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 /* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Are there any Safety Considerations or Guidelines for Using Magnetic Couplings in Hazardous Environments?

Yes, when using magnetic couplings in hazardous environments, there are several safety considerations and guidelines that should be followed to ensure the safety of personnel and equipment. Hazardous environments may involve flammable, explosive, or corrosive substances, and it’s crucial to address potential risks. Here are the safety considerations and guidelines:

1. Material Selection:

   Choose magnetic couplings constructed from materials that are compatible with the hazardous substances present in the environment. For example, some chemicals may be corrosive, so the coupling’s materials must resist corrosion to maintain integrity.

2. Sealing:

   Ensure that the magnetic coupling provides a hermetic seal to prevent fluid leakage and the release of hazardous substances into the environment. The containment shell should be designed to withstand the pressures and temperatures of the specific application.

3. Explosion-Proof:

   In environments where flammable or explosive substances are present, consider using explosion-proof magnetic couplings. These couplings are designed to prevent the ignition of flammable gases or vapors in the event of a fault.

4. Compliance with Regulations:

   Ensure that the magnetic coupling meets all relevant safety and industry standards for hazardous environments. Compliance with regulations, such as ATEX or IECEx, is essential to ensure the coupling’s suitability for use in specific hazardous locations.

5. Environmental Conditions:

   Evaluate the environmental conditions of the hazardous area, including temperature, pressure, and chemical exposure. The magnetic coupling should be rated and designed to withstand the specific conditions of the environment.

6. Grounding:

   Properly ground the magnetic coupling and the associated equipment to dissipate any static charges and prevent sparks that could ignite flammable substances.

7. Installation and Maintenance:

   Follow the manufacturer’s recommended installation and maintenance procedures to ensure the magnetic coupling functions correctly in the hazardous environment. Regular inspections and maintenance are essential to identify and address any potential issues.

8. Training and Awareness:

   Provide training to personnel working in the hazardous area about the risks associated with magnetic couplings and the proper procedures to follow in case of any abnormalities or emergencies.

It is crucial to consult with experts or engineers experienced in hazardous environments to ensure that the magnetic coupling is appropriately selected and installed for the specific application. Following these safety considerations and guidelines will help mitigate risks and ensure safe operation in hazardous environments.

How do Magnetic Couplings Contribute to the Overall System Reliability and Prevent Mechanical Wear?

Magnetic couplings offer several advantages that contribute to the overall system reliability and prevent mechanical wear. These benefits are a result of their non-contact power transmission principle and unique design features. Here’s how magnetic couplings achieve this:

1. No Physical Contact:

   Magnetic couplings operate without any physical contact between the driving and driven components. Unlike traditional mechanical couplings that rely on friction and wear-prone components, magnetic couplings use magnetic fields to transfer torque and power. This absence of physical contact eliminates mechanical wear and reduces the need for regular maintenance and replacement of wearing parts.

2. Hermetic Sealing:

   Magnetic couplings often feature a hermetic sealing design that prevents fluid leakage. The driving and driven components are separated by a sealed containment shell, which ensures that there is no direct exposure to the environment or the fluid being handled. This hermetic sealing not only prevents leakage but also protects sensitive components from contamination and external influences, enhancing the overall system reliability.

3. Reduced Friction Losses:

   Since there is no physical contact between the coupling’s components, magnetic couplings experience minimal friction losses during operation. The reduction in frictional forces translates to higher efficiency and lower energy consumption compared to traditional couplings with sliding or rolling elements.

4. Tolerance to Misalignment:

   Magnetic couplings can accommodate a certain degree of misalignment between the driving and driven components. This misalignment tolerance helps to minimize stress on the coupling and connected equipment, reducing the risk of premature wear or failure in situations where perfect alignment may not be achievable or maintained over time.

5. Overload Protection:

   Some magnetic couplings are designed with built-in overload protection features. In case of excessive torque or sudden overloads, these couplings can disengage or slip, preventing damage to the coupling and the connected machinery. This overload protection contributes to the long-term reliability of the system by avoiding potential catastrophic failures.

6. No Lubrication Required:

   Unlike many traditional mechanical couplings that need regular lubrication to reduce friction and wear, magnetic couplings do not require lubrication. The absence of lubricants simplifies maintenance and eliminates the risk of lubricant contamination in sensitive applications.

Overall, magnetic couplings offer a reliable and efficient solution for various applications, especially in industries where the prevention of mechanical wear, fluid leakage, and frequent maintenance are essential considerations. Their non-contact design, hermetic sealing, and tolerance to misalignment make them an attractive choice for critical systems that demand high reliability and performance.

How Magnetic Couplings Prevent Leakage and Offer a Hermetically Sealed Solution in Industrial Processes

Magnetic couplings provide a hermetically sealed solution in industrial processes by utilizing their unique non-contact power transmission principle. This design allows them to prevent leakage effectively and maintain a reliable, sealed environment. Here’s how magnetic couplings achieve this:

1. Non-Contact Power Transmission:

   Magnetic couplings operate without any physical connection between the driving and driven shafts. Instead, they use a magnetic field to transmit torque from one rotor to another. The absence of direct contact between components eliminates the need for shaft seals that are common in traditional mechanical couplings.

2. Containment Shell:

   Magnetic couplings consist of two rotors—an outer rotor connected to the driving shaft and an inner rotor connected to the driven shaft. These rotors are separated by a containment shell made of non-magnetic material with high magnetic permeability. The containment shell encloses the magnetic fields and acts as a barrier to prevent fluid leakage.

3. Hermetic Sealing:

   The containment shell provides hermetic sealing between the input and output shafts. As the magnetic fields pass through the containment shell, it effectively seals the coupling, creating a barrier that isolates the fluid being handled in the pump or agitator from the external environment. This hermetic sealing prevents fluid leakage, even when dealing with hazardous or corrosive fluids.

4. No Dynamic Seals:

   In mechanical couplings, dynamic seals are used to prevent fluid leakage at the point where the shaft exits the casing. These seals are prone to wear, aging, and failure over time, leading to potential leaks. Magnetic couplings eliminate the need for dynamic seals, reducing the risk of fluid leakage and improving the overall reliability of the system.

5. High Torque Transmission:

   Magnetic couplings are designed to handle high torque transmission, making them suitable for a wide range of industrial processes. The strength of the magnetic field and the proper choice of materials ensure that the coupling remains effective and leak-free even under challenging operating conditions.

Due to their hermetically sealed design, magnetic couplings are commonly used in industries where fluid leakage could lead to product contamination, environmental hazards, or safety risks. These industries include chemical processing, pharmaceuticals, food and beverage, and other applications where a sealed and leak-free environment is critical.

editor by CX 2024-02-16