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

View More

Can Magnetic Couplings Accommodate Misalignment Between the Driving and Driven Shafts?

Yes, magnetic couplings can accommodate a certain degree of misalignment between the driving and driven shafts. This is one of the significant advantages of using magnetic couplings over traditional mechanical couplings, which often require precise alignment to function properly.

The ability to accommodate misalignment in magnetic couplings is due to their non-contact power transmission principle. In a magnetic coupling, the driving and driven shafts are not physically connected but instead operate through a magnetic field.

When misalignment occurs between the driving and driven shafts, the magnetic fields in the magnetic coupling can adjust to compensate for the misalignment within certain limits. This means that the magnetic coupling can continue to transmit torque and power effectively, even if the shafts are not perfectly aligned.

However, it’s essential to note that while magnetic couplings offer misalignment tolerance, excessive misalignment can still lead to reduced efficiency and increased stress on the coupling components. Therefore, it is recommended to keep misalignment within the specified limits provided by the coupling manufacturer to ensure optimal performance and longevity.

By allowing for some misalignment, magnetic couplings offer greater flexibility during installation and operation. This feature is particularly valuable in applications where shaft alignment may change due to thermal expansion, vibration, or other dynamic factors.

Overall, the misalignment accommodation capability of magnetic couplings contributes to their reliability, reduces the risk of premature wear, and makes them well-suited for various industrial applications, including pumps, mixers, and other rotating equipment.

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.

Working Principle of a Magnetic Coupling and Its Advantages Over Traditional Couplings

A magnetic coupling operates on the principle of magnetism to transmit torque from one shaft to another without direct physical contact. It consists of two rotors, an outer rotor connected to the driving shaft and an inner rotor connected to the driven shaft, with a containment shell separating them.

Here’s how a magnetic coupling works:

1. Permanent Magnets:

   Both the outer and inner rotors contain permanent magnets with alternating poles facing each other. When the driving shaft rotates, the magnets on the outer rotor create a magnetic field.

2. Magnetic Induction:

   This magnetic field induces a corresponding magnetic field in the inner rotor due to the magnetic permeability of the containment shell. As a result, the inner rotor starts to rotate synchronously with the outer rotor.

3. Torque Transmission:

   The interaction between the magnetic fields allows torque to be transferred from the driving shaft to the driven shaft without any physical connection. The two shafts remain completely isolated from each other.

The advantages of magnetic couplings over traditional couplings include:

• No Physical Contact:

  Magnetic couplings offer non-contact power transmission, eliminating wear and friction that can occur in mechanical couplings. This results in longer service life and reduced maintenance requirements.

• Misalignment Compensation:

  Magnetic couplings can tolerate a certain degree of misalignment between the driving and driven shafts. This ability to compensate for misalignment reduces stress on the components and enhances system reliability.

• Hermetic Sealing:

  The containment shell in a magnetic coupling provides hermetic sealing between the input and output shafts. This prevents fluid leakage, making magnetic couplings suitable for applications involving hazardous or sensitive fluids.

• Overload Protection:

  In case of sudden overloads or blockages in the driven system, a magnetic coupling can slip or disengage, protecting the driving motor and connected components from damage.

• No Lubrication Required:

  Since there is no physical contact between components, magnetic couplings do not require lubrication. This feature simplifies maintenance and avoids potential fluid contamination.

Magnetic couplings find applications in various industries, including chemical processing, food and beverage, pharmaceuticals, and power generation, where these advantages are essential for efficient and reliable power transmission.

editor by CX 2024-04-19