China OEM Aluminum Alloy High Speed Long-Life Diaphragm Coupling

Product Description

Diaphragm Coupling Shaft Coupling (JMI)

JM series diaphragm flexible coupling is widely used in 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.

The main characteristics of JM Series Diaphragm Coupling
1.Compensation 2 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 environment, and can be in shock, vibration, safety and dynamic conditions.

5.Simple structure, light weight, small size, convenient assembly and disassembly. Without moving the machine can be disassembled (with intermediate type), no need of lubrication.

6.Accurately convey the rotational speed, the operation has not turned bad, can be used for the transmission of precision machinery.

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 CZPT 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 shaft 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 special test by Professional Staff according to the standard of ISO9001 and TS16949.

FAQ
Q 1: Are you trading company or 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 of 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 then cost of sample will be deducted.

Q 5: How long is your warranty?
A: Our Warranty is 12 month under normal circumstance.

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

diaphragm coupling

Can Diaphragm Couplings Compensate for Axial, Angular, and Parallel Misalignments?

Yes, diaphragm couplings are designed to compensate for axial, angular, and parallel misalignments between two shafts, making them highly flexible and versatile for various mechanical systems. Here’s how diaphragm couplings handle each type of misalignment:

  • Axial Misalignment:
  • Diaphragm couplings can accommodate a limited amount of axial misalignment, which refers to the offset between the rotational axes of the connected shafts. The flexible diaphragm allows for a slight axial movement, ensuring that the coupling can handle minor misalignments without introducing significant additional stresses to the shafts or coupling components.

  • Angular Misalignment:
  • Diaphragm couplings can also compensate for angular misalignment, which occurs when the rotational axes of the shafts are not parallel. The flexibility of the diaphragm allows it to flex and bend, allowing the coupling to transmit torque efficiently even when the shafts are at an angle to each other.

  • Parallel Misalignment:
  • Parallel misalignment refers to the lateral offset between the shafts in the same plane. Diaphragm couplings can accommodate a certain degree of parallel misalignment due to the flexibility of the diaphragm. This feature helps prevent binding or premature wear on the coupling and connected machinery.

Diaphragm couplings are specifically designed to handle misalignments while maintaining smooth and efficient torque transmission. The flexibility of the diaphragm allows it to compensate for these misalignments, reducing stress on the connected equipment and providing a more reliable power transmission solution.

It’s important to note that while diaphragm couplings can accommodate some misalignments, there are limits to the amount of misalignment they can compensate for. Excessive misalignments beyond the coupling’s specified tolerances can lead to reduced coupling performance, premature wear, and potential failure. Therefore, it is essential to follow the manufacturer’s guidelines and recommendations for allowable misalignments to ensure optimal performance and longevity of the diaphragm coupling in a given application.

diaphragm coupling

How Diaphragm Couplings Handle Torsional Stiffness and Dynamic Balancing in Rotating Machinery

Diaphragm couplings are engineered to address two critical aspects of rotating machinery: torsional stiffness and dynamic balancing. These features ensure efficient power transmission and smooth operation in various industrial applications. Here’s how diaphragm couplings achieve torsional stiffness and dynamic balancing:

  • Torsional Stiffness:
  • Torsional stiffness refers to the ability of a coupling to resist angular deflection or twisting when torque is applied. Diaphragm couplings are designed with a flexible diaphragm made of a high-strength metallic material. This diaphragm connects the two shafts and transmits torque between them.

    The design of the diaphragm allows it to flex slightly under load while maintaining its integrity. This controlled flexibility ensures that the diaphragm coupling can handle misalignments and accommodate minor variations in the alignment of the shafts. Despite this flexibility, diaphragm couplings offer high torsional stiffness, ensuring efficient power transmission without significant energy losses due to deformation.

    The combination of flexibility and torsional stiffness allows diaphragm couplings to absorb shocks and vibrations, which can occur during start-up or during sudden changes in load. As a result, diaphragm couplings help protect the connected machinery from damage caused by torque fluctuations and torsional vibrations.

  • Dynamic Balancing:
  • Dynamic balancing is crucial to prevent excessive vibrations in rotating machinery, which can lead to premature wear, increased stress on components, and reduced equipment lifespan. Imbalanced rotating parts can cause oscillations and resonance, adversely affecting the overall performance of the system.

    Diaphragm couplings are inherently well-balanced due to their symmetrical design and the equal distribution of mass around the center of rotation. This balanced configuration minimizes the generation of vibrations during operation. Additionally, the flexibility of the diaphragm helps dampen any residual vibrations that may arise, further contributing to the dynamic balancing of the system.

    In cases where extremely high precision is required, diaphragm couplings can undergo additional balancing processes during manufacturing to fine-tune their dynamic characteristics. This process ensures that the coupling operates optimally even at high rotational speeds.

By efficiently handling torsional stiffness and dynamic balancing, diaphragm couplings contribute to the smooth and reliable operation of rotating machinery across various industries. Their ability to handle misalignments, dampen vibrations, and transmit torque accurately makes them an essential component in many critical applications, such as pumps, compressors, turbines, and more.

diaphragm coupling

Are There Any Industry Standards or Certifications for Diaphragm Couplings?

Yes, there are industry standards and certifications that apply to diaphragm couplings, ensuring their quality, performance, and safety. Some of the notable standards and certifications include:

  1. American Petroleum Institute (API) Standards: API provides standards for various equipment and components used in the oil and gas industry. For diaphragm couplings used in oil and gas applications, compliance with API standards ensures that the couplings meet specific requirements and are suitable for use in demanding environments.
  2. American Gear Manufacturers Association (AGMA) Standards: AGMA sets standards for various types of couplings, including diaphragm couplings. These standards cover design considerations, materials, performance, and safety factors, ensuring that couplings adhere to industry best practices.
  3. International Organization for Standardization (ISO) Standards: ISO has several standards relevant to couplings in general, which can also apply to diaphragm couplings. ISO standards ensure global consistency in terms of design, manufacturing, and performance criteria.
  4. European Conformity (CE) Marking: Diaphragm couplings intended for sale within the European Economic Area (EEA) must bear the CE marking, indicating that they comply with relevant European Union (EU) directives, including safety and environmental requirements.
  5. American National Standards Institute (ANSI) Standards: ANSI sets standards for various industrial equipment, including couplings. ANSI standards provide guidelines for design, materials, and performance, ensuring safe and reliable operation.
  6. Occupational Safety and Health Administration (OSHA) Compliance: Although not a specific certification for diaphragm couplings, compliance with OSHA regulations is essential to ensure the safety of workers who operate and maintain equipment with diaphragm couplings.

Manufacturers of diaphragm couplings often seek these certifications and comply with relevant industry standards to demonstrate the quality and reliability of their products. Customers and end-users can look for these certifications and standards compliance when selecting diaphragm couplings for their applications, as it provides assurance of the coupling’s performance and adherence to safety requirements.

China OEM Aluminum Alloy High Speed Long-Life Diaphragm Coupling  China OEM Aluminum Alloy High Speed Long-Life Diaphragm Coupling
editor by CX 2023-08-15