Product Description
JMI Type Diaphragm Coupling(JB/T9147-1999)
JM Series Diaphragm Coupling of flexible metal flexible coupling, which relies on the metal diaphragm to transmit torque from the main connection, motivation, has the advantages of elastic damping and no lubrication, no noise, is an ideal product for replacing the gear coupling and coupling current. It can compensate for the axial, radial, and angular deviation caused by the manufacturing error, installation error, bearing deformation, and the change in temperature rise.
Features
1. Compensation two-axis misalignment of the ability, and tooth type coupling can be much more than a double angle displacement, radial displacement of the small, flexible, allowing a certain axial, radial, and angular displacement.
2. Obvious damping effect, no noise, no wear, and tear.
3. High transmission efficiency, up to 99.86%. Especially suitable for medium and high-speed high-power transmission.
4. Adapt to high temperature (-80+300) and harsh environments, and can be in shock, vibration, safety, and dynamic conditions.
5. Simple structure, lightweight, small size, convenient assembly, and disassembly. Without moving the machine can be disassembled (with intermediate type), with no need for lubrication.
6. Accurately convey the rotational speed, the operation has not turned bad, can be used for the transmission of precision machinery.
JM series diaphragm flexible coupling is widely used in the machinery and equipment industry, metallurgy, mines, petroleum, chemical, electric power, shipbuilding, lifting transport, textile, light industry, agricultural machinery, printing machinery and water pump, fan, etc. in the transmission of power machine.
JMI Type Coupling Main Dimension(JB/T9147-1999)
| Type | Nominal torque Tn |
Peak torque Tmax |
Max Speed np |
Bore diameter d |
Bore Length | D | t | Torsional stiffness C |
Mass | Rotary inertia | |||
| Y type | J,J1,Z,Z1 type | L(recommend) | |||||||||||
| L | L | L1 | |||||||||||
| N·m | N·m | r·min-1 | mm | N·m/rad | kg | kg·m2 | |||||||
| JMI1 | 25 | 80 | 6000 | 14 | 32 | – | J127 Z120 |
35 | 90 | 8.8 | 1×104 | 1 | 0.0007 |
| 16,18,19 | 42 | 30 | |||||||||||
| 20,22 | 52 | 38 | |||||||||||
| JMI2 | 63 | 180 | 5000 | 18,19 | 42 | 30 | 45 | 100 | 9.5 | 1.4×104 | 2.3 | 0.001 | |
| 20,22,24 | 52 | 38 | |||||||||||
| 25 | 62 | 44 | |||||||||||
| JMI3 | 100 | 315 | 5000 | 20,22,24 | 52 | – | 38 | 50 | 120 | 11 | 1.87×104 | 2.3 | 0.0571 |
| 25,28 | 62 | 44 | |||||||||||
| 30 | 82 | 60 | |||||||||||
| JMI4 | 160 | 500 | 4500 | 24 | 52 | 38 | 55 | 130 | 12.5 | 3.12×104 | 3.3 | 0.0571 | |
| 25,28 | 62 | 44 | |||||||||||
| 30,32,35 | 82 | 60 | |||||||||||
| JMI5 | 250 | 710 | 4000 | 28 | 62 | 44 | 60 | 150 | 14 | 4.32×104 | 5.3 | 0.0083 | |
| 30,32,35,38 | 82 | 60 | |||||||||||
| 40 | 112 | 84 | |||||||||||
| JMI6 | 400 | 1120 | 3600 | 32,35,38 | 82 | 82 | 60 | 65 | 170 | 15.5 | 6.88×104 | 8.7 | 0.0159 |
| 40,42,45,48, 50 |
112 | 112 | 84 | ||||||||||
| JMI7 | 630 | 1800 | 3000 | 40,42,45,48, 50,55,56 |
112 | 112 | 84 | 70 | 210 | 19 | 10.35×104 | 14.3 | 0.571 |
| 60 | 142 | – | 107 | ||||||||||
| JMI8 | 1000 | 2500 | 2800 | 45,48,50,55, 56 |
112 | 112 | 84 | 80 | 240 | 22.5 | 16.11×104 | 22 | 0. 0571 |
