Product Description

Densen customized Metal Bellows Clamp Type Spring flexible shaft Coupling for Step Motor

Product Name Metal Bellows Clamp Type Spring flexible shaft Coupling for Step Motor
DN mm 12~160mm
Rated Torque 25~25000 N·m
Allowable speed 15300~1500 N·m
Material 35CrMo/ZG270/45# steel/Aluminum alloy
Application Widely used in metallurgy, mining, engineering and other fields.

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Equipment

 

Application Case

Typical case of diaphragm coupling applied to variable frequency speed control equipment

JMB type coupling is applied to HangZhou Oilfield Thermal Power Plant

According to the requirements of HangZhou Electric Power Corporation, HangZhou Oilfield Thermal Power Plant should dynamically adjust the power generation according to the load of the power grid and market demand, and carry out the transformation of the frequency converter and the suction fan. The motor was originally a 1600KW, 730RPM non-frequency variable speed motor matched by HangZhou Motor Factory. The speed control mode after changing the frequency is manual control. Press the button speed to increase 10RPM or drop 10RPM. The coupling is still the original elastic decoupling coupling, and the elastic de-coupling coupling after frequency conversion is frequently damaged, which directly affects the normal power generation.

It is found through analysis that in the process of frequency conversion speed regulation, the pin of the coupling can not bear the inertia of the speed regulation process (the diameter of the fan impeller is 3.3 meters) and is cut off, which has great damage to the motor and the fan.

Later, they switched to the JMB460 double-diaphragm wheel-type coupling of our factory (patent number: ZL.99246247.9). After 1 hour of destructive experiment and more than 1 year of operation test, the equipment is running very well, and there is no Replace the diaphragm. 12 units have been rebuilt and the operation is in good condition.

 

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clamp coupling

Are There Any Maintenance Requirements for Clamp Couplings to Ensure Their Longevity?

Yes, like any mechanical component, clamp couplings require regular maintenance to ensure their longevity and optimal performance. Proper maintenance can help prevent premature wear, reduce the risk of failure, and extend the service life of the coupling. Here are some essential maintenance practices for clamp couplings:

  • Regular Inspection: Perform visual inspections of the clamp coupling regularly to check for signs of wear, damage, or misalignment. Look for cracks, corrosion, or any deformation in the coupling components.
  • Lubrication: Some clamp couplings may require periodic lubrication to reduce friction between moving parts. Check the manufacturer’s guidelines for the appropriate lubrication schedule and use the recommended lubricant.
  • Bolt Tightening: Ensure that all the bolts and screws securing the clamp coupling are properly tightened according to the manufacturer’s specifications. Loose bolts can lead to misalignment and coupling failure.
  • Alignment: Regularly check the alignment of the connected shafts. Misalignment can cause excessive stress on the coupling and lead to premature wear. If misalignment is detected, it should be corrected promptly.
  • Environmental Protection: If the clamp coupling is used in harsh environments, take measures to protect it from dust, debris, and corrosive substances. Use suitable covers or guards to shield the coupling from external contaminants.
  • Load Monitoring: Be aware of the operating conditions and load requirements of the machinery. Excessive loads or shock loads can impact the performance of the coupling. Avoid exceeding the coupling’s specified torque and speed limits.
  • Regular Replacement: Even with proper maintenance, clamp couplings have a finite service life. It is essential to follow the manufacturer’s recommendations for replacing the coupling at the end of its expected lifespan or if any significant wear or damage is detected.

By following these maintenance practices, operators can ensure that the clamp couplings remain in good condition and continue to function reliably. Regular maintenance not only extends the coupling’s lifespan but also enhances the safety and efficiency of the entire mechanical system. Always refer to the manufacturer’s guidelines and instructions for the specific maintenance requirements of the clamp coupling model used in the application.

clamp coupling

Clamp Couplings and Damping Vibrations/Noise

Yes, clamp couplings can help dampen vibrations and reduce noise in mechanical systems to some extent. While not specifically designed as vibration isolators, clamp couplings can mitigate vibrations and noise due to their unique design and material properties.

The design of clamp couplings involves a split hub with screws that securely fasten around the shafts. This design offers several benefits:

  1. Damping Effect: The material of the coupling can absorb and dampen some of the vibrations generated by rotating equipment. Elastomeric elements or flexible materials used in some clamp couplings can help attenuate vibrations.
  2. Reduction of Resonance: Vibrations in rotating machinery can sometimes lead to resonance, causing excessive oscillations. Clamp couplings can help break the resonance cycle and prevent amplification of vibrations.
  3. Torsional Compliance: Some clamp couplings exhibit a degree of torsional compliance, which means they can tolerate small angular misalignments and dampen torsional vibrations.
  4. Transmissible Torque Variation: In some cases, clamp couplings can absorb torque spikes or variations, reducing the impact of sudden changes in load.

While clamp couplings can provide some level of vibration and noise reduction, their primary function is to transmit torque and accommodate misalignment between shafts. For more demanding vibration isolation or noise reduction applications, specialized components such as flexible couplings with damping features or dedicated vibration isolation mounts may be more suitable.

It is essential to consider the specific requirements of the mechanical system and consult with experts to determine the most appropriate coupling or isolator for achieving the desired level of vibration and noise reduction.

clamp coupling

Different Types of Clamp Couplings

Clamp couplings come in various designs to accommodate different shaft sizes, torque levels, and application requirements. Some common types of clamp couplings available in the market include:

  1. Two-Piece Clamp Couplings: This type of coupling consists of two separate hubs that are connected by a clamp. The clamp is tightened to secure the two hubs onto the shafts, creating a rigid connection. Two-piece clamp couplings are easy to install and suitable for applications with moderate torque and misalignment.
  2. One-Piece Clamp Couplings: As the name suggests, one-piece clamp couplings have a single-piece construction, which simplifies the installation process. They provide a compact and lightweight solution for low to medium torque applications.
  3. Double-Walled Clamp Couplings: These couplings have a unique double-walled design, providing better torque transmission capabilities and torsional rigidity. They are ideal for applications with high torque and precise positioning requirements.
  4. Set Screw Clamp Couplings: Set screw clamp couplings use set screws to secure the coupling onto the shaft. While they are simple and cost-effective, they may not handle high torque and misalignment as effectively as other types.
  5. Wedge Clamp Couplings: Wedge clamp couplings use a wedge-shaped collar to create a tight grip on the shaft. They offer excellent torque transmission and axial holding power, making them suitable for heavy-duty applications.
  6. Keyless Clamp Couplings: Keyless clamp couplings eliminate the need for keyways and key connection. Instead, they use compression to secure the coupling to the shaft, providing high torque capacity and easy installation.
  7. Hydraulic Clamp Couplings: Hydraulic clamp couplings use hydraulic pressure to tighten the clamp, ensuring uniform pressure distribution and secure shaft connections. They are commonly used in high-power and critical applications.
  8. Clamp Couplings with Tapered Bushings: These couplings feature tapered bushings that provide a tight fit on the shaft and enhance torque transmission capabilities. They are suitable for heavy-duty applications and high misalignment conditions.

The selection of the appropriate clamp coupling depends on the specific requirements of the mechanical system, such as torque levels, shaft sizes, misalignment allowances, and operating conditions. Consulting with coupling manufacturers or engineering experts can help in choosing the right type of clamp coupling for a particular application.

China factory CHINAMFG Customized Metal Bellows Clamp Type Spring Flexible Shaft Coupling  China factory CHINAMFG Customized Metal Bellows Clamp Type Spring Flexible Shaft Coupling
editor by CX 2024-04-25