China OEM CHINAMFG Llb Type Flexible Rubber Tyre Coupling for Metallurgy, Mining

Product Description

Newest High-Speed Resilient Rubber Tyre Coupling

The LLB Flexible Tyre Coupling is a kind of high elastic coupling, with good damping buffer and superior offset compensation performance.
The working temperature of 20~80 degrees Celsius, transmitting torque 10~20000NM, suitable for damp, dust, shock, vibration, reversing the changeable and frequent starting working conditions, and convenient assembly and disassembly, no lubrication, durable and reliable. Non standard couplings are made in accordance with special needs. In overloading work and half coupling, there will be no malignant accidents.
 

Advantages:

  1. Excellent absorbency;
  2. Disassembly;
  3. No lubrication;
  4. Easy maintenance;
  5. Long lasting;

LLB Type Tyre Coupling Main Dimension And Parameter

Type Main dimension Number of screws
Md×L 
Shaft hole diameter
d dz
Shaft hole length Allowable
Torque
Allowable
Speed
Rotary inertia Mass
D D1 H   L Tn (n) kg·m2 kg
Y J1 Z1 N·m r/min
LLB1 60 20 26 12-M4×12 6-11 16-25 10 5000 0.0003 0.4
LLB2 100 36 32/37 12-M6×18 10-19 25-42 50 5000 0.0035 1.5
LLB3 120 44 39 12-M8×20 16-24 30-52 100 4000 0.01 2.2
LLB4 140 50 45 12-M10×20 22-35 38-82 160 3150 0.571 3.1
LLB5 160 60 51 12-M10×22 25-38 44-82 224 2800 0.031 5
LLB6 185 70 58 12-M12×25 30-45 60-112 315 2500 0.07 8.1
LLB7 220 85 68 12-M12×28 35-50 60-112 500 2000 0.15 13
LLB8 265 110 82 12-M12×32 40-56 84-142 800 1600 0.30 22
LLB9 310 120 106 12-M16×40 45-71 84-142 1250 1250 0.75 35
LLB10 400 150 124 12-M20×50 60-85 107-172 1600 1800 2.2 69
LLB11 445 190 140 12-M20×56 80-120 132-212 2250 1600 4.4 110
LLB12 550 238 172 16-M24×71 100-150 167-252 5000 1200 14 190
LLB13 700 318 220 24-M24×71 130-100 202-352 1000 1000 38 340

Note:Z1 type shaft hole can not be used at both ends of half couplings.

Product Show:

Our Services:

1. Design Services
Our design team has experience in tire coupling relating to product design and development. If you have any needs for your new product or wish to make further improvements, we are here to offer our support.

2. Product Services
Raw materials → Cutting → Forging →Rough machining →Shot blasting →Heat treatment →Testing →Fashioning →Cleaning→ Assembly→Packing→Shipping

3. Samples Procedure
We could develop the sample according to your requirement and amend the sample constantly to meet your need.

4. Research & Development
We usually research the new needs of the market and develop new models when there are new cars in the market.

5. Quality Control
Every step should be a special test by Professional Staff according to the standard of ISO9001 and TS16949.

 

 

FAQ
Q 1: Are you a trading company or a manufacturer?
A: We are a professional manufacturer specializing in manufacturing
various series of cardan shafts.

Q 2:Can you do OEM?
Yes, we can. We can do OEM & ODM for all the customers with customized artworks in PDF or AI format.

Q 3:How long is your delivery time?
Generally, it is 20-30 days if the goods are not in stock. It is according to quantity.

Q 4: Do you provide samples? Is it free or extra?
Yes, we could offer the sample but not for free. Actually, we have a very good price principle, when you make the bulk order the cost of the sample will be deducted.

Q 5: How long is your warranty?
A: Our Warranty is 12 months under normal circumstances.

Q 6: What is the MOQ?
A: Usually our MOQ is 1pcs.

Q 7: Do you have inspection procedures for coupling?
A:100% self-inspection before packing.

Q 8: Can I have a visit to your factory before the order?
A: Sure, welcome to visit our factory.

Q 9: What’s your payment?
A:1) T/T. 

