Product Description

Stainless Steel Coupling Gear Rigid Roller Chain Fluid Tyre Grid Jaw Spider HRC Nm Motor Flange Gear Pump Rubber Spline Shaft Flexible Universal Joint Coupling

Product Description

Main products
Coupling refers to a device that connects 2 shafts or shafts and rotating parts, rotates together during the transmission of motion and power, and does not disengage under normal conditions. Sometimes it is also used as a safety device to prevent the connected parts from bearing excessive load, which plays the role of overload protection.

Couplings can be divided into rigid couplings and flexible couplings.
Rigid couplings do not have buffering property and the ability to compensate the relative displacement of 2 axes. It is required that the 2 axes be strictly aligned. However, such couplings are simple in structure, low in manufacturing cost, convenient in assembly and disassembly, and maintenance, which can ensure that the 2 axes are relatively neutral, have large transmission torque, and are widely used. Commonly used are flange coupling, sleeve coupling and jacket coupling.
Flexible coupling can also be divided into flexible coupling without elastic element and flexible coupling with elastic element. The former type only has the ability to compensate the relative displacement of 2 axes, but cannot cushion and reduce vibration. Common types include slider coupling, gear coupling, universal coupling and chain coupling; The latter type contains elastic elements. In addition to the ability to compensate the relative displacement of 2 axes, it also has the functions of buffering and vibration reduction. However, due to the strength of elastic elements, the transmitted torque is generally inferior to that of flexible couplings without elastic elements. Common types include elastic sleeve pin couplings, elastic pin couplings, quincunx couplings, tire type couplings, serpentine spring couplings, spring couplings, etc

Coupling performance

1) Mobility. The movability of the coupling refers to the ability to compensate the relative displacement of 2 rotating components. Factors such as manufacturing and installation errors between connected components, temperature changes during operation and deformation under load all put CHINAMFG requirements for mobility. The movable performance compensates or alleviates the additional load between shafts, bearings, couplings and other components caused by the relative displacement between rotating components.
(2) Buffering. For the occasions where the load is often started or the working load changes, the coupling shall be equipped with elastic elements that play the role of cushioning and vibration reduction to protect the prime mover and the working machine from little or no damage.
(3) Safe, reliable, with sufficient strength and service life.
(4) Simple structure, easy to assemble, disassemble and maintain.

How to select the appropriate coupling type

The following items should be considered when selecting the coupling type.
1. The size and nature of the required transmission torque, the requirements for buffering and damping functions, and whether resonance may occur.
2. The relative displacement of the axes of the 2 shafts is caused by manufacturing and assembly errors, shaft load and thermal expansion deformation, and relative movement between components.
3. Permissible overall dimensions and installation methods, and necessary operating space for assembly, adjustment and maintenance. For large couplings, they should be able to be disassembled without axial movement of the shaft.
In addition, the working environment, service life, lubrication, sealing, economy and other conditions should also be considered, and a suitable coupling type should be selected by referring to the characteristics of various couplings.

If you cannot determine the type, you can contact our professional engineer

Related products

Company Profile

Our Equipments

Main production equipment:
Large lathe, surface grinder, milling machine, gear shaper, spline milling machine, horizontal broaching machine, gear hobbing machine, shaper, slotting machine, bench drilling machine, radial drilling machine, boring machine, band sawing machine, horizontal lathe, end milling machine, crankshaft grinder, CNC milling machine, casting equipment, etc.
Inspection equipment:
Dynamic balance tester, high-speed intelligent carbon and sulfur analyzer, Blochon optical hardness tester, Leeb hardness tester, magnetic yoke flaw detector, special detection, modular fixture (self-made), etc.