| 60,63,65,70 | 142 | 107 | |||||||||||
| JMI9 | 1600 | 4000 | 2500 | 55,56 | 112 | 84 | 85 | 260 | 24 | 26.17×104 | 29 | 0.1415 | |
| 60,63,70,71, 75 |
142 | 107 | |||||||||||
| 80 | 172 | 132 | |||||||||||
| JMI10 | 2500 | 6300 | 2000 | 63,65,70,71,75 | 142 | 142 | 107 | 90 | 280 | 17 | 7.88×104 | 52 | 0.2974 |
| 80,85,90,95 | 172 | – | 132 | ||||||||||
| JMI11 | 4000 | 9000 | 1800 | 75 | 142 | 142 | 107 | 95 | 300 | 19.5 | 10.49×104 | 69 | 0.4782 |
| 80,85,90,95 | 172 | 172 | 132 | ||||||||||
| 100,110 | 212 | – | 167 | ||||||||||
| JMI12 | 6300 | 12500 | 1600 | 90,95 | 172 | 132 | 120 | 340 | 23 | 14.07×104 | 94 | 0.8067 | |
| 100,110,120,125 | 212 | 167 | |||||||||||
| JMI13 | 10000 | 18000 | 1400 | 100,110,120,125 | 212 | 167 | 135 | 380 | 28 | 19.2×104 | 128 | 1.7053 | |
| 130,140 | 252 | 202 | |||||||||||
| JMI14 | 16000 | 28000 | 1200 | 120,125 | 212 | – | 167 | 150 | 420 | 31 | 30.0×104 | 184 | 2.6832 |
| 130,140,150 | 252 | 202 | |||||||||||
| 160 | 302 | 242 | |||||||||||
| JMI15 | 25000 | 40000 | 1120 | 140,150 | 252 | 202 | 180 | 480 | 37.5 | 47.46×104 | 262 | 4.8015 | |
| 160,170,180 | 302 | 242 | |||||||||||
| JMI16 | 40000 | 56000 | 1000 | 160,170,180 | 302 | 242 | 200 | 560 | 41 | 48.09×104 | 384 | 9.4118 | |
| 190,200 | 352 | 282 | |||||||||||
| JMI17 | 63000 | 80000 | 900 | 190,200,220 | 352 | 282 | 220 | 630 | 47 | 10.13×104 | 561 | 18.3753 | |
| 240 | 410 | 330 | |||||||||||
| JMI18 | 100000 | 125000 | 800 | 220 | 352 | 282 | 250 | 710 | 54.5 | 16.14×104 | 723 | 28.2033 | |
| 240,250,260 | 410 | 330 | |||||||||||
| JMI19 | 160000 | 200000 | 710 | 250,260 | 410 | 330 | 280 | 800 | 48 | 79.8×104 | 1267 | 66.5813 | |
| 280,300,320 | 470 | 380 | |||||||||||
♦Product Show
♦Other Products List
| Transmission Machinery Parts Name |
Model |
| Universal Coupling | WS,WSD,WSP |
| Cardan Shaft | SWC,SWP,SWZ |
| Tooth Coupling | CL,CLZ,GCLD,GIICL, GICL,NGCL,GGCL,GCLK |
| Disc Coupling | JMI,JMIJ,JMII,JMIIJ |
| High Flexible Coupling | LM |
| Chain Coupling | GL |
| Jaw Coupling | LT |
| Grid Coupling | JS |
♦Our Company
HangZhou CHINAMFG Machinery Manufacturing Co., Ltd. is a high-tech enterprise specializing in the design and manufacture of various types of coupling. There are 86 employees in our company, including 2 senior engineers and no fewer than 20 mechanical design and manufacture, heat treatment, welding, and other professionals.
Advanced and reasonable process, complete detection means. Our company actively introduces foreign advanced technology and equipment, on the basis of the condition, we make full use of the advantage and do more research and innovation. Strict to high quality and operate strictly in accordance with the ISO9000 quality certification system standard mode.
Our company supplies different kinds of products. High quality and reasonable price. We stick to the principle of “quality first, service first, continuous improvement and innovation to meet the customers” for the management and “zero defect, zero complaints” as the quality objective.
♦Our Services
1. Design Services
Our design team has experience in Cardan shafts relating to product design and development. If you have any needs for your new product or wish to make further improvements, we are here to offer our support.
