Product Description
JS3500 Series Half Demount Flexible Grid Couplings
♦Description
The flexible nature of the spring-like mesh reduces the magnitude of CHINAMFG loads by dissipating and absorbing impact energy over time, and the short-term overload capacity is twice the rated torque, greatly increasing mesh coupling torque.
Widely used in heavy machinery and general machinery.
Allows higher speeds with good axial, radial and angular compensation capabilities.
High transmission efficiency. The transmission efficiency is as high as 99.47%.
Simple structure and convenient disassembly and assembly.
Good damping effect to avoid resonance.
♦Basic Parameter and Main Dimension
| Type | Norminal Torque Nm |
Permit Speed r/min |
Hole d1,d2 | D | BE | A | F | L | Clearance K | Grease Kg |
Without bore Weight Kg |
||
| max | min | min | max | ||||||||||
| JS3501 | 45 | 3600 | 28 | 14 | 98 | 45 | 100 | 40 | 40 | 52 | 3 | 0.03 | 2.9 |
| JS3502 | 125 | 3600 | 35 | 14 | 110 | 45 | 110 | 50 | 40 | 52 | 3 | 0.03 | 3.9 |
| JS3503 | 224 | 3600 | 42 | 14 | 120 | 45 | 110 | 55 | 41 | 52 | 3 | 0.06 | 5.9 |
| JS3504 | 400 | 3600 | 48 | 14 | 138 | 55 | 110 | 65 | 45 | 62 | 3 | 0.06 | 9 |
| JS3505 | 630 | 3600 | 55 | 19 | 155 | 65 | 165 | 75 | 52 | 62 | 3 | 0.09 | 13.5 |
| JS3506 | 900 | 3600 | 65 | 19 | 170 | 65 | 165 | 90 | 55 | 62 | 3 | 0.09 | 17.5 |
| JS3507 | 1800 | 3500 | 75 | 28 | 195 | 95 | 205 | 105 | 66 | 112 | 4 | 0.17 | 28.5 |
| JS3508 | 3150 | 3500 | 85 | 28 | 212 | 95 | 205 | 125 | 70 | 112 | 4 | 0.26 | 42.5 |
| JS3509 | 5600 | 2450 | 100 | 42 | 248 | 105 | 205 | 140 | 142 | 6 | 0.43 | 70.5 | |
| JS3510 | 8000 | 2300 | 110 | 42 | 274 | 105 | 205 | 160 | 142 | 6 | 0.51 | 95 | |
| JS3511 | 12500 | 2000 | 125 | 60 | 324 | 125 | 205 | 180 | 142 | 6 | 0.74 | 138 | |
| JS3512 | 18000 | 1800 | 150 | 70 | 368 | 130 | 205 | 220 | 172 | 6 | 0.91 | 187 | |
| JS3513 | 25000 | 1600 | 180 | 70 | 400 | 135 | 205 | 255 | 172 | 6 | 1.14 | 257 | |
| JS3514 | 35500 | 1500 | 200 | 110 | 458 | 175 | 190 | 270 | 212 | 6 | 1.9 | 340 | |
| JS3515 | 50000 | 1300 | 220 | 120 | 500 | 180 | 205 | 305 | 212 | 6 | 2.8 | 430 | |
| JS3516 | 63000 | 1200 | 250 | 130 | 565 | 195 | 225 | 360 | 252 | 6 | 3.5 | 636 | |
| JS3517 | 90000 | 1100 | 275 | 610 | 200 | 250 | 395 | 252 | 6 | 3.7 | 852 | ||
| JS3518 | 125000 | 1000 | 305 | 675 | 210 | 270 | 440 | 302 | 6 | 4.4 | 1118 | ||
| JS3519 | 180000 | 900 | 330 | 755 | 225 | 290 | 500 | 302 | 6 | 5.6 | 1445 | ||
Note: d1 is specified as the molecule(active end dimension) in the marking example, please specify otherwise if the user has special requirements.
♦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 months under normal circumstance.
Q 6: What is the MOQ?
A: Usually our MOQ is 1 pcs.
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: T/T.
♦Contact Us
Web: huadingcoupling
Add: No.11 HangZhou Road,Chengnan park,HangZhou City,ZheJiang Province,China
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What are the Signs of Wear, Corrosion, or Damage in a Half Coupling?
A half coupling, like any other pipe fitting, can experience wear, corrosion, or damage over time due to various factors. Regular inspection is crucial to detect any issues early on and prevent potential leaks or failures in piping and plumbing systems. Here are some signs to look for to identify wear, corrosion, or damage in a half coupling:
- Visible Corrosion: Check for any signs of rust or corrosion on the surface of the half coupling. Corrosion can weaken the material and lead to leaks or structural failure. Surface discoloration, rough patches, or flaking of the metal are all indicators of possible corrosion.
- Thread Damage: For threaded half couplings, inspect the threads carefully. Look for signs of stripping, galling, or deformation. Damaged threads can compromise the integrity of the connection and may result in leaks.
- Cracks or Fractures: Examine the half coupling for any cracks, fractures, or signs of deformation. Cracks can lead to leaks and should be addressed immediately to prevent further damage.
- Worn Socket or Weld Seam: In the case of socket weld or butt weld half couplings, inspect the socket or weld seam for signs of wear or damage. A worn socket may not provide a secure fit for the smaller pipe, while defects in the weld can compromise the joint’s strength and integrity.
