China factory Customized High Precision Shaft Coupling Flexible Double Disc Coupling for Vacuum Pumps

Product Description

            Customized High Precision Shaft Coupling Flexible Double Disc Coupling for Vacuum Pumps
 

Product Description

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. 

Our leading mainly including universal couplings, drum gear couplings, elastic couplings etc.
Main production equipments:
Large lathe, surface grinder, milling machine, 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, 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.

Product Parameters

Quality control

Dynamic balance tester, high-speed intelligent carbon and sulfur analyzer, Blochon optical hardness tester, Leeb hardness tester, magnetic yoke flaw detector etc.

Application

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.

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.
               Q: Why choose Shengao product?
               A: We have our own factory, therefore, we can surely promise the quality of product and provide 
                   you competitive price.

               Q: Do you provide OEM Service?
               A: Yes, we provide OEM Service.

               Q: Do you provide customized machining parts?
               A: Yes. Customers give us drawings and specifications, and we will produce accordingly.

               Q: What is your payment term?
               A: We provide kinds of payment terms such as L/C, T/T, Paypal, Escrow, etc.

If there’s anything we can help, please feel free to contact us.

Comparison of Disc Couplings with Other Coupling Types

When comparing disc couplings with other coupling types like jaw couplings and elastomeric couplings, several factors come into play:

• Flexibility: Disc couplings offer high flexibility and misalignment compensation, similar to elastomeric couplings, making them suitable for applications with angular, axial, and parallel misalignment.
• Torsional Stiffness: Jaw couplings are known for their high torsional stiffness, which is suitable for precision applications. Disc couplings offer a balance between flexibility and stiffness.
• Misalignment Compensation: Disc couplings excel in accommodating misalignment, whereas elastomeric couplings and jaw couplings are better suited for lower degrees of misalignment.
• Vibration Damping: Elastomeric couplings provide excellent vibration damping due to their rubber elements. Disc couplings can also dampen vibrations to some extent.
• Compactness: Jaw couplings and elastomeric couplings are relatively compact, making them suitable for space-constrained applications. Disc couplings are larger in size but offer higher torque capacity.
• Torque Capacity: Disc couplings generally have higher torque capacity compared to elastomeric couplings and jaw couplings.
• Installation and Maintenance: Disc couplings and elastomeric couplings are typically easier to install and require less maintenance compared to jaw couplings.
• Material Options: All three coupling types are available in various materials, allowing for compatibility with different environments.

The choice between disc couplings, jaw couplings, and elastomeric couplings depends on the specific requirements of the application, including torque, misalignment, vibration, and stiffness considerations. Each coupling type has its strengths, and selecting the right one involves evaluating these factors to achieve optimal performance and reliability.

Diagnosing and Troubleshooting Issues with Disc Couplings

Proper diagnosis and troubleshooting are essential to maintain the optimal performance of disc couplings within machinery systems. Here’s a step-by-step guide:

1. Visual Inspection: Regularly inspect the disc coupling for signs of wear, damage, or misalignment. Look for disc fractures, corrosion, or unusual wear patterns.
2. Noise and Vibration Analysis: Abnormal noise or excessive vibration could indicate misalignment, wear, or imbalance. Use vibration analysis tools to identify the source and severity of the issue.
3. Torque and Load Monitoring: Monitor torque and load variations to detect abnormal fluctuations. Sudden changes could indicate issues with the coupling or connected components.
4. Alignment Check: Verify that the coupling and shafts are properly aligned. Misalignment can lead to premature wear and reduced coupling performance.
5. Temperature Analysis: Monitor the operating temperature of the coupling. Excessive heat can result from friction due to misalignment or insufficient lubrication.
6. Lubrication Inspection: Ensure proper lubrication between the disc elements and hubs. Inadequate lubrication can lead to increased wear and reduced flexibility.
7. Dynamic Testing: Perform dynamic tests to evaluate the coupling’s response to torque fluctuations and misalignment. Analyze the results for anomalies.
8. Replacement of Worn Parts: If wear or damage is detected, replace worn disc elements, hubs, or other components as needed.
9. Rebalancing: If vibration is an issue, consider rebalancing the connected components to reduce vibration and enhance overall system stability.

Regular monitoring and a proactive approach to addressing issues can help prevent costly downtime and ensure the longevity of the disc coupling and the machinery system as a whole.

Function of Disc Couplings in Torque Transmission and Misalignment Compensation

Disc couplings are designed to transmit torque between two shafts while accommodating various forms of misalignment. The primary components of a disc coupling include two hubs and a flexible disc element made of a resilient material such as stainless steel. Here’s how a disc coupling works to transmit torque and handle misalignment:

• Torque Transmission: When torque is applied to one hub of the disc coupling, it induces angular displacement in the flexible disc. The flexible disc element bends slightly, allowing the torque to be transmitted from one hub to the other. This bending action of the disc results in an elastic deformation, which helps maintain the torque transfer.
• Angular Misalignment Compensation: Disc couplings can accommodate angular misalignment between the two connected shafts. As the hubs are misaligned angularly, the flexible disc element compensates by bending at an angle. The disc’s flexibility and the elastic properties of the material allow it to absorb and accommodate the angular misalignment without transmitting excessive forces to the connected machinery.
• Parallel Misalignment Compensation: In cases of parallel misalignment, where the axes of the two shafts are not perfectly aligned, the disc coupling can also absorb a certain degree of parallel offset. The flexibility of the disc allows for slight axial movement, ensuring that the hubs remain connected even when there’s a minor parallel misalignment.
• Torsional Stiffness: While disc couplings are designed to accommodate misalignment, they also exhibit torsional stiffness. This means that under normal operating conditions, the disc coupling remains rigid enough to efficiently transmit torque between the shafts, minimizing torsional deflection and maintaining the integrity of torque transfer.

The design and material properties of the flexible disc element play a crucial role in determining the coupling’s ability to handle misalignment while transmitting torque effectively. Disc couplings are widely used in various industrial applications where torque transmission and misalignment compensation are critical requirements.

editor by CX 2023-11-16