Product Description

JMIJ Type With Intermediate Diaphragm Shaft Coupling (JMIJ)

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.

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.

JMIJ Type Diaphragm Coupling Main Dimension(JB/T9147-1999)

Type Nominal  torque
Tn
Peak torque
Tmax
Max
Speed
np
Bore diameter
d
Bore Length D t L2
min
Mass Rotary inertia
Y type J,J1,Z,Z1 type L(recommend)
L L L1
N·m N·m r·min-1 mm kg kg·m2
JMIJ1 25 80 6000 14 32 J127
Z120
35 90 8.8 100 1.8 0.0013
16,18,19 42 30
20,22 52 38
JMIJ2 63 180 5000 18,19 42 30 45 100 9.5 2.4 0.002
20,22,24 52 38
25 62 44
JMIJ3 100 315 5000 20,22,24 52 38 50 120 11 120 4.1 0.0047
25,28 62 44
30 82 60
JMIJ4 160 500 4500 24 52 38 55 130 12.5 5.4 0.0069
25,28 62 44
30,32,35 82 60
JMIJ5 250 710 4000 28 62 44 60 150 14 140 8.8 0.5711
30,32,35,38 82 60
40 112 84
JMIJ6 400 1120 3600 32,35,38 82 82 60 65 170 15.5 13.4 0.5711
40,42,45,48,
50
112 112 84
JMIJ7 630 1800 3000 40,42,45,48,
50,55,56
112 112 84 70 210 19 150 22.3 0..76
60 142 107
JMIJ8 1000 2500 2800 45,48,50,55,
56
112 112 84 80 240 22.5 180 36 0.1602
60,63,65,70 142 107
JMIJ9 1600 4000 2500 55,56 112 84 85 260 24 220 48 0.2509
60,63,70,71,
75
142 107
80 172 132
JMIJ10 2500 6300 2000 63,65,70,71,75 142 142 107 90 280 17 250 85 0.5159
80,85,90,95 172 132
JMIJ11 4000 9000 1800 75 142 142 107 95 300 19.5 290 112 0.8223
80,85,90,95 172 172 132
100,110 212 167
JMIJ12 6300 12500 1600 90,95 172 132 120 340 23 300 152 1.4109
100,110,120,125 212 167

           
    
Production Pictures

♦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 /* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

elastic coupling

Reducing Vibration and Shock in Machinery with Elastic Couplings

Elastic couplings play a crucial role in minimizing vibration and shock in machinery by offering flexibility and damping characteristics. Here’s how they contribute to this important function:

  • Vibration Absorption: Elastic couplings are designed with flexible elements that can absorb and dampen vibrations generated by rotating machinery. These flexible elements act as shock absorbers, reducing the transmission of vibrations to other parts of the system.
  • Isolation: The inherent flexibility of elastic couplings isolates vibrations and shocks from one side of the coupling to the other. This prevents vibrations from propagating throughout the connected components, helping to protect sensitive equipment and improve overall system performance.
  • Resonance Damping: Elastic couplings can help dampen resonance frequencies that can occur in machinery during operation. By absorbing and dissipating energy, they reduce the risk of resonance-related issues that can lead to mechanical failure or decreased efficiency.
  • Smooth Torque Transmission: Elastic couplings offer a smooth torque transmission that helps reduce sudden torque spikes and shocks during start-up or sudden load changes. This prevents abrupt mechanical stresses that can lead to vibration and shock propagation.
  • Increased Equipment Lifespan: By minimizing the impact of vibrations and shocks, elastic couplings contribute to the longevity of connected machinery and components. Reduced vibration-related wear and tear can extend the service life of the entire system.

Overall, elastic couplings are effective tools for managing vibration and shock in machinery, enhancing operational reliability, reducing maintenance needs, and maintaining optimal performance.

elastic coupling

Alternatives to Elastic Couplings for Flexible Connections in Machinery

There are several alternatives to elastic couplings for achieving flexible connections in machinery:

1. Universal Joints: Universal joints, also known as U-joints, are mechanical devices that allow rotational motion between two shafts at different angles. They are suitable for applications with significant misalignment.

2. Cardan Shafts: Cardan shafts consist of a series of universal joints connected in a line, allowing for the transmission of torque and rotation in complex systems.

3. Oldham Couplings: Oldham couplings use sliding disks to transmit torque while accommodating small misalignments. They are suitable for applications where precise positioning is required.

4. Beam Couplings: Beam couplings use a flexible beam to transmit torque and compensate for angular and axial misalignment.

5. Diaphragm Couplings: Diaphragm couplings use thin diaphragms to transmit torque while compensating for misalignment. They are often used in high-performance applications.

6. Gear Couplings: Gear couplings use teethed gears to transmit torque and accommodate misalignment. They are suitable for heavy-duty applications.

7. Chain Couplings: Chain couplings use roller chains to transmit torque and handle misalignment. They are commonly used in low-speed, high-torque applications.

8. Bellows Couplings: Bellows couplings use a bellows-like flexible element to transmit torque while compensating for misalignment.

Each of these alternatives has its own advantages and limitations, and the choice depends on the specific requirements of the application.

elastic coupling

Benefits of Using Elastic Couplings in Industrial Machinery

Elastic couplings offer several advantages when used in industrial machinery:

  • Misalignment Compensation: Elastic couplings can accommodate small angular, axial, and radial misalignments between connected shafts. This ability to compensate for misalignment helps prolong the life of machinery components and reduces the risk of premature wear.
  • Vibration Damping: The elastic element in the coupling absorbs and dampens vibrations generated during operation. This feature improves the overall smoothness of machinery operation, reduces noise, and minimizes the transmission of vibrations to other parts of the system.
  • Shock Absorption: Elastic couplings absorb sudden shocks or impacts that may occur during operation. By reducing the impact load on the connected components, the coupling helps prevent damage and extends the lifespan of the machinery.
  • Reduced Maintenance: The flexibility and shock-absorbing properties of elastic couplings contribute to lower maintenance requirements. Machinery components experience less stress and wear, resulting in longer intervals between maintenance tasks.
  • Protection of Equipment: Elastic couplings act as a protective barrier between connected machinery. They isolate vibrations and shocks, preventing these forces from propagating throughout the system and potentially causing damage.
  • Improved Efficiency: By minimizing misalignment-related losses and reducing vibrations, elastic couplings contribute to improved machinery efficiency. This can lead to energy savings and better overall performance.

In summary, elastic couplings play a crucial role in enhancing the reliability, longevity, and efficiency of industrial machinery by addressing misalignment, dampening vibrations, absorbing shocks, and minimizing maintenance needs.

China Standard Jmij Double Key Elastic Diaphragm Coupling  China Standard Jmij Double Key Elastic Diaphragm Coupling
editor by CX 2024-02-04