Product Description
JM II J Type Diaphragm Coupling With Intermediate Shaft
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.
JMIIJ Type Diaphragm Coupling Basic Parameter And Main Dimension(JB/T9147-1999)
Type | Nominal torque Tn |
Peak torque Tmax |
Max Speed nmax |
Bore Diameter d,d1 |
Bore length | D | D1 | D2 | L1min | t | Mass | Rotary inertia |
|||
J1 type | Y type |
L (recommend) |
L1min | Every 1meter of mass added | |||||||||||
L | |||||||||||||||
N·m | N·m | r·min-1 | mm | kg | kg·m2 | ||||||||||
JMIIJ1 | 63 | 100 | 9300 | 20,22,24 | 38 | 52 | 40 | 92 | 53 | 45 | 70 | 8±0.2 | 2 | 4.1 | 0.002 |
25,28 | 44 | 62 | |||||||||||||
30,32,35,38 | 60 | 82 | |||||||||||||
JMIIJ2 | 100 | 200 | 8400 | 25,28 | 44 | 62 | 45 | 102 | 63 | 80 | 2.9 | 0.003 | |||
30,32,35,38 | 60 | 82 | |||||||||||||
40,42,45 | 84 | 112 | |||||||||||||
JMIIJ3 | 250 | 400 | 6700 | 30,32,35,38 | 60 | 82 | 55 | 128 | 77 | 76 | 96 | 11±0.3 | 5.7 | 8 | 0.009 |
40,42,45,48,50,55 | 84 | 112 | |||||||||||||
JMIIJ4 | 500 | 800 | 5900 | 35,38 | 60 | 82 | 65 | 145 | 91 | 116 | 8.5 | 0.017 | |||
40,42,45,48,50,55,56 | 84 | 112 | |||||||||||||
60,63,65 | 107 | 142 | |||||||||||||
JMIIJ5 | 800 | 1250 | 5100 | 40,42,45,48,50,55,56 | 84 | 112 | 75 | 168 | 105 | 102 | 136 | 14±0.3 | 12.5 | 12 | 0.034 |
60,63,65,70,71,75 | 107 | 142 | |||||||||||||
JMIIJ6 | 1250 | 2000 | 4750 | 45,48,50,55,56 | 84 | 112 | 80 | 180 | 112 | 140 | 15±0.4 | 16.5 | 0.053 | ||
60,63,65,70,71,75 | 107 | 142 | |||||||||||||
80 | 132 | 172 | |||||||||||||
JMIIJ7 | 2000 | 3150 | 4300 | 50,55,56 | 84 | 112 | 200 | 120 | 114 | 21 | 19 | 0.082 | |||
60,63,65,70,71,75 | 107 | 142 | |||||||||||||
80,85 | 132 | 172 | |||||||||||||
JMIIJ8 | 2500 | 4000 | 4200 | 55,56 | 84 | 112 | 205 | 120 | 20±0.4 | 23 | 0.092 | ||||
60,63,65,70,71,75 | 107 | 142 | |||||||||||||
80,85 | 132 | 172 | |||||||||||||
JMIIJ9 | 3150 | 5000 | 4000 | 55,56 | 84 | 112 | 90 | 215 | 128 | 127 | 160 | 20±0.4 | 27 | 21 | 0.117 |
60,63,65,70,71,75 | 107 | 142 | |||||||||||||
80,85,90 | 132 | 172 | |||||||||||||
JMIIJ10 | 4000 | 6300 | 3650 | 60,63,65,70,71,75 | 107 | 142 | 100 | 235 | 132 | 170 | 23±0.5 | 36 | 0.191 | ||
80,85,90,95 | 132 | 172 | |||||||||||||
JMIIJ11 | 5000 | 8000 | 3400 | 60,63,65,70,71,75 | 107 | 142 | 250 | 145 | 140 | 42 | 26 | 0.252 | |||
80,82,90,95 | 132 | 172 | |||||||||||||
100 | 167 | 212 | |||||||||||||
JMIIJ12 | 6300 | 10000 | 3200 | 60,63,65,70,71,75 | 107 | 142 | 110 | 270 | 155 | 190 | 50 | 0.349 | |||
80,85,90,95 | 132 | 172 | |||||||||||||
100,110 | 167 | 212115 | |||||||||||||
JMIIJ13 | 8000 | 12500 | 2850 | 65,70,71,75 | 107 | 142 | 115 | 300 | 162 | 165 | 200 | 27±0.6 | 66 | 47 | 0.56 |
80,85,90,95 | 132 | 172 | |||||||||||||
100,110 | 167 | 212 | |||||||||||||
JMIIJ14 | 10000 | 16000 | 2700 | 70,71,75 | 107 | 142 | 125 | 320 | 176 | 220 | 78 | 0.75 | |||
80,85,90,95 | 132 | 172 | |||||||||||||
100,110,120,125 | 167 | 212 | |||||||||||||
JMIIJ15 | 12500 | 20000 | 2450 | 75 | 107 | 142 | 140 | 350 | 186 | 240 | 32±0.7 | 110 | 51 | 1.26 | |
