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
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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
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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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Industry Standards and Certifications for Rigid Shaft Couplings
Yes, there are industry standards and certifications that apply to rigid shaft couplings to ensure their quality, performance, and safety. Some of the common standards and certifications include:
- ISO 14691: This International Organization for Standardization (ISO) standard specifies the requirements and dimensions for metallic straight-toothed rigid couplings with external clamping for shaft connections.
- ANSI/AGMA 9002-C16: The American Gear Manufacturers Association (AGMA) standard covers measurement methods for evaluating the torsional stiffness of rigid couplings.
- API 671: This American Petroleum Institute (API) standard applies to special-purpose couplings used in petroleum, chemical, and gas industry services, ensuring reliable operation and safety.
- DNV GL: Rigid couplings used in marine and offshore applications may require certification from DNV GL, an international accredited registrar and classification society.
- ATEX: For couplings used in explosive atmospheres, compliance with the ATEX directive is crucial to ensure that the coupling does not become a source of ignition.
When selecting a rigid shaft coupling, it is essential to look for products that comply with these relevant industry standards and certifications. Meeting these standards guarantees that the couplings have undergone rigorous testing and adhere to recognized quality and safety guidelines.
How do rigid shaft couplings contribute to the overall efficiency of rotating machinery?
Rigid shaft couplings play a crucial role in enhancing the overall efficiency and performance of rotating machinery by ensuring precise torque transmission, accurate shaft alignment, and reduced power losses. Their contribution to efficiency can be understood through the following points:
- Accurate Torque Transmission: Rigid couplings provide a direct and efficient connection between two shafts, allowing torque to be transmitted without significant losses. Unlike flexible couplings that can absorb some energy through flexibility, rigid couplings minimize energy dissipation, leading to efficient power transfer.
- Minimized Misalignment: Proper alignment of shafts is essential for efficient operation. Rigid couplings maintain accurate shaft alignment, reducing friction, wear, and energy losses that can occur due to misaligned shafts.
- Reduced Vibrations: By preventing misalignment and maintaining shaft stability, rigid couplings help minimize vibrations. Reduced vibrations lead to smoother operation, less wear and tear, and a decrease in energy losses associated with friction and oscillations.
- Consistent Performance: Rigid couplings ensure consistent and reliable torque transmission throughout the machinery’s operation. This stability helps maintain optimal operating conditions and prevents sudden disruptions or fluctuations in performance.
- Enhanced System Integrity: A stable and secure connection between shafts provided by rigid couplings reduces the risk of equipment failures and breakdowns. This enhances the machinery’s overall reliability and uptime, contributing to improved efficiency.
- Minimized Power Losses: With their rigid construction, these couplings have minimal flexibility, reducing power losses associated with elastic deformation. As a result, more of the input power is effectively utilized for productive work.
- Reduced Maintenance Needs: Rigid couplings, when properly installed and maintained, experience fewer wear-related issues compared to flexible couplings. This translates to reduced downtime and maintenance requirements, further enhancing machinery efficiency.
Efficient rotating machinery is critical for various industries, as it leads to cost savings, improved productivity, and extended equipment lifespan. Rigid shaft couplings contribute significantly to achieving these goals by ensuring reliable torque transmission, stable operation, and minimized energy losses.
It’s important to note that while rigid couplings offer advantages in terms of efficiency, they might not be suitable for applications requiring flexibility to accommodate misalignment or shock absorption. Engineers should carefully consider the specific requirements of their machinery and select couplings that best align with the desired balance of efficiency, flexibility, and other operational needs.
Are There Different Types of Rigid Shaft Couplings Available, and What Are Their Specific Applications?
Yes, there are different types of rigid shaft couplings available, each with its own specific applications. Some common types of rigid shaft couplings include:
- Sleeve Couplings: Sleeve couplings are simple and cost-effective couplings that connect two shafts together using a solid sleeve or tube. They are commonly used in applications with moderate torque requirements and where shaft alignment can be maintained with high precision.
- Clamp or Split Couplings: Clamp or split couplings consist of two halves that are clamped together around the shafts using screws or bolts. They are easy to install and suitable for applications where frequent maintenance or disassembly is required.
- Flanged Couplings: Flanged couplings have flanges on both ends that are bolted together. They are used in applications where shafts need to be rigidly connected and where some degree of axial movement is expected.
- Tapered Shaft Couplings: Tapered shaft couplings have tapered bores that fit tightly onto tapered shafts, creating a friction-based connection. They are often used in applications where precise alignment and torque transmission are essential.
- Keyed Shaft Couplings: Keyed shaft couplings use a key and keyway arrangement to connect the shafts securely. They are commonly used in heavy-duty applications where high torque transmission is required.
The choice of rigid shaft coupling depends on the specific requirements of the application. Factors such as torque transmission, shaft size, alignment precision, ease of installation, and maintenance needs play a crucial role in selecting the appropriate coupling type.
Rigid shaft couplings are widely used in various industries, including manufacturing, power generation, robotics, aerospace, and automotive. They are often employed in applications such as pumps, compressors, conveyors, and high-precision machinery.
It is essential to consider the specific demands of the application and consult with coupling manufacturers or experts to determine the most suitable rigid coupling type for optimal performance and reliability.
editor by CX 2024-04-23