Product Description

                           

JM II J Type Diaphragm Coupling With Intermediate Shaft

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.
 

Product Parameters

JMIIJ Type Diaphragm Coupling Basic Parameter And Main Dimension(JB/T9147-1999)

Type	Nominal torque Tn	Peak torque Tmax	Max Speed nmax	Bore Diameter d,d1	Bore length			D	D1	D2	L1min	t	Mass		Rotary inertia
					J1 type	Y type	L (recommend)						L1min	Every 1meter of mass added
					L
	N·m	N·m	r·min-1	mm									kg		kg·m2
JMIIJ1	63	100	9300	20,22,24	38	52	40	92	53	45	70	8±0.2	2	4.1	0.002
				25,28	44	62
				30,32,35,38	60	82
JMIIJ2	100	200	8400	25,28	44	62	45	102	63		80		2.9		0.003
				30,32,35,38	60	82
				40,42,45	84	112
JMIIJ3	250	400	6700	30,32,35,38	60	82	55	128	77	76	96	11±0.3	5.7	8	0.009
				40,42,45,48,50,55	84	112
JMIIJ4	500	800	5900	35,38	60	82	65	145	91		116		8.5		0.017
				40,42,45,48,50,55,56	84	112
				60,63,65	107	142
JMIIJ5	800	1250	5100	40,42,45,48,50,55,56	84	112	75	168	105	102	136	14±0.3	12.5	12	0.034
				60,63,65,70,71,75	107	142
JMIIJ6	1250	2000	4750	45,48,50,55,56	84	112	80	180	112		140	15±0.4	16.5		0.053
				60,63,65,70,71,75	107	142
				80	132	172
JMIIJ7	2000	3150	4300	50,55,56	84	112		200	120	114			21	19	0.082
				60,63,65,70,71,75	107	142
				80,85	132	172
JMIIJ8	2500	4000	4200	55,56	84	112		205	120			20±0.4	23		0.092
				60,63,65,70,71,75	107	142
				80,85	132	172
JMIIJ9	3150	5000	4000	55,56	84	112	90	215	128	127	160	20±0.4	27	21	0.117
				60,63,65,70,71,75	107	142
				80,85,90	132	172
JMIIJ10	4000	6300	3650	60,63,65,70,71,75	107	142	100	235	132		170	23±0.5	36		0.191
				80,85,90,95	132	172
JMIIJ11	5000	8000	3400	60,63,65,70,71,75	107	142		250	145	140			42	26	0.252
				80,82,90,95	132	172
				100	167	212
JMIIJ12	6300	10000	3200	60,63,65,70,71,75	107	142	110	270	155		190		50		0.349
				80,85,90,95	132	172
				100,110	167	212115
JMIIJ13	8000	12500	2850	65,70,71,75	107	142	115	300	162	165	200	27±0.6	66	47	0.56
				80,85,90,95	132	172
				100,110	167	212
JMIIJ14	10000	16000	2700	70,71,75	107	142	125	320	176		220		78		0.75
				80,85,90,95	132	172
				100,110,120,125	167	212
JMIIJ15	12500	20000	2450	75	107	142	140	350	186		240	32±0.7	110	51	1.26
				80,85,90,95	132	172
				100,110,120,125	167	212
				130	202	252
JMIIJ16	16000	25000	2300	80,85,90,95	132	172	145	370	203	219	250		125	72	1.63
				100,110,120,125	167	212
				130,140	202	252
JMIIJ17	20000	31500	2150	90,95	132	172	165	400	230		290		160		2.45
				100,110,120,125	167	212
				130,140,150	202	252
				160	242	302
JMIIJ18	25000	40000	1950	100,110,120,125	167	212	175	440	245		300	38±0.9	220		3.99
				130,140,150	202	252
				160,170	242	302
JMIIJ19	31500	50000	1850	100,110,120,125	167	212	185	460	260	267	320		245	89	4.98
				130,140,150	202	252
				160,170,180	242	302
JMIIJ20	35500	56000	1800	120,125	167	212	200	480	280	267	350	38±0.9	275	89	6.28
				130,140,150	202	252