80,85,90,95 | 132 | 172 | |||||||||||||
100,110,120,125 | 167 | 212 | |||||||||||||
130 | 202 | 252 | |||||||||||||
JMIIJ16 | 16000 | 25000 | 2300 | 80,85,90,95 | 132 | 172 | 145 | 370 | 203 | 219 | 250 | 125 | 72 | 1.63 | |
100,110,120,125 | 167 | 212 | |||||||||||||
130,140 | 202 | 252 | |||||||||||||
JMIIJ17 | 20000 | 31500 | 2150 | 90,95 | 132 | 172 | 165 | 400 | 230 | 290 | 160 | 2.45 | |||
100,110,120,125 | 167 | 212 | |||||||||||||
130,140,150 | 202 | 252 | |||||||||||||
160 | 242 | 302 | |||||||||||||
JMIIJ18 | 25000 | 40000 | 1950 | 100,110,120,125 | 167 | 212 | 175 | 440 | 245 | 300 | 38±0.9 | 220 | 3.99 | ||
130,140,150 | 202 | 252 | |||||||||||||
160,170 | 242 | 302 | |||||||||||||
JMIIJ19 | 31500 | 50000 | 1850 | 100,110,120,125 | 167 | 212 | 185 | 460 | 260 | 267 | 320 | 245 | 89 | 4.98 | |
130,140,150 | 202 | 252 | |||||||||||||
160,170,180 | 242 | 302 | |||||||||||||
JMIIJ20 | 35500 | 56000 | 1800 | 120,125 | 167 | 212 | 200 | 480 | 280 | 267 | 350 | 38±0.9 | 275 | 89 | 6.28 |
130,140,150 | 202 | 252 | |||||||||||||
160,170,180 | 242 | 302 | |||||||||||||
190,200 | 282 | 352 | |||||||||||||
JMIIJ21 | 40000 | 63000 | 1700 | 120,125 | 167 | 212 | 210 | 500 | 295 | 370 | 320 | 7.68 | |||
130,140,150 | 202 | 252 | |||||||||||||
160,170,180 | 242 | 302 | |||||||||||||
190,200 | 282 | 352 | |||||||||||||
JMIIJ22 | 50000 | 80000 | 1600 | 140,150 | 202 | 252 | 220 | 450 | 310 | 299 | 380 | 44±1 | 400 | 110 | 11.6 |
160,170,180 | 242 | 302 | |||||||||||||
190,200,220 | 282 | 352 | |||||||||||||
JMIIJ23 | 63000 | 100000 | 1450 | 140,150 | 202 | 252 | 240 | 600 | 335 | 356 | 410 | 50±1.2 | 560 | 145 | 19.8 |
160,170,180 | 242 | 302 | |||||||||||||
190,200,220 | 282 | 352 | |||||||||||||
240 | 330 | 410 | |||||||||||||
JMIIJ24 | 80000 | 125000 | 1400 | 160,170,180 | 242 | 302 | 255 | 620 | 350 | 440 | 620 | 23.6 | |||
190,200,220 | 282 | 352 | |||||||||||||
240,250 | 330 | 410 | |||||||||||||
JMIIJ25 | 90000 | 140000 | 1300 | 180 | 242 | 302 | 275 | 660 | 385 | 480 | 740 | 31.9 | |||
190,200,220 | 282 | 352 | |||||||||||||
240,250,260 | 330 | 410 | |||||||||||||
280,300 | 380 | 470 | |||||||||||||
JMIIJ26 | 12000 | 180000 | 1200 | 190,200,220 | 282 | 352 | 295 | 720 | 410 | 406 | 510 | 60±1.4 | 970 | 190 | 50.4 |
240,250,260 | 330 | 410 | |||||||||||||
280,300 | 380 | 470 | |||||||||||||
JMIIJ27 | 140000 | 200000 | 1150 | 220 | 282 | 352 | 300 | 740 | 420 | 520 | 1050 | 57 | |||
240,250,260 | 330 | 410 | |||||||||||||
280,300 | 380 | 470 | |||||||||||||
JMIIJ28 | 160000 | 224000 | 1100 | 240,250,260 | 330 | 410 | 320 | 770 | 450 | 457 | 560 | 1200 | 215 | 69.4 | |
280,300 | 380 | 470 | |||||||||||||
JMIIJ29 | 180000 | 280000 | 1050 | 250,260 | 330 | 410 | 350 | 820 | 490 | 600 | 1400 | 95.5 | |||
280,300,320 | 380 | 470 | |||||||||||||
340 | 450 | 550 | |||||||||||||
JMIIJ30 | 280000 | 450000 | 1000 | 280,300,320 | 380 | 470 | 350 | 875 | 480 | 559 | 620 | 50±1.6 | 1400 | 235 | 96.5 |
340,360 | 450 | 550 | 550 | 109.5 | |||||||||||