 

Contact Us

Web: huadingcoupling
Add: No.11 HangZhou Road,Chengnan park,HangZhou City,ZheJiang Province,China /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Troubleshooting Common Issues with Tyre Couplings and Their Solutions

Tyre couplings, like any mechanical component, may encounter issues during their service life. Identifying and addressing these issues promptly is crucial to maintain the efficiency and reliability of the coupling and the connected machinery. Here are some common problems that may arise with tyre couplings and their potential solutions:

  • 1. Misalignment: Misalignment between the shafts can lead to premature wear, increased vibration, and reduced coupling performance. Inspect the coupling for any signs of misalignment, such as abnormal wear on the tyre or coupling hubs. To solve this issue, realign the shafts within acceptable tolerances or consider using a tyre coupling with higher misalignment capability if necessary.
  • 2. Excessive Vibration: Excessive vibration may indicate torsional vibration issues or misalignment. Check for any signs of damaged or worn components and ensure that the tyre coupling is adequately rated for the application’s speed and torque requirements. If vibration persists, consider using a tyre coupling with improved damping capabilities or consult with an engineer to identify the root cause.
  • 3. Overheating: Overheating can be caused by excessive torque or overloading, inadequate ventilation, or operating beyond the temperature limits of the coupling. Verify that the coupling is appropriately sized for the application’s torque requirements and check for any obstructions hindering proper cooling. If the temperature exceeds the specified limits, consider using a high-temperature variant of the coupling or implementing cooling measures.
  • 4. Abnormal Noise: Unusual noises, such as knocking or rattling, may indicate loose bolts, worn rubber elements, or misalignment. Inspect the coupling for loose connections and replace any damaged or worn parts. Additionally, verify the alignment and adjust if needed to eliminate the noise.
  • 5. Cracks or Tears in the Tyre: Cracks or tears in the rubber tyre element can compromise the coupling’s flexibility and damping properties. Inspect the tyre regularly and replace it if any damage is detected. It is essential to use the correct replacement tyre recommended by the manufacturer.
  • 6. Coupling Slippage: Slippage between the coupling and the shafts may occur due to inadequate tightening of the bolts or insufficient keying. Check the tightness of the bolts and ensure that they are torqued to the manufacturer’s specifications. If slippage persists, verify the keying or consider using a more secure keying method.

When troubleshooting tyre coupling issues, always refer to the manufacturer’s guidelines and technical documentation for specific solutions and recommendations. Regular inspections, preventive maintenance, and adherence to the manufacturer’s guidelines can help prevent and resolve problems, ensuring the smooth and efficient operation of tyre couplings and the connected machinery.

Is Backlash a Concern with Tyre Couplings, and How is it Minimized?

Backlash is a potential concern with all types of flexible couplings, including tyre couplings. Backlash refers to the amount of free movement or play between the coupling’s components, particularly the tyre element and the coupling hubs. Excessive backlash can lead to inaccuracies, vibration, and reduced responsiveness in mechanical systems. However, tyre couplings are designed to minimize backlash through various features and proper installation techniques.

Here’s how tyre couplings address and minimize backlash:

  • High Torsional Flexibility: Tyre couplings are known for their high torsional flexibility, allowing them to accommodate misalignments and angular displacements between the connected shafts. This flexibility helps to minimize the transmission of torsional forces and prevent excessive backlash.
  • Material Selection: The choice of materials for the tyre element plays a vital role in minimizing backlash. High-quality elastomers, such as natural rubber or synthetic rubber compounds, provide excellent damping properties and resilience. These materials are selected to maintain a tight fit between the tyre and the coupling hubs, minimizing any free movement.
  • Tight Fit Design: Tyre couplings are designed to have a tight fit between the tyre element and the hubs. The rubber tyre is molded or bonded to the hubs with a precise fit, reducing any potential play between the components.
  • Proper Installation: Ensuring proper installation is crucial to minimize backlash. The tyre coupling should be mounted and aligned following the manufacturer’s guidelines. Tightening the coupling bolts to the specified torque values ensures a secure fit and reduces the risk of backlash due to loose connections.
  • Regular Maintenance