2. Product Services
raw materials → Cutting → Forging →Rough machining →Shot blasting →Heat treatment →Testing →Fashioning →Cleaning→ Assembly→Packing→Shipping
3. Samples Procedure
We could develop the sample according to your requirement and amend the sample constantly to meet your need.
4. Research & Development
We usually research the new needs of the market and develop new models when there are new cars in the market.
5. Quality Control
Every step should be a particular test by Professional Staff according to the standard of ISO9001 and TS16949.
♦FAQ
Q 1: Are you a trading company or a manufacturer?
A: We are a professional manufacturer specializing in manufacturing
various series of couplings.
Q 2:Can you do OEM?
Yes, we can. We can do OEM & ODM for all customers with customized PDF or AI format artworks.
Q 3:How long is your delivery time?
Generally, it is 20-30 days if the goods are not in stock. It is according to quantity.
Q 4: Do you provide samples? Is it free or extra?
Yes, we could offer the sample but not for free. Actually, we have an excellent price principle, when you make the bulk order the cost of the sample will be deducted.
Q 5: How long is your warranty?
A: Our Warranty is 12 months under normal circumstances.
Q 6: What is the MOQ?
A: Usually our MOQ is 1pcs.
Q 7: Do you have inspection procedures for coupling?
A:100% self-inspection before packing.
Q 8: Can I have a visit to your factory before the order?
A: Sure, welcome to visit our factory.
Q 9: What’s your payment?
A:1) T/T.
♦Contact Us
Web: huadingcoupling
Add: No.11 HangZhou Road,Chengnan park,HangZhou City,ZheJiang Province,China
Materials Used to Manufacture Diaphragm Couplings and Their Impact on Performance
Diaphragm couplings are manufactured using various materials, and the choice of material significantly impacts their performance in different applications. Here are some common materials used in diaphragm couplings and their impact on performance:
- Metallic Alloys:
- High-Temperature Alloys:
- Titanium:
- Elastomers:
- Non-Metallic Materials:
Stainless steel and other high-strength metallic alloys are widely used in diaphragm couplings. These materials offer excellent durability, high torsional stiffness, and resistance to wear and fatigue. They are well-suited for high-torque applications and environments with demanding operating conditions.
In applications where diaphragm couplings are exposed to elevated temperatures, specialized high-temperature alloys like Inconel and Hastelloy are used. These alloys can withstand extreme heat without losing their mechanical properties, making them ideal for use in industries such as steel processing and power generation.
Titanium is favored for its lightweight and excellent corrosion resistance. Diaphragm couplings made from titanium are commonly used in aerospace and marine applications where weight reduction and resistance to corrosive environments are critical.
For certain applications that require vibration dampening and shock absorption, diaphragm couplings can be manufactured with elastomeric materials like rubber or urethane. These materials help reduce transmitted vibrations and can be found in pumps, compressors, and automotive drivetrain systems.
In situations where electrical isolation or non-magnetic properties are necessary, non-metallic materials like PTFE (Teflon) or polypropylene may be used. These materials are also highly resistant to chemical corrosion, making them suitable for certain chemical processing and semiconductor applications.
The choice of material impacts several aspects of diaphragm coupling performance, including:
- Torsional Stiffness: Metallic alloys and high-temperature materials provide high torsional stiffness, ensuring efficient torque transmission and accuracy in motion control applications.
- Corrosion Resistance: The selection of corrosion-resistant materials is crucial in applications where diaphragm couplings are exposed to corrosive environments, such as in marine or chemical industries.
- Temperature Resistance: High-temperature alloys enable diaphragm couplings to operate effectively in environments with elevated temperatures, such as steel processing or power generation plants.
- Weight: Materials like titanium offer lightweight advantages, making diaphragm couplings suitable for aerospace and other weight-sensitive applications.
- Vibration Damping: Elastomeric materials provide excellent vibration dampening properties, reducing vibrations and noise in certain applications.
Manufacturers carefully select the appropriate material based on the specific requirements of the application to ensure optimal performance and reliability of the diaphragm coupling in a wide range of industries.
How Does the Flexibility of Diaphragm Couplings Enhance Their Performance in Challenging Environments?
