Product Description

 

JMIJ Type With Intermediate Diaphragm Shaft Coupling (JMIJ)

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.

 

Product Parameters

JMIJ Type Diaphragm Coupling Main Dimension(JB/T9147-1999)

Type	Nominal torque Tn	Peak torque Tmax	Max Speed np	Bore diameter d	Bore Length				D	t	L2 min	Mass	Rotary inertia
					Y type	J,J1,Z,Z1 type		L(recommend)
					L	L	L1
	N·m	N·m	r·min-1	mm								kg	kg·m2
JMIJ1	25	80	6000	14	32	–	J127 Z120	35	90	8.8	100	1.8	0.0013
				16,18,19	42		30
				20,22	52		38
JMIJ2	63	180	5000	18,19	42		30	45	100	9.5		2.4	0.002
				20,22,24	52		38
				25	62		44
JMIJ3	100	315	5000	20,22,24	52	–	38	50	120	11	120	4.1	0.0047
				25,28	62		44
				30	82		60
JMIJ4	160	500	4500	24	52		38	55	130	12.5		5.4	0.0069
				25,28	62		44
				30,32,35	82		60
JMIJ5	250	710	4000	28	62		44	60	150	14	140	8.8	0.5711
				30,32,35,38	82		60
				40	112		84
JMIJ6	400	1120	3600	32,35,38	82	82	60	65	170	15.5		13.4	0.5711
				40,42,45,48, 50	112	112	84
JMIJ7	630	1800	3000	40,42,45,48, 50,55,56	112	112	84	70	210	19	150	22.3	0..76
				60	142	–	107
JMIJ8	1000	2500	2800	45,48,50,55, 56	112	112	84	80	240	22.5	180	36	0.1602
				60,63,65,70	142		107
JMIJ9	1600	4000	2500	55,56	112		84	85	260	24	220	48	0.2509
				60,63,70,71, 75	142		107
				80	172		132
JMIJ10	2500	6300	2000	63,65,70,71,75	142	142	107	90	280	17	250	85	0.5159
				80,85,90,95	172	–	132
JMIJ11	4000	9000	1800	75	142	142	107	95	300	19.5	290	112	0.8223
				80,85,90,95	172	172	132
				100,110	212	–	167
JMIJ12	6300	12500	1600	90,95	172		132	120	340	23	300	152	1.4109
				100,110,120,125	212		167

 

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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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:

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
2. Oil and Gas:

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
3. Steel and Metal Processing:

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
4. Aerospace and Defense:

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
5. Marine:

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
6. Chemical and Process Industries:

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.

Real-World Case Studies of Diaphragm Couplings in Engineering Projects

Diaphragm couplings have been successfully utilized in various engineering projects, providing reliable power transmission and addressing specific challenges faced by different industries. Here are some real-world case studies and success stories showcasing the effectiveness of diaphragm couplings:

1. Case Study 1: Pumping System in Wastewater Treatment Plant

In a wastewater treatment plant, a critical pumping system was experiencing frequent breakdowns due to misalignment issues and vibration-related failures. The plant engineers decided to replace the existing gear couplings with diaphragm couplings to address these problems. The diaphragm couplings’ flexibility allowed them to compensate for the misalignment caused by thermal expansion and pump impeller wear. Additionally, the couplings’ ability to dampen vibrations reduced stress on the pump bearings, resulting in extended maintenance intervals and increased overall system reliability. The successful implementation of diaphragm couplings in this project led to significant cost savings by minimizing downtime and reducing the need for frequent maintenance.

2. Case Study 2: Turbine-Generator Coupling in Power Plant

In a power generation plant, a large gas turbine-generator coupling required replacement due to excessive wear and fatigue-related failures in the previous coupling. The plant engineers opted for a high-performance diaphragm coupling with improved fatigue resistance and higher torque capacity. The flexibility of the diaphragm coupling allowed it to accommodate slight misalignments between the turbine and the generator during operation. This capability reduced the stress on the coupling and mitigated the risk of premature failure. The diaphragm coupling’s ability to handle torsional vibrations and dampen mechanical resonance further improved the overall reliability and performance of the turbine-generator system, resulting in increased power generation efficiency and reduced maintenance costs.

3. Case Study 3: Industrial Compressor System

In an industrial compressor application, the existing coupling experienced frequent failures due to misalignment and shock loads from varying compression demands. The plant engineers replaced the old coupling with a diaphragm coupling featuring high misalignment tolerance and excellent shock absorption properties. The diaphragm coupling’s flexibility effectively compensated for the misalignment between the compressor and the motor, resulting in smoother operation and reduced stress on the drive components. Additionally, the coupling’s ability to absorb sudden shock loads reduced the risk of equipment damage and minimized unplanned downtime. The successful implementation of the diaphragm coupling significantly improved the compressor system’s reliability and contributed to increased productivity in the industrial facility.

These case studies demonstrate the successful application of diaphragm couplings in diverse engineering projects, including wastewater treatment plants, power generation facilities, and industrial compressors. The flexibility, misalignment compensation, and vibration dampening properties of diaphragm couplings have proven to be valuable in addressing specific challenges and enhancing the performance and reliability of critical machinery in various industries.

Advantages of Diaphragm Coupling Compared to Other Types of Couplings

A diaphragm coupling offers several advantages over other types of couplings, making it a popular choice for various applications. Here are some of the key advantages:

1. Torsional Flexibility: Diaphragm couplings provide excellent torsional flexibility, allowing them to compensate for angular, parallel, and axial misalignment between shafts. This flexibility helps in reducing stress on connected equipment and extends their lifespan.
2. No Backlash: Unlike some other couplings, diaphragm couplings have no backlash, which means there is no play or free movement between the connected shafts. This characteristic makes them suitable for applications that require precise and accurate motion transmission.
3. No Lubrication: Diaphragm couplings are typically maintenance-free since they do not require any lubrication. This reduces the overall maintenance costs and simplifies the operation of the mechanical system.
4. High Torque Capacity: Despite their flexible design, diaphragm couplings can handle high torque loads efficiently. This makes them suitable for heavy-duty applications where high power transmission is required.
5. Vibration Damping: The flexibility of the diaphragm in the coupling helps in absorbing and dampening vibrations, reducing the risk of damage to connected machinery and improving the overall system’s performance.
6. Compact Size: Diaphragm couplings are generally compact and lightweight compared to some other coupling types. This feature makes them suitable for applications with limited space or weight constraints.
7. Corrosion Resistance: Diaphragm couplings made from appropriate materials offer excellent corrosion resistance, making them suitable for use in harsh environments or industries where corrosion is a concern.
8. Fail-Safe Design: Diaphragm couplings have a fail-safe design, meaning that in the event of diaphragm failure, they do not lead to catastrophic coupling failure. This enhances the safety and reliability of the mechanical system.
9. Cost-Effectiveness: Considering their low maintenance requirements, long service life, and efficient torque transmission, diaphragm couplings offer a cost-effective solution for various applications.

In conclusion, diaphragm couplings provide significant advantages over other types of couplings, including torsional flexibility, zero backlash, no lubrication needs, high torque capacity, vibration damping, compact size, corrosion resistance, fail-safe design, and cost-effectiveness. These features make them a preferred choice in a wide range of mechanical systems and industrial applications.

editor by CX 2024-05-02