JMIIJ31 | 400000 | 630000 | 930 | 300,320 | 380 | 470 | 935 | 520 | 610 | 630 | 60±1.0 | 1800 | 290 | 142 | |
340,360,380 | 450 | 550 | 560 | 152 | |||||||||||
400 | 540 | 650 | 600 | 162 | |||||||||||
JMIIJ32 | 450000 | 710000 | 880 | 320 | 380 | 470 | 380 | 1030 | 480 | 622 | 690 | 2250 | 330 | 194 | |
340,360,380 | 450 | 550 | 600 | 224 | |||||||||||
400,420 | 540 | 650 | 640 | 240 | |||||||||||
JMIIJ33 | 560000 | 900000 | 820 | 360,380 | 450 | 550 | 400 | 1080 | 580 | 660 | 726 | 66±2.2 | 2750 | 390 | 271 |
400,420,440,450,460 | 540 | 650 | 700 | 325 | |||||||||||
JMIIJ34 | 1000000 | 1600000 | 740 | 400,420,440,450 | 540 | 650 | 460 | 1160 | 620 | 750 | 836 | 70±2.3 | 3500 | 450 | 387 |
160,480,500 | 540 | 650 | 750 | 465 | |||||||||||
JMIIJ35 | 1400000 | 2240000 | 680 | 400,420,440,450,480,500 | 540 | 650 | 520 | 1290 | 790 | 820 | 946 | 10±2.6 | 5000 | 570 | 750 |
530,560 | 680 | 800 | 840 | 810 | |||||||||||
JMIIJ36 | 2000000 | 3150000 | 620 | 480,500 | 540 | 650 | 570 | 1410 | 760 | 900 | 1040 | 92±2.8 | 6600 | 710 | 1050 |
530,560,600 | 680 | 800 | 920 | 1290 | |||||||||||
JMIIJ37 | 2800000 | 4000000 | 570 | 450,460,480,500 | 540 | 650 | 610 | 1530 | 810 | 1000 | 1100 | 105±3 | 8400 | 880 | 1630 |
530,560,600 | 680 | 800 | 980 | 1950 | |||||||||||
JMIIJ38 | 4000000 | 6000000 | 520 | 560,600,630 | 680 | 800 | 670 | 1670 | 950 | 1100 | 1210 | 115±3.4 | 11000 | 1050 | 2670 |
670,710 | 780 | – | 1070 | 3030 | |||||||||||
JMIIJ39 | 5000000 | 8000000 | 480 | 600,630 | 680 | 800 | 730 | 1830 | 970 | 1200 | 1320 | 125±3.7 | 14500 | 1350 | 4060 |
670,710,750 | 780 | – | 1170 | 4800 | |||||||||||
JMIIJ40 | 6300000 | 10000000 | 430 | 670,710,750 | 780 | 800 | 2000 | 1140 | 1300 | 1450 | 130±4 | 19000 | 1600 | 6600 | |
800,850 | 880 | 1290 | 7500 | ||||||||||||
JMIIJ41 | 8000000 | 12500000 | 400 | 750 | 780 | 2200 | 1260 | 1400 | 1600 | 140±4.4 | 2500 | 1850 | 10400 | ||
800,850 | 880 | 1420 | 11900 | ||||||||||||
JMIIJ42 | 10000000 | 16000000 | 350 | 800,850 | 880 | 960 | 2400 | 1370 | 1500 | 1760 | 32000 | 2100 | 15200 | ||
900,950 | 980 | 1550 | 17400 |
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 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
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
Safety Considerations When Using Diaphragm Couplings in Critical Applications
When using diaphragm couplings in critical applications, certain safety considerations are essential to ensure reliable and safe operation. Here are some important safety considerations:
- Proper Installation:
- Regular Inspections:
- Monitoring Temperature and Torque:
- Environment Compatibility:
- Redundancy and Backup Systems:
- Compliance with Industry Standards:
- Operator Training:
- Emergency Shutdown Procedures:
Ensure that the diaphragm coupling is installed correctly, following the manufacturer’s guidelines and recommended torque values for fasteners. Improper installation can lead to misalignment, excessive vibrations, and premature wear of the coupling components.