Diaphragm couplings’ flexibility is a key feature that enhances their performance in challenging environments. The ability to flex and compensate for misalignments provides several advantages, making them well-suited for various industrial applications. Here’s how the flexibility of diaphragm couplings contributes to their enhanced performance:
- Misalignment Compensation:
- Vibration Dampening:
- Shock Absorption:
- Temperature Variations:
One of the primary benefits of diaphragm couplings’ flexibility is their ability to accommodate misalignments between the connected shafts. In real-world applications, it is challenging to achieve perfect alignment between shafts due to factors like thermal expansion, shaft deflection, and machine assembly tolerances. Diaphragm couplings can handle axial, angular, and parallel misalignments, ensuring smooth operation even in situations where misalignments may occur during machine operation. By compensating for misalignment, diaphragm couplings reduce stress on the shafts and connected machinery, minimizing the risk of premature wear and failure.
The flexibility of diaphragm couplings allows them to absorb and dampen vibrations that can arise during machine operation. Vibrations can be caused by factors like imbalances, load fluctuations, and mechanical resonances. Diaphragm couplings act as a vibration buffer, attenuating vibration transmission from one shaft to another. This dampening effect helps reduce the risk of mechanical resonance, which can lead to increased stresses and premature failure of components. By dampening vibrations, diaphragm couplings contribute to smoother and quieter operation, promoting overall system reliability and longevity.
In some industrial applications, sudden shocks and impacts can occur due to machine start-ups, load changes, or external forces. The flexibility of diaphragm couplings allows them to absorb and distribute the energy generated by these shocks. By absorbing shock loads, diaphragm couplings protect the connected machinery from damage and prevent potential disruptions in the production process. This shock absorption capability is particularly valuable in applications where equipment encounters frequent and varying shock loads.
Diaphragm couplings can operate effectively across a wide range of temperatures. The flexibility of the diaphragm allows it to maintain its performance even in high-temperature environments. This versatility makes diaphragm couplings suitable for applications in industries like steel manufacturing, glass production, and petrochemical processing, where high temperatures are common.
Overall, the flexibility of diaphragm couplings is a significant advantage in challenging environments. By compensating for misalignments, dampening vibrations, absorbing shocks, and withstanding temperature variations, diaphragm couplings ensure reliable and efficient power transmission in various industrial settings. Their ability to enhance system performance and protect machinery from adverse conditions makes them a preferred choice in critical applications that demand durability, precision, and resilience.
Types of Diaphragm Couplings and Their Specific Applications
Diaphragm couplings come in various designs and materials, each suited for specific applications. Here are some of the different types of diaphragm couplings and their specific applications:
- Metal Diaphragm Couplings:
- Industrial machinery such as pumps, compressors, and generators
- Motion control systems in robotics and automation
- Paper and printing machinery
- Machine tools and CNC equipment
- Marine and offshore equipment
- Aerospace systems
- Elastomeric Diaphragm Couplings:
- Pumps and compressors in HVAC systems
- Power transmission in agricultural machinery
- Automotive drivetrain components
- Small engine applications
- Medical equipment
- High-Temperature Diaphragm Couplings:
- Steel and metal processing industries
- Heat treatment furnaces
- Power generation plants
- Chemical processing equipment
- Glass and ceramic manufacturing
- Non-Metallic Diaphragm Couplings:
- Electrical machinery and equipment
- Semiconductor manufacturing
- Food and beverage processing
- Pharmaceutical and biotechnology applications
Metal diaphragm couplings are the most common type and are often made of stainless steel or other high-strength alloys. They are used in a wide range of applications that require high torque transmission, precision, and reliability. Some common applications include:
Elastomeric diaphragm couplings have a flexible diaphragm made of elastomeric materials like rubber or urethane. They offer vibration dampening properties and are suitable for applications that require shock absorption and noise reduction. Specific applications include:
These couplings are designed to withstand high temperatures, making them suitable for applications in extreme heat environments. They are commonly used in:
Non-metallic diaphragm couplings are made from materials like polyurethane or other composites. They are often used in applications where electrical isolation or non-magnetic properties are required. Specific applications include:
Each type of diaphragm coupling offers unique features and advantages, making them suitable for various industries and applications. When selecting a diaphragm coupling, it’s essential to consider factors like torque requirements, misalignment tolerance, environmental conditions, and specific performance characteristics to ensure the coupling’s optimal performance in the intended application.
editor by CX 2023-10-19