				160,170,180	242	302
				190,200	282	352
JMIIJ21	40000	63000	1700	120,125	167	212	210	500	295		370		320		7.68
				130,140,150	202	252
				160,170,180	242	302
				190,200	282	352
JMIIJ22	50000	80000	1600	140,150	202	252	220	450	310	299	380	44±1	400	110	11.6
				160,170,180	242	302
				190,200,220	282	352
JMIIJ23	63000	100000	1450	140,150	202	252	240	600	335	356	410	50±1.2	560	145	19.8
				160,170,180	242	302
				190,200,220	282	352
				240	330	410
JMIIJ24	80000	125000	1400	160,170,180	242	302	255	620	350		440		620		23.6
				190,200,220	282	352
				240,250	330	410
JMIIJ25	90000	140000	1300	180	242	302	275	660	385		480		740		31.9
				190,200,220	282	352
				240,250,260	330	410
				280,300	380	470
JMIIJ26	12000	180000	1200	190,200,220	282	352	295	720	410	406	510	60±1.4	970	190	50.4
				240,250,260	330	410
				280,300	380	470
JMIIJ27	140000	200000	1150	220	282	352	300	740	420		520		1050		57
				240,250,260	330	410
				280,300	380	470
JMIIJ28	160000	224000	1100	240,250,260	330	410	320	770	450	457	560		1200	215	69.4
				280,300	380	470
JMIIJ29	180000	280000	1050	250,260	330	410	350	820	490		600		1400		95.5
				280,300,320	380	470
				340	450	550
JMIIJ30	280000	450000	1000	280,300,320	380	470	350	875	480	559	620	50±1.6	1400	235	96.5
				340,360	450	550			550						109.5
JMIIJ31	400000	630000	930	300,320	380	470		935	520	610	630	60±1.0	1800	290	142
				340,360,380	450	550			560						152
				400	540	650			600						162
JMIIJ32	450000	710000	880	320	380	470	380	1030	480	622	690		2250	330	194
				340,360,380	450	550			600						224
				400,420	540	650			640						240
JMIIJ33	560000	900000	820	360,380	450	550	400	1080	580	660	726	66±2.2	2750	390	271
				400,420,440,450,460	540	650			700						325
JMIIJ34	1000000	1600000	740	400,420,440,450	540	650	460	1160	620	750	836	70±2.3	3500	450	387
				160,480,500	540	650			750						465
JMIIJ35	1400000	2240000	680	400,420,440,450,480,500	540	650	520	1290	790	820	946	10±2.6	5000	570	750
				530,560	680	800			840						810
JMIIJ36	2000000	3150000	620	480,500	540	650	570	1410	760	900	1040	92±2.8	6600	710	1050
				530,560,600	680	800			920						1290
JMIIJ37	2800000	4000000	570	450,460,480,500	540	650	610	1530	810	1000	1100	105±3	8400	880	1630
				530,560,600	680	800			980						1950
JMIIJ38	4000000	6000000	520	560,600,630	680	800	670	1670	950	1100	1210	115±3.4	11000	1050	2670
				670,710	780	–			1070						3030
JMIIJ39	5000000	8000000	480	600,630	680	800	730	1830	970	1200	1320	125±3.7	14500	1350	4060
				670,710,750	780	–			1170						4800
JMIIJ40	6300000	10000000	430	670,710,750	780		800	2000	1140	1300	1450	130±4	19000	1600	6600
				800,850	880				1290						7500
JMIIJ41	8000000	12500000	400	750	780			2200	1260	1400	1600	140±4.4	2500	1850	10400
				800,850	880				1420						11900
JMIIJ42	10000000	16000000	350	800,850	880		960	2400	1370	1500	1760		32000	2100	15200
				900,950	980				1550						17400