Perform regular inspections of the diaphragm coupling to check for signs of wear, fatigue, or damage. Regular maintenance helps identify potential issues early, allowing for timely replacement and preventing unexpected failures.
In critical applications, it’s crucial to monitor the temperature and torque levels of the diaphragm coupling during operation. Excessive heat or torque can lead to coupling failure, so having monitoring systems in place helps detect abnormal conditions and take necessary actions promptly.
Consider the operating environment of the diaphragm coupling. In corrosive environments, use materials that are resistant to chemical attacks, and in high-temperature settings, choose materials that can withstand elevated temperatures without compromising performance.
In critical applications, consider implementing redundancy or backup systems to ensure continued operation in the event of a failure. Having redundant couplings or alternative power transmission methods can enhance the overall reliability of the system.
Adhere to relevant industry standards and guidelines when selecting and using diaphragm couplings in critical applications. These standards ensure that the coupling meets specific safety and performance requirements.
Ensure that operators and maintenance personnel receive proper training on the installation, operation, and maintenance of the diaphragm coupling. Well-trained personnel can identify potential issues and take appropriate actions to maintain safe operation.
Establish clear emergency shutdown procedures to stop the machinery quickly in case of any abnormality or unsafe condition related to the diaphragm coupling. Emergency shutdown procedures are crucial for protecting personnel and equipment from harm.
By considering these safety considerations and implementing appropriate measures, diaphragm couplings can be used with confidence in critical applications, ensuring safe and reliable operation in various industries and systems.
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:
- Dynamic Balancing:
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 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.
Can Diaphragm Couplings Accommodate Different Shaft Sizes and Handle High Torque Loads?
Yes, diaphragm couplings are designed to accommodate different shaft sizes and handle high torque loads efficiently. Here’s how they achieve these functionalities:
Accommodating Different Shaft Sizes:
Diaphragm couplings are available in various sizes and configurations, allowing them to accommodate different shaft diameters. The hubs of the coupling can be manufactured with different bore sizes to match the specific diameter of the connected shafts. This versatility makes diaphragm couplings suitable for a wide range of applications, where the shafts may have different sizes.
Handling High Torque Loads:
Despite their flexible design, diaphragm couplings are capable of handling high torque loads. The flexible diaphragm, typically made of high-strength metal, can transmit torque effectively between the shafts without significant power loss. The corrugations or convolutions in the diaphragm contribute to its torsional rigidity, ensuring efficient torque transmission even at high levels of power.
Moreover, the metal diaphragm’s ability to flex and absorb misalignment also helps in distributing the torque evenly, minimizing stress concentrations on the coupling and connected machinery. This feature allows diaphragm couplings to maintain their performance and reliability under demanding conditions with high torque requirements.
In summary, diaphragm couplings can accommodate different shaft sizes by offering a range of hub sizes and configurations. Additionally, they are capable of handling high torque loads efficiently due to the torsional rigidity of the flexible metal diaphragm and its ability to absorb misalignment, ensuring smooth and reliable torque transmission in various mechanical systems.
editor by CX 2024-05-06