- Leaks: Any visible leaks or indications of moisture around the joint or coupling are clear signs of a problem. Leaks can be caused by damaged threads, corroded surfaces, or improper installation.
- Reduced Performance: If the system’s performance declines, such as a decrease in flow rate or pressure, it could be a sign of a partially obstructed or damaged coupling.
- Age and Service Life: Consider the age and service life of the half coupling. Over time, even well-maintained couplings may show signs of wear and fatigue, warranting closer inspection.
If any of these signs are observed, it is essential to take prompt action to address the issues. Depending on the severity of the wear, corrosion, or damage, the appropriate steps may include repairing or replacing the half coupling. In some cases, it may be necessary to inspect adjacent pipes and components for possible effects of the compromised coupling.
Regular maintenance and inspection practices can help identify signs of wear, corrosion, or damage in a half coupling before they escalate into more significant problems. Following manufacturer’s guidelines, adhering to industry standards, and using suitable materials for the application can contribute to the longevity and reliability of the half coupling and the entire piping or plumbing system.
Are there Industry Standards or Certifications for Half Couplings?
Yes, there are industry standards and certifications for half couplings to ensure their quality, performance, and safety. These standards are established by various organizations to provide guidelines for manufacturers, distributors, and users of half couplings. Compliance with these standards helps maintain consistency, reliability, and compatibility within the industry. Some of the prominent standards and certifications related to half couplings include:
- ASME B16.11: The American Society of Mechanical Engineers (ASME) sets the ASME B16.11 standard for forged fittings, including socket weld and threaded half couplings. This standard covers the requirements for materials, dimensions, ratings, testing, and marking of forged fittings used in high-pressure applications.
- ASTM A105 / ASTM A182: ASTM International establishes standards for materials used in various industries. ASTM A105 covers forged carbon steel piping components, including couplings, for ambient and higher-temperature service. ASTM A182 includes specifications for forged or rolled alloy-steel pipe flanges, forged fittings, and valves and is commonly referenced for high-temperature or corrosive applications involving half couplings made from alloy steels.
- API 5CT / API 5L: The American Petroleum Institute (API) develops standards for the oil and gas industry. API 5CT specifies requirements for casing and tubing, and API 5L covers seamless and welded steel line pipe. In oil and gas applications, half couplings used for connecting casing and tubing components are expected to meet the API standards.
- ISO 9001: The International Organization for Standardization (ISO) sets the ISO 9001 standard for quality management systems. Manufacturers of half couplings can obtain ISO 9001 certification to demonstrate their commitment to consistent quality and continuous improvement in their processes and products.
- UL Listing: Underwriters Laboratories (UL) offers product testing and certification services. Half couplings used in fire protection systems or other safety-critical applications may undergo testing and receive UL listing to ensure compliance with fire safety and performance standards.
- Pressure Equipment Directive (PED): In the European Union, the Pressure Equipment Directive sets requirements for the design, manufacture, and conformity assessment of pressure equipment, including half couplings used in pressurized systems. Compliance with PED is mandatory for certain pressure equipment intended for use in the EU market.
It is essential for users and buyers of half couplings to verify that the products they purchase meet the relevant industry standards and certifications. Ensuring compliance with these standards helps assure the performance, safety, and reliability of half couplings in various applications and industries.
Can a Half Coupling be Used to Join Pipes of Different Diameters?
Yes, a half coupling can be used to join pipes of different diameters in piping and plumbing systems. Half couplings are specifically designed to connect two pipes of different sizes, making them ideal for creating transitions or connections between pipes with varying diameters. The larger end of the half coupling is welded or screwed onto the larger diameter pipe, providing a stable base for the connection. The smaller pipe, which has a different diameter, is then threaded or inserted into the smaller end of the half coupling.
The ability to join pipes of different diameters is one of the main advantages of using half couplings. This feature allows for efficient and smooth transitions between pipe sizes, which is crucial in maintaining proper fluid flow, reducing pressure losses, and preventing turbulence within the system.
Here are some common scenarios where half couplings are used to join pipes of different diameters:
- Reducing Pipe Size: When a pipeline needs to change from a larger diameter to a smaller diameter, a half coupling can be employed to create a smooth transition. For example, if a process requires a reduction in flow rate, a smaller pipe can be connected to the main pipeline using a half coupling.
- Connecting Equipment or Valves: In many industrial applications, equipment, valves, or instruments are connected to the main pipeline using half couplings. Often, these components have different pipe sizes than the main pipeline, and a half coupling provides a secure and leak-proof joint.
- Repair and Maintenance: During repair or maintenance operations, a damaged section of the pipeline can be cut out, and a new pipe of a different diameter can be connected using a half coupling. This allows for quick repairs without having to replace the entire pipeline.
When using a half coupling to join pipes of different diameters, it is essential to ensure that the threads and dimensions of the coupling match the pipes being connected. Proper sealing techniques, such as using thread sealant or Teflon tape, should also be applied to prevent leaks and ensure a reliable connection.
In conclusion, half couplings are versatile pipe fittings that enable the joining of pipes with different diameters. Their ability to facilitate smooth transitions and secure connections makes them invaluable in various industrial, commercial, and residential applications.
editor by CX 2024-01-12