Product Description

 

JMI Type Diaphragm Coupling(JB/T9147-1999)

JM Series Diaphragm Coupling of flexible metal flexible coupling, which rely 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 the axial, radial and angular deviation caused by the manufacturing error, installation error, bearing deformation and the change of temperature rise.

Features
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.
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.

Product Parameters

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

Detailed Photos

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 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. We company actively introduce 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.

After Sales Service

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

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Comparison between Couplings with High Torsional Stiffness and Low Torsional Stiffness

Couplings used in motion control systems can vary significantly in their torsional stiffness, which is a crucial characteristic that affects their performance and behavior. Let’s explore the differences between couplings with high torsional stiffness and low torsional stiffness:

• Torsional Stiffness:

  Torsional stiffness refers to the resistance of a coupling to rotational deflection or twisting under the influence of a torque. Couplings with high torsional stiffness offer greater resistance to twisting, while those with low torsional stiffness are more flexible and can accommodate more significant torsional deflections.

• Response to Torque:

  Couplings with high torsional stiffness transmit torque more efficiently from one shaft to another, as they minimize torsional deflection. This characteristic is advantageous in applications where precise torque transmission and minimal power loss are essential. On the other hand, couplings with low torsional stiffness are better at absorbing shocks and torsional vibrations, making them suitable for applications where dampening is required.

• Misalignment Compensation:

  Couplings with high torsional stiffness are less forgiving when it comes to misalignment between shafts. They require more accurate alignment to prevent excessive stress on the coupling and connected components. In contrast, couplings with low torsional stiffness can accommodate some degree of misalignment, reducing the need for precise alignment during installation.

• Resonance and Natural Frequency:

  Couplings with high torsional stiffness have higher natural frequencies and are less prone to resonance. This characteristic is beneficial in high-speed applications where avoiding resonance is critical to prevent damaging vibrations. Couplings with low torsional stiffness, on the other hand, may have lower natural frequencies and need careful consideration to avoid resonance-related issues.

• Stress on Connected Equipment:

  High torsional stiffness couplings can transfer torsional loads more directly to connected equipment, which may increase the stress on other system components. Low torsional stiffness couplings can act as vibration isolators, reducing the impact of torsional loads on connected equipment.

• Application Suitability:

  The choice between high and low torsional stiffness couplings depends on the specific requirements of the application. High torsional stiffness couplings are suitable for applications where precise torque transmission and accuracy are crucial, such as CNC machines and robotics. Low torsional stiffness couplings are ideal for applications involving misalignment, shock absorption, and vibration dampening, such as printing machinery and conveyor systems.

Ultimately, the selection of a coupling with high or low torsional stiffness depends on the specific needs and performance requirements of the motion control system, ensuring optimal functionality and efficiency in the application.

Considerations for Selecting Servo Couplings in High-Speed Applications

High-speed applications present unique challenges that require careful consideration when selecting servo couplings. Here are specific factors to keep in mind:

• Torsional Stiffness: In high-speed applications, torsional stiffness is crucial to ensure rapid response and accuracy. A coupling with sufficient torsional stiffness reduces torsional deflection and maintains precise motion control even at high speeds.
• Dynamic Balance: High-speed operation can magnify any imbalances in the servo system. Choosing a servo coupling with dynamic balance helps minimize vibration and prevents excessive wear on the motor and bearings.
• Material Selection: The material of the servo coupling should be carefully chosen to withstand the high rotational speeds and avoid resonance issues. Consider materials with high strength, low inertia, and excellent fatigue resistance to ensure reliability in high-speed applications.
• Backlash: High-speed systems require quick changes in motion direction. Selecting a zero-backlash coupling reduces the chances of sudden impacts and vibrations due to backlash, ensuring smooth and accurate motion.
• Inertia: The inertia of the servo coupling should be minimized to reduce the system’s overall inertia and allow for rapid acceleration and deceleration without sacrificing performance.
• Temperature Resistance: High-speed operation can generate heat, so the chosen coupling should have good temperature resistance to prevent premature failure or deformation.
• Bearing Loads: Consider the loads exerted on the motor and driven load bearings at high speeds. The coupling should be capable of handling these loads without causing excessive wear on the bearings.
• Installation and Alignment: Proper installation and alignment of the servo coupling are critical in high-speed applications. Ensure precise alignment to avoid introducing additional stresses and misalignments that can compromise system performance.
• Service Life and Maintenance: Evaluate the expected service life of the servo coupling under high-speed conditions and consider the maintenance requirements to ensure long-term reliability.

By considering these specific factors, engineers can select the most suitable servo coupling for high-speed applications, optimizing performance, accuracy, and efficiency while minimizing wear and vibration issues.

Types of Servo Couplings Used in Industrial Automation

Industrial automation often relies on servo couplings to achieve precise motion control and power transmission between servo motors and driven loads. Different types of servo couplings are available, each designed to suit specific application requirements. Here are some common types of servo couplings used in industrial automation:

• Flexible Beam Couplings: Beam couplings are made of a single piece of material with cuts along the length of the coupling, resembling multiple helical beams. They offer flexibility in multiple directions and can handle angular and axial misalignments. Beam couplings are well-suited for applications that require high torsional rigidity and low inertia, making them ideal for high-speed and high-precision systems.
• Bellows Couplings: Bellows couplings consist of a thin-walled metal bellows element that allows angular and axial misalignments. They provide excellent torsional stiffness and low backlash, making them suitable for applications requiring high precision and torque transmission. Bellows couplings are also known for their ability to handle high-speed applications while maintaining accuracy.
• Oldham Couplings: Oldham couplings have three components: two hubs and a center disc. The center disc connects the hubs and allows misalignment compensation in two directions while eliminating backlash. These couplings are effective in applications that require high torque transmission and moderate misalignment tolerance.
• Servo Motor Couplings: Servo motor couplings are specifically designed for use with servo motors. They are versatile and can come in various configurations, such as jaw-type, disk-type, or elastomeric couplings. They offer good misalignment compensation and are suitable for medium- to high-torque applications with moderate to high precision requirements.
• Disc Couplings: Disc couplings consist of thin metal discs stacked alternately to allow angular misalignment. They offer high torsional stiffness and can handle high torque loads while maintaining accurate motion. Disc couplings are commonly used in high-performance servo motor applications where precision and reliability are critical.
• Jaw Couplings: Jaw couplings have two hubs with elastomeric elements in between. They are capable of compensating for small amounts of angular, parallel, and axial misalignments. Jaw couplings are popular in light to medium-duty applications due to their simplicity, cost-effectiveness, and ease of installation.

When selecting a servo coupling for industrial automation, it is essential to consider factors such as torque capacity, misalignment compensation, speed, precision, and environmental conditions. Each type of servo coupling offers distinct advantages and limitations, so choosing the most suitable type will depend on the specific requirements of the application.

editor by CX 2024-03-18