China OEM Jmiij High Quality Double Disc Flexible Diaphragm Coupling

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 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 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

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:
  2. 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
  3. Oil and Gas:
  4. 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
  5. Steel and Metal Processing:
  6. 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
  7. Aerospace and Defense:
  8. 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
  9. Marine:
  10. 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
  11. Chemical and Process Industries:
  12. 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.

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

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.

China OEM Jmiij High Quality Double Disc Flexible Diaphragm Coupling  China OEM Jmiij High Quality Double Disc Flexible Diaphragm Coupling
editor by CX 2023-10-19