Product Description
Densen Customized Spider Jaw Coupling, Jaw Shaft Coupling, Precision Jaw Shaft Coupling
| Product Name | Densen customized spider jaw coupling,jaw shaft coupling,precision jaw shaft coupling |
| DN mm | 12~160mm |
| Axis Angle | 1°00/1°30 |
| Rated Torque | 25~250000 N·m |
| Allowable speed | 5000~350N·m |
| Material | 35CrMo/HT200/ZG270 |
| Application | Widely used in metallurgy, mining, engineering and other fields. |
Products show
Features:
1,Double-diaphragm and small axial opposite wheel type coupling is the patent product developed by our factory,the patent No. ZL.99 2 46247.9
2,With compact strcture, the adjustment capacity,anti-inpact and vibration-absorbing etc properties will be higher by 35%-40% than those of single diaphragm opposite wheel type.
3,Under unexpected diaphragm breakage conditions, the plum CHINAMFG shape flange can still transfer the torque ,the safety property is good .
Company Information
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.
Other Application Case
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What materials are typically used in manufacturing spider couplings and why?
Spider couplings are constructed using a combination of materials to achieve durability, flexibility, and efficient torque transmission. The choice of materials depends on factors such as application requirements, environmental conditions, and the desired balance between strength and flexibility. Common materials used in manufacturing spider couplings include:
- Aluminum: Aluminum is lightweight and corrosion-resistant, making it suitable for applications where weight reduction is important. It offers good mechanical properties and can be used in various industries.
- Steel: Steel provides excellent strength and durability. It’s often used in heavy-duty applications where high torque transmission is required. Surface treatments can enhance corrosion resistance.
- Stainless Steel: Stainless steel offers corrosion resistance in aggressive environments. It’s commonly used in industries such as food processing, pharmaceuticals, and chemical processing.
- Cast Iron: Cast iron is known for its high compressive strength and wear resistance. It’s suitable for applications requiring robust construction and can handle high torque loads.
- Plastic/Polymer: Certain polymers and plastics, such as polyurethane or nylon, are used for the elastomeric spider element. These materials provide flexibility, vibration dampening, and misalignment compensation.
The choice of materials depends on the specific requirements of the application. For example, aluminum or stainless steel may be chosen for industries requiring corrosion resistance, while steel or cast iron may be selected for heavy-duty applications. The elastomeric spider is typically made from a durable polymer to ensure flexibility and effective torque transmission while accommodating misalignment. Overall, selecting the right materials ensures that spider couplings can withstand the demands of the intended application and provide reliable performance over their lifespan.
How do you diagnose and troubleshoot issues related to spider couplings in machinery systems?
Diagnosing and troubleshooting issues with spider couplings requires a systematic approach to identify the root cause of the problem and implement effective solutions. Here are the steps to diagnose and troubleshoot spider coupling-related issues:
- Visual Inspection: Conduct a thorough visual inspection of the coupling, looking for visible signs of wear, damage, or misalignment. Check for cracks, tears, and irregularities in the elastomeric spider.
- Vibration Analysis: Use vibration analysis tools to assess vibration levels during operation. Elevated vibration can indicate issues such as misalignment, wear, or unbalanced loads.
- Performance Monitoring: Monitor the performance of connected machinery or equipment. If there’s a decrease in torque transmission, efficiency, or overall performance, it could be attributed to coupling problems.
- Alignment Check: Ensure proper alignment between shafts connected by the coupling. Misalignment can cause uneven load distribution and lead to coupling wear.
- Temperature Monitoring: Monitor the temperature of the coupling during operation. Abnormal temperature increases could point to excessive friction and wear.
- Inspect Fasteners: Check for loose or worn-out fasteners such as bolts, nuts, and screws that secure the coupling components. Loose fasteners can contribute to misalignment and coupling issues.
- Inspect Lubrication: Check the lubrication of the coupling components. Inadequate or degraded lubrication can lead to increased friction and wear.
- Consider Environmental Factors: Evaluate the operating environment for factors such as temperature variations, humidity, and exposure to chemicals. Environmental conditions can affect coupling performance.
- Review Maintenance Records: Review the maintenance history and records of the coupling and connected equipment. This can provide insights into past issues and potential causes.
Based on the diagnostic results, appropriate troubleshooting steps can be taken. These might include adjusting alignment, replacing damaged components, re-lubricating, or replacing the elastomeric spider. Regular maintenance and prompt troubleshooting are essential to ensure the reliable and efficient operation of machinery systems utilizing spider couplings.
How do you properly install and maintain a spider coupling in machinery?
Installation:
Proper installation of a spider coupling is essential to ensure its optimal performance and longevity. Here are the steps for installing a spider coupling:
- Ensure Safety: Before starting any installation, make sure the machinery is properly shut down and all energy sources are disconnected.
- Inspect Components: Check the hubs, elastomeric spider, and shafts for any damage or debris. Ensure that the components match the correct specifications.
- Align Shafts: Align the shafts to minimize initial misalignment before inserting the elastomeric spider.
- Insert Spider: Place the elastomeric spider into one of the hubs, ensuring that the lobes or fins are correctly aligned with the grooves in the hub.
- Align Second Hub: Carefully align the second hub with the first one, making sure the spider lobes fit into the grooves of both hubs.
- Press Hubs Together: Gently press the hubs together until they meet. Avoid using excessive force, as this could damage the elastomeric spider.
- Check Alignment: After installation, check the alignment of the shafts and the coupling. Misalignment should not exceed the manufacturer’s recommended limits.
- Tighten Fasteners: Tighten the fasteners on the hubs according to the manufacturer’s torque specifications. Use a torque wrench to ensure proper tightening.
- Verify Clearance: Check for proper clearance between the coupling and surrounding components to prevent interference during operation.
- Run System: Start the machinery and monitor the coupling for any unusual vibrations or noise. Make any necessary adjustments if issues are detected.
Maintenance:
Maintaining a spider coupling is important to ensure its continued performance and prevent premature failure. Here are some maintenance tips:
- Regular Inspection: Periodically inspect the spider coupling for signs of wear, damage, or deterioration. Look for cracks, tears, or other abnormalities in the elastomeric spider.
- Clean Environment: Keep the coupling and surrounding area clean from dirt, debris, and contaminants that could impact its performance.
- Lubrication: Spider couplings are self-lubricating due to the elastomeric material. Avoid using additional lubricants, as they can deteriorate the elastomeric properties.
- Temperature Consideration: Be aware of the temperature range specified by the manufacturer for the elastomeric material. Extreme temperatures can affect the performance and lifespan of the coupling.
- Replace Worn Parts: If the elastomeric spider shows signs of wear, replace it with a new one from the manufacturer. Do not continue using a worn or damaged spider.
- Monitor Vibrations: Regularly monitor the machinery for unusual vibrations or noise, as these can indicate issues with the coupling. Address any problems promptly.
- Follow Manufacturer Guidelines: Adhere to the manufacturer’s recommended maintenance schedule and guidelines for the specific spider coupling model.
Proper installation and regular maintenance contribute to the reliable and efficient operation of a spider coupling in machinery.
editor by CX 2024-04-17