Machining equipments
Heat equipment

Our Factory
Application – Photos from our partner customers

Company Profile
Our leading products are mechanical transmission basic parts – couplings, mainly including universal couplings, drum gear couplings, elastic couplings and other 3 categories of more than 30 series of varieties. It is widely used in metallurgical steel rolling, wind power, hydropower, mining, engineering machinery, petrochemical, lifting, paper making, rubber, rail transit, shipbuilding and marine engineering and other industries.
Our factory takes the basic parts of national standards as the benchmark, has more than 40 years of coupling production experience, takes “scientific management, pioneering and innovation, ensuring quality and customer satisfaction” as the quality policy, and aims to continuously provide users with satisfactory products and services. The production is guided by reasonable process, and the ISO9001:2015 quality management system standard is strictly implemented. We adhere to the principle of continuous improvement and innovation of coupling products. In recent years, it has successfully developed 10 national patent products such as SWF cross shaft universal coupling, among which the double cross shaft universal joint has won the national invention patent, SWF cross shaft universal coupling has won the new product award of China’s general mechanical parts coupling industry and the ZHangZhoug Province new product science and technology project.
Our factory has strong technical force, excellent process equipment, complete professional production equipment, perfect detection means, excellent after-sales service, various products and complete specifications. At the same time, we can provide the design and manufacturing of special non-standard products according to the needs of users. Our products sell well at home and abroad, and are trusted by the majority of users. We sincerely welcome friends from all walks of life at home and abroad to visit and negotiate for common development.p

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What Industries Commonly Use Stainless Steel Couplings, and Why?

Stainless steel couplings are widely used in various industries due to their excellent properties and benefits. Some of the common industries where stainless steel couplings find significant usage include:

• Food and Beverage: Stainless steel couplings are prevalent in the food and beverage industry because of their high corrosion resistance and hygienic properties. They are suitable for applications where the coupling may come into contact with water, food products, or cleaning agents.
• Chemical Processing: In chemical processing plants, stainless steel couplings are preferred for their resistance to chemical corrosion. They can handle various chemicals and aggressive substances, making them suitable for pumps, mixers, and other equipment in the chemical industry.
• Pharmaceutical: The pharmaceutical industry requires equipment that meets strict hygiene standards. Stainless steel couplings are easy to clean, durable, and resist contamination, making them ideal for pharmaceutical manufacturing processes.
• Oil and Gas: In the oil and gas sector, stainless steel couplings are used in pipelines, compressors, and drilling equipment due to their ability to withstand harsh and corrosive environments, especially in offshore drilling operations.
• Marine: Stainless steel couplings are widely used in marine applications because of their resistance to saltwater corrosion. They are found in propulsion systems, winches, and other marine equipment.
• Aerospace: In the aerospace industry, where weight and reliability are crucial, stainless steel couplings are used in aircraft engines and other critical components to provide high-performance power transmission.
• Pulp and Paper: The pulp and paper industry requires equipment that can handle the moisture and chemical-laden environment of paper mills. Stainless steel couplings are corrosion-resistant and suitable for various applications in this industry.
• Power Generation: In power plants, stainless steel couplings are used in turbines, generators, and other equipment that require reliable power transmission and resistance to harsh operating conditions.
• Mining: The mining industry utilizes stainless steel couplings in conveyor systems, crushers, and other equipment that requires high durability and resistance to abrasive materials.

In summary, stainless steel couplings are chosen for their corrosion resistance, durability, and reliability. They offer the ability to withstand challenging environments and ensure smooth power transmission, making them a preferred choice in a wide range of industries.

Differences Between Stainless Steel Couplings and Aluminum or Carbon Steel Couplings

Stainless steel couplings, aluminum couplings, and carbon steel couplings are commonly used in various industrial applications, but they differ in their material properties, performance characteristics, and suitability for specific environments. Here are the key differences between these types of couplings:

1. Material Composition:

– Stainless Steel Couplings: Stainless steel couplings are made from alloyed steel containing a minimum of 10.5% chromium. This chromium content creates a passive oxide layer that provides excellent corrosion resistance.

