Product Description

JMI Type Disc Diaphragm Coupling(JB/T9147-1999)

Product Description

 

♦Description
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.

The main characteristics of JM Series Diaphragm Coupling:
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.

♦Detailed Pictures

♦Basic Parameter and Main Dimension

NO  Tn    /N·m Tmax  /N·m    [n]  /r·mi -1     d  (H7)   D   C  N·m/rad t     I  kg·m 2  ≈   m  /kg  ≈ Y J,J1,  Z L L L L1 JMI1 25 80 6000 14 32 – J1  27 Z1 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 0.0571 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 6.88×10 4 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 0.571 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. 0571 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 79.3×10 4 48 66.5813 1267 280,300,320 470 380

 

Other products

 

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

 

 

Company Profile

 

 

HangZhou CHINAMFG Machinery Manufacturing Co., Ltd. is a high-tech enterprise specializing in the design and manufacture of various types of coupling. There are 26 employees in our company, including 2 senior engineers and no fewer than 10 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 service

 

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 the new model when there is new cars in the market.

5. Quality Control
Every step should be a special 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 the customers with customized artworks in PDF or AI format.

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 a very good 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 1 pcs.

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: T/T.  

♦Contact Us

Web: huadingcoupling
Add: No.11 HangZhou Road,Chengnan park,HangZhou City,ZheJiang Province,China

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Industries and Use Cases for Diaphragm Couplings

Diaphragm couplings find applications in various industries due to their flexibility, precision, and ability to handle misalignment. Here are some common industries that commonly use diaphragm couplings and their specific use cases:

1. Industrial Machinery:

In the industrial machinery sector, diaphragm couplings are utilized for:

• Power transmission in pumps and compressors
• Motion control systems in robotics and automation
• Drive systems for conveyors and material handling equipment
• Motion control applications in packaging and printing machinery
2. Oil and Gas:

In the oil and gas industry, diaphragm couplings are commonly used in:

• Gas compressors and turbine drives
• Extraction pumps and mud pumps
• Rotating equipment on offshore platforms
• Power transmission in drilling rigs
3. Steel and Metal Processing:

Diaphragm couplings play a vital role in the steel and metal processing industry, where they are used in:

• Rolling mills and metal forming equipment
• Continuous casting machines
• High-temperature furnace drives
• Steel shears and cutters
4. Aerospace and Defense:

In the aerospace and defense sector, diaphragm couplings are utilized in:

• Aircraft engine power transmission
• Missile and satellite systems
• Airborne radar and avionics equipment
• Military vehicle drivetrains
5. Marine:

In the marine industry, diaphragm couplings are commonly found in:

• Marine propulsion systems
• Shipboard pumps and compressors
• Power transmission in marine generators
• Steering systems for marine vessels
6. Chemical and Process Industries:

In the chemical and process industries, diaphragm couplings are used in:

• Chemical processing pumps and compressors
• Agitators and mixers
• Reaction vessels and reactors
• Chemical plant material handling systems

These examples represent just a few of the many industries where diaphragm couplings are utilized. Their ability to handle misalignment, dampen vibrations, and transmit torque reliably makes them an integral part of various mechanical systems in different sectors.

Real-World Case Studies of Diaphragm Couplings in Engineering Projects

Diaphragm couplings have been successfully utilized in various engineering projects, providing reliable power transmission and addressing specific challenges faced by different industries. Here are some real-world case studies and success stories showcasing the effectiveness of diaphragm couplings:

1. Case Study 1: Pumping System in Wastewater Treatment Plant

In a wastewater treatment plant, a critical pumping system was experiencing frequent breakdowns due to misalignment issues and vibration-related failures. The plant engineers decided to replace the existing gear couplings with diaphragm couplings to address these problems. The diaphragm couplings’ flexibility allowed them to compensate for the misalignment caused by thermal expansion and pump impeller wear. Additionally, the couplings’ ability to dampen vibrations reduced stress on the pump bearings, resulting in extended maintenance intervals and increased overall system reliability. The successful implementation of diaphragm couplings in this project led to significant cost savings by minimizing downtime and reducing the need for frequent maintenance.

2. Case Study 2: Turbine-Generator Coupling in Power Plant

In a power generation plant, a large gas turbine-generator coupling required replacement due to excessive wear and fatigue-related failures in the previous coupling. The plant engineers opted for a high-performance diaphragm coupling with improved fatigue resistance and higher torque capacity. The flexibility of the diaphragm coupling allowed it to accommodate slight misalignments between the turbine and the generator during operation. This capability reduced the stress on the coupling and mitigated the risk of premature failure. The diaphragm coupling’s ability to handle torsional vibrations and dampen mechanical resonance further improved the overall reliability and performance of the turbine-generator system, resulting in increased power generation efficiency and reduced maintenance costs.

3. Case Study 3: Industrial Compressor System

In an industrial compressor application, the existing coupling experienced frequent failures due to misalignment and shock loads from varying compression demands. The plant engineers replaced the old coupling with a diaphragm coupling featuring high misalignment tolerance and excellent shock absorption properties. The diaphragm coupling’s flexibility effectively compensated for the misalignment between the compressor and the motor, resulting in smoother operation and reduced stress on the drive components. Additionally, the coupling’s ability to absorb sudden shock loads reduced the risk of equipment damage and minimized unplanned downtime. The successful implementation of the diaphragm coupling significantly improved the compressor system’s reliability and contributed to increased productivity in the industrial facility.

These case studies demonstrate the successful application of diaphragm couplings in diverse engineering projects, including wastewater treatment plants, power generation facilities, and industrial compressors. The flexibility, misalignment compensation, and vibration dampening properties of diaphragm couplings have proven to be valuable in addressing specific challenges and enhancing the performance and reliability of critical machinery in various industries.

What is a Diaphragm Coupling and How Does it Function in Mechanical Systems?

A diaphragm coupling is a type of flexible coupling used in mechanical systems to transmit torque between two shafts that are slightly misaligned. It consists of two hubs, each attached to a shaft, and a flexible diaphragm in between.

The function of a diaphragm coupling is to accommodate misalignment while transmitting torque smoothly and efficiently. Here’s how it works:

1. Torsional Flexibility: The diaphragm, typically made of metal, is designed with a series of corrugations or convolutions. These corrugations allow the diaphragm to flex and bend in response to shaft misalignment.
2. Transmitting Torque: When torque is applied to one shaft, it gets transferred to the diaphragm, which then flexes to accommodate any angular, parallel, or axial misalignment between the shafts.
3. Maintaining Alignment: As the diaphragm flexes, it maintains a constant connection between the two hubs and ensures that the rotational motion is smoothly transferred from one shaft to the other.
4. No Lubrication: Diaphragm couplings do not require any lubrication, making them low-maintenance and suitable for various applications.
5. High Torque Capacity: Despite their flexibility, diaphragm couplings can handle high torque loads, making them ideal for demanding mechanical systems.
6. Vibration Damping: The flexibility of the diaphragm also helps in dampening vibrations, reducing the risk of damage to connected machinery.
7. Compensation for Misalignment: Diaphragm couplings can compensate for angular, parallel, and axial misalignment, although their angular misalignment capacity is typically higher than the other types.

In summary, a diaphragm coupling provides a reliable and efficient way to transmit torque while accommodating misalignment, reducing wear and tear on equipment, and ensuring smooth operation in various mechanical systems.

editor by CX 2024-04-13