flanges (or hubs), diaphragm sets, and high-strength fasteners (the black coupling in the picture is a typical structure):
- Diaphragm set: the core component, made of multiple layers of stainless steel thin plates laminated together, treated with special processes, featuring high elastic modulus, low hysteresis loss, and fatigue resistance. The diaphragm shape (such as arc-shaped, conical) determines the compensation performance.
- Half coupling: usually made of high-quality forged steel (such as 45 steel, 40Cr), precisely machined and heat-treated to ensure strength and concentricity. Connected to the shaft by key or shrink fit.
- Fasteners: high-strength bolts (such as grade 12.9) and nuts ensure the reliability of torque transmission by the coupling.
Maintenance-free: no vulnerable parts, no lubrication required, reducing downtime for maintenance.
High precision transmission: high angular compensation accuracy (usually ≤ ±1.5°~±3°), transmission efficiency > 99%.
Excellent environmental adaptability: temperature resistance (-60℃~+350℃), corrosion resistance, electromagnetic interference resistance, suitable for harsh working conditions.
Vibration damping and noise reduction: the elasticity of the diaphragm effectively attenuates system vibration and impact.
Compact structure: small radial size, light weight, high dynamic balance accuracy (G2.5 or higher).
Scope of Application
High precision equipment: CNC machine tools (spindle, feed shaft), robots (joint transmission), automated production lines.
High-speed equipment: centrifuges, compressors, fans, pumps.
Harsh condition equipment: metallurgy industry (continuous casting machines, rolling mills), mining machinery (crushers), chemical equipment (high corrosion resistance requirements).
Precision measurement and control systems: encoder, servo motor connections.
Others: automotive manufacturing, textile machinery, printing machinery, and other occasions requiring stable transmission and high precision.
Working Principle
1. Torque transmission: the driving shaft drives the diaphragm set deformation through the half coupling; the elastic deformation of the diaphragm set transmits torque to the driven half coupling, driving the driven shaft.
2. Displacement compensation: - Angular displacement: the diaphragm bends and deforms in the thickness direction (such as arc-shaped diaphragms), allowing angular deviation between two shafts (the intermediate shaft of the double-joint coupling in the picture can compensate for large angles).
- Axial displacement: the diaphragm stretches and contracts axially (the intermediate shaft in the double disc structure can significantly increase compensation capacity).
- Radial displacement: the diaphragm bends radially, absorbing radial deviation.
3. Vibration damping and buffering: the elastic characteristics of the diaphragm absorb part of the vibration energy, reducing impact on the transmission system.
JM Type Diaphragm Coupling Model Parameter Table
Model |
Maximum Torque (kN·m) |
Maximum Speed (r/min) |
Angular Compensation (°) |
Shaft Hole Diameter Range (mm) |
Diaphragm Material |
Weight (kg) |
JM-I-6 |
0.5 |
5000 |
±1.5 |
10~30 |
304 |
1.2 |
JM-I-8 |
1.2 |
4000 |
±2.0 |
20~50 |
316L |
2.5 |
JM-II-10 |
3.0 |
3000 |
±2.5 |
40~80 |
316L |
5.0 |
JM-II-12 |
6.0 |
2500 |
±3.0 |
60~120 |
316L |
9.0 |
JM-II-14 |
12.0 |
2000 |
±3.5 |
100~180 |
316L |
16.0 |
Keywords
Previous: WGT Type Intermediate Sleeve
JM Type Diaphragm Coupling
Contact Information
Product Categories
Related Products
Related Products
Ball mill
Ball mill
Rod Mill
(Semi) Autogenous Mill
Mining Hoisting
Single-rope Winding Mine Hoist
Multi-rope friction mine hoist
Well Drilling Hoist
Supporting Equipment
Mining Washing and Selection
Selective Crusher
Centrifuge
-
WLL Series Coal Slime Scraper Discharge Centrifugal Dehydrator
-
WZY Series Dual-Mass Horizontal Vibrating Centrifugal Dehydrator
-
WZL Series Horizontal Vibrating Centrifugal Dehydrator
-
TWZ Series Horizontal Vibrating Centrifugal Dehydrator
-
LLS-900 Sludge Centrifugal Dehydrator
-
ML Series Coal Slurry Centrifugal Dewatering Machine
-
LL Series Vertical Centrifugal Dehydrator
Flotation machine
Filter machine
Grading Machine
Mining Auxiliary Equipment
Gear Reducer Series
-
Vertical mill gearbox
-
Special reducer for scraper machine
-
Industry-specific gear reducer
-
Bevel Gear Reducer
-
Cylindrical Gear Reducer
-
Planetary Gear Reducer
-
Parallel shaft reducer
-
Industrial General Gearbox Series
-
Helical Gear - Bevel Gear Reduction Motor
-
Helical Gear Reduction Motor
-
Planetary Gear Reducer
-
Cylindrical Gear Reducer
Category One
Category Two
Crusher Series
Rotary Crusher
Jaw Crusher
Impact Crusher
Cone Crusher
Ball Press Machine
High-pressure briquetting machine
Medium and High Pressure Briquetting Machine
Roller Press
Rotary kiln
-
Cement kiln (rotary kiln)
-
Light gray kiln (self-alkali steam calcination kiln)
-
Chemical kiln
-
Oxidation Cooling Kiln
-
Oxidative roasting rotary kiln (oxidation kiln)
-
Lithium Carbonate Rotary Kiln
-
Lime Rotary Kiln
-
Metal Magnesium Rotary Kiln
-
Architectural Lightweight Aggregate Rotary Kiln
-
Cement Rotary Kiln
Cast and forged parts
Large castings
Large Forgings
Transmission Accessories
Gear Coupling
Electro-hydraulic control system
Automation Control
-
GPRS Remote Expert Diagnosis System
-
Metallurgical Electrical Control Equipment
-
Ore Dressing and Coal Washing Automation Control System
-
System Local Modification
-
Doubly-fed variable frequency electric control system
-
All-digital DC electric control system
-
Full digital low-voltage variable frequency feedback
-
Disc Brake Online Detection System
-
Rotary Kiln Control System
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic Station
-
Variable Frequency Servo Hydraulic System
-
E119A/E119S E118A/E118S Explosion-proof Secondary Brake Hydraulic Station
-
Constant Deceleration Electro-Hydraulic Brake Control Device
-
TE160/TE161/TE162/TE163 Cartridge Control Two-Stage Brake Hydraulic Station
Hydraulic cylinder
Other accessories
Large welded components
Wear-resistant products
-
Jaw crusher jaw plate
-
New High-Pressure Roller Wear-Resistant Overlay Welding Technology
-
Bus Alloy Bearing Shell
-
Large ball mill ZGMN13CR2 liner
-
Medium chrome alloy liner
-
Manganese Steel Series Products
-
High carbon cast iron parts
-
Low-carbon martensitic steel jaw plate
-
Large self-grinding mill shell liner
Engineering Plastics
-
Elevator modified PP head wheel and guide wheel liners
-
Nylon products
-
Polyurethane products
-
Multi-rope hoist phenolic resin blocks and fixed blocks
-
Imported from Germany—LUWIPLAST GELB848 friction lining
-
Single-rope mine hoist plastic liner
-
WSM-3 New Environmentally Friendly Asbestos-Free Gate Valve (Hoisting Mechanism Brake)
-
KP-09 Ultra-high Molecular Weight Sprocket Liner
-
GDM326 Imported Material High-Performance Friction Lining
Contact Us
No.99 Hengshan Road, Jianxi District, Luoyang City, Henan Province
sweep
CITICTLC
Learn more about dynamic information