– Aluminum Couplings: Aluminum couplings are made from aluminum, a lightweight metal known for its high strength-to-weight ratio. Aluminum offers good corrosion resistance but is not as resistant as stainless steel.

– Carbon Steel Couplings: Carbon steel couplings are made from plain carbon steel, which has a higher carbon content. While carbon steel offers good strength and toughness, it is more susceptible to corrosion than stainless steel or aluminum.

2. Corrosion Resistance:

– Stainless Steel Couplings: Stainless steel couplings offer the highest level of corrosion resistance among the three materials. They are well-suited for use in corrosive environments, such as marine applications or food processing, where protection against rust and chemical exposure is essential.

– Aluminum Couplings: Aluminum couplings provide moderate corrosion resistance, but they are not recommended for highly corrosive environments or applications with exposure to acidic or alkaline substances.

– Carbon Steel Couplings: Carbon steel couplings have the lowest corrosion resistance of the three materials and may require additional coatings or treatments to protect against rust and corrosion.

3. Strength and Durability:

– Stainless Steel Couplings: Stainless steel couplings offer excellent strength and durability, making them suitable for heavy-duty applications and environments with high mechanical loads.

– Aluminum Couplings: Aluminum couplings are lightweight and have good strength but may not be as durable as stainless steel or carbon steel couplings.

– Carbon Steel Couplings: Carbon steel couplings provide good strength and toughness, but they may not be as durable as stainless steel couplings in corrosive environments.

4. Weight:

– Stainless Steel Couplings: Stainless steel couplings are heavier than aluminum couplings but comparable to or slightly lighter than carbon steel couplings.

– Aluminum Couplings: Aluminum couplings are the lightest among the three materials, making them suitable for applications where weight reduction is a priority.

– Carbon Steel Couplings: Carbon steel couplings are heavier than aluminum couplings but offer higher strength and load-bearing capacity.

5. Temperature Tolerance:

– Stainless Steel Couplings: Stainless steel couplings can withstand a wide range of temperatures, making them suitable for both high-temperature and cryogenic applications.

– Aluminum Couplings: Aluminum couplings have good thermal conductivity but may not be suitable for extremely high-temperature applications.

– Carbon Steel Couplings: Carbon steel couplings have good temperature tolerance but may be limited in extremely high-temperature or cryogenic environments.

The choice of coupling material depends on the specific requirements of the application, such as the operating environment, load capacity, and corrosion resistance needed. Stainless steel couplings are often preferred for applications where corrosion resistance and durability are paramount, while aluminum couplings are chosen for their lightweight properties. Carbon steel couplings find use in applications requiring good strength and moderate corrosion resistance.

Industry Standards and Certifications for Stainless Steel Couplings

Yes, there are industry standards and certifications that govern the manufacturing and performance of stainless steel couplings. These standards ensure that the couplings meet specific quality and safety requirements for various applications.

Some of the common industry standards and certifications for stainless steel couplings include:

• American National Standards Institute (ANSI): ANSI sets standards for various industrial components, including couplings. ANSI standards ensure the couplings’ dimensional accuracy, material quality, and performance characteristics.
• International Organization for Standardization (ISO): ISO provides globally recognized standards for couplings, among other products. ISO standards cover areas like coupling design, materials, and manufacturing processes.
• American Society for Testing and Materials (ASTM): ASTM standards define the material properties and testing procedures for stainless steel couplings, ensuring their durability and reliability.
• European Committee for Standardization (CEN): CEN develops European standards for couplings, adhering to the European Union’s regulations for quality and safety.
• Underwriters Laboratories (UL): UL is a certification organization that tests and certifies couplings for compliance with safety and performance standards. UL-listed couplings have undergone rigorous testing and evaluation.

When selecting stainless steel couplings, it is essential to ensure that they comply with relevant industry standards and carry appropriate certifications. These standards and certifications provide assurance of the coupling’s quality, performance, and safety, making them suitable for specific applications.

editor by CX 2024-02-20