Product Description

                          JMI Type Diaphragm Coupling(JB/T9147-1999)

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.
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.
   
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 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

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Torque and Speed Limitations of Magnetic Couplings for Different Sizes and Applications

The torque and speed limitations of magnetic couplings depend on various factors, including the size of the coupling and the specific application requirements. Here’s a general overview of these limitations:

• Torque Limitations:

  The torque capacity of a magnetic coupling is influenced by the strength of the magnets used, the size of the coupling, and the materials chosen for the rotor and containment shell. Larger magnetic couplings with stronger magnets and robust materials can handle higher torque requirements.

• Size and Application:

  The size of the magnetic coupling plays a crucial role in determining its torque capacity. Smaller couplings are typically used in low-torque applications, such as laboratory equipment or small pumps. In contrast, larger couplings can handle higher torque demands, making them suitable for industrial-scale pumps and agitators.

• Speed Limitations:

  The maximum speed at which a magnetic coupling can operate depends on several factors, including the rotational speed of the driving and driven shafts and the design of the coupling. High-speed applications, such as centrifugal pumps, require magnetic couplings designed to minimize eddy current losses and ensure stable performance at elevated speeds.

• Specialized Applications:

  Some magnetic couplings are specifically designed for high-speed or high-torque applications, such as in large industrial pumps or agitators. These specialized couplings are engineered with materials and construction techniques to optimize performance under demanding conditions.

• Customization Options:

  Manufacturers of magnetic couplings may offer customization options to tailor the torque and speed ratings to the specific needs of the application. This can involve selecting different magnet configurations, materials, and overall design adjustments to achieve the desired performance characteristics.

It is essential to consult with the coupling manufacturer or a qualified engineer to determine the appropriate magnetic coupling size, torque, and speed ratings for a specific application. Factors such as the fluid properties, load requirements, and environmental conditions should be taken into account to ensure the coupling’s optimal performance and reliability.

Are Magnetic Couplings Suitable for High-Torque or High-Speed Applications in Various Industries?

Yes, magnetic couplings are suitable for high-torque or high-speed applications in various industries, depending on the specific design and material selection. These couplings offer distinct advantages that make them a viable choice for demanding applications with elevated torque and speed requirements.

Here’s how magnetic couplings perform in high-torque and high-speed scenarios:

1. High-Torque Applications:

   Magnetic couplings can handle high-torque applications efficiently. Neodymium and samarium cobalt magnets, known for their strong magnetic properties, enable magnetic couplings to transmit substantial torque without the need for physical contact. The absence of frictional wear and the robustness of these magnet materials make magnetic couplings well-suited for applications that demand high torque, such as large pumps, agitators, mixers, and heavy-duty industrial machinery.

2. High-Speed Applications:

   Magnetic couplings can also be designed for high-speed applications. The absence of physical contact between the driving and driven components reduces the risk of mechanical wear and allows magnetic couplings to operate smoothly at high rotational speeds. The magnetic fields effectively transmit power without compromising efficiency or generating excessive heat. Industries such as automotive, aerospace, and precision machinery benefit from magnetic couplings’ ability to maintain performance and reliability at high speeds.

3. Advantages in Various Industries:

   Magnetic couplings find applications across diverse industries due to their ability to handle high-torque and high-speed requirements. Some notable industries where magnetic couplings are utilized include:

   • Chemical and Petrochemical: Magnetic couplings are employed in pumps and agitators, where they prevent fluid leakage and provide a hermetically sealed solution. They are ideal for handling aggressive chemicals and corrosive substances.
   • Pharmaceutical: In pharmaceutical processes, magnetic couplings are used in mixers and reactors to prevent contamination and ensure sterile operation.
   • Automotive: Magnetic couplings find use in cooling systems, turbochargers, and various engine components to enhance efficiency and reduce maintenance.
   • Renewable Energy: In wind turbines, magnetic couplings are utilized to transfer power between the turbine rotor and the generator, offering a maintenance-free and reliable solution.
   • Food and Beverage: Magnetic couplings are employed in pumps and mixers for hygienic applications, ensuring no product contamination and meeting food safety standards.

Overall, magnetic couplings demonstrate versatility and effectiveness in high-torque and high-speed applications across multiple industries. Their ability to provide reliable power transmission without mechanical wear and the advantages of hermetic sealing make them an attractive choice for critical systems requiring efficiency, safety, and reduced maintenance.

Different Types of Magnetic Couplings Used in Various Applications

Magnetic couplings come in different configurations to suit various applications and specific requirements. Some of the common types of magnetic couplings include:

• Standard Magnetic Couplings:

  These are the most basic and widely used magnetic couplings. They consist of two rotors with permanent magnets and a containment shell. Standard magnetic couplings are suitable for a wide range of applications, providing non-contact power transmission, misalignment compensation, and isolation between shafts.

• High Torque Magnetic Couplings:

  High torque magnetic couplings are designed to transmit higher levels of torque between the input and output shafts. They feature stronger and larger magnets to handle increased power transmission requirements. These couplings are commonly used in heavy-duty industrial applications, such as mixers, agitators, and large pumps.

• Low Torque Magnetic Couplings:

  Conversely, low torque magnetic couplings are suitable for applications with lower torque demands. They have smaller and less powerful magnets, making them ideal for applications where precision and efficiency are essential, such as medical devices and laboratory equipment.

• Variable Torque Magnetic Couplings:

  Variable torque magnetic couplings provide the ability to adjust the torque transmission level. These couplings can be designed with adjustable magnets or magnetic fields, allowing users to control the torque according to the specific needs of the application. They are used in systems where variable speed and torque are required, such as variable speed pumps and compressors.

• High-Speed Magnetic Couplings:

  High-speed magnetic couplings are designed to handle rapid rotations without compromising on efficiency and reliability. They feature special designs and materials to reduce eddy currents and losses associated with high-speed operation. These couplings are commonly used in centrifugal pumps, turbo machinery, and high-speed motors.

• Compact Magnetic Couplings:

  Compact magnetic couplings are designed to have a smaller footprint, making them suitable for applications with limited space. They are commonly used in compact pumps, microfluidic systems, and portable devices where space efficiency is crucial.

• Bi-Directional Magnetic Couplings:

  Bi-directional magnetic couplings allow power transmission in both directions between the input and output shafts. They are used in applications where bidirectional rotation or periodic reversing of motion is required, such as in mixing applications and reversible pumps.

• Custom Magnetic Couplings:

  Manufacturers can also create custom magnetic couplings tailored to specific applications. Custom couplings are designed to meet unique requirements, such as special torque levels, specific environmental conditions, or integration with proprietary systems.

The choice of the magnetic coupling type depends on factors such as torque requirements, speed, space constraints, environmental conditions, and the level of customization needed for the specific application.

editor by CX 2024-03-28