 

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.11HangZhou Road,Chengnan park,HangZhou City,ZheJiang Province,China

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Materials Used to Manufacture Diaphragm Couplings and Their Impact on Performance

Diaphragm couplings are manufactured using various materials, and the choice of material significantly impacts their performance in different applications. Here are some common materials used in diaphragm couplings and their impact on performance:

1. Metallic Alloys:

Stainless steel and other high-strength metallic alloys are widely used in diaphragm couplings. These materials offer excellent durability, high torsional stiffness, and resistance to wear and fatigue. They are well-suited for high-torque applications and environments with demanding operating conditions.

2. High-Temperature Alloys:

In applications where diaphragm couplings are exposed to elevated temperatures, specialized high-temperature alloys like Inconel and Hastelloy are used. These alloys can withstand extreme heat without losing their mechanical properties, making them ideal for use in industries such as steel processing and power generation.

3. Titanium:

Titanium is favored for its lightweight and excellent corrosion resistance. Diaphragm couplings made from titanium are commonly used in aerospace and marine applications where weight reduction and resistance to corrosive environments are critical.

4. Elastomers:

For certain applications that require vibration dampening and shock absorption, diaphragm couplings can be manufactured with elastomeric materials like rubber or urethane. These materials help reduce transmitted vibrations and can be found in pumps, compressors, and automotive drivetrain systems.

5. Non-Metallic Materials:

In situations where electrical isolation or non-magnetic properties are necessary, non-metallic materials like PTFE (Teflon) or polypropylene may be used. These materials are also highly resistant to chemical corrosion, making them suitable for certain chemical processing and semiconductor applications.

The choice of material impacts several aspects of diaphragm coupling performance, including:

• Torsional Stiffness: Metallic alloys and high-temperature materials provide high torsional stiffness, ensuring efficient torque transmission and accuracy in motion control applications.
• Corrosion Resistance: The selection of corrosion-resistant materials is crucial in applications where diaphragm couplings are exposed to corrosive environments, such as in marine or chemical industries.
• Temperature Resistance: High-temperature alloys enable diaphragm couplings to operate effectively in environments with elevated temperatures, such as steel processing or power generation plants.
• Weight: Materials like titanium offer lightweight advantages, making diaphragm couplings suitable for aerospace and other weight-sensitive applications.
• Vibration Damping: Elastomeric materials provide excellent vibration dampening properties, reducing vibrations and noise in certain applications.

Manufacturers carefully select the appropriate material based on the specific requirements of the application to ensure optimal performance and reliability of the diaphragm coupling in a wide range of industries.

How Diaphragm Couplings Handle Torsional Stiffness and Dynamic Balancing in Rotating Machinery

Diaphragm couplings are engineered to address two critical aspects of rotating machinery: torsional stiffness and dynamic balancing. These features ensure efficient power transmission and smooth operation in various industrial applications. Here’s how diaphragm couplings achieve torsional stiffness and dynamic balancing:

• Torsional Stiffness:

Torsional stiffness refers to the ability of a coupling to resist angular deflection or twisting when torque is applied. Diaphragm couplings are designed with a flexible diaphragm made of a high-strength metallic material. This diaphragm connects the two shafts and transmits torque between them.

The design of the diaphragm allows it to flex slightly under load while maintaining its integrity. This controlled flexibility ensures that the diaphragm coupling can handle misalignments and accommodate minor variations in the alignment of the shafts. Despite this flexibility, diaphragm couplings offer high torsional stiffness, ensuring efficient power transmission without significant energy losses due to deformation.

The combination of flexibility and torsional stiffness allows diaphragm couplings to absorb shocks and vibrations, which can occur during start-up or during sudden changes in load. As a result, diaphragm couplings help protect the connected machinery from damage caused by torque fluctuations and torsional vibrations.

• Dynamic Balancing:

Dynamic balancing is crucial to prevent excessive vibrations in rotating machinery, which can lead to premature wear, increased stress on components, and reduced equipment lifespan. Imbalanced rotating parts can cause oscillations and resonance, adversely affecting the overall performance of the system.

Diaphragm couplings are inherently well-balanced due to their symmetrical design and the equal distribution of mass around the center of rotation. This balanced configuration minimizes the generation of vibrations during operation. Additionally, the flexibility of the diaphragm helps dampen any residual vibrations that may arise, further contributing to the dynamic balancing of the system.

In cases where extremely high precision is required, diaphragm couplings can undergo additional balancing processes during manufacturing to fine-tune their dynamic characteristics. This process ensures that the coupling operates optimally even at high rotational speeds.

By efficiently handling torsional stiffness and dynamic balancing, diaphragm couplings contribute to the smooth and reliable operation of rotating machinery across various industries. Their ability to handle misalignments, dampen vibrations, and transmit torque accurately makes them an essential component in many critical applications, such as pumps, compressors, turbines, and more.

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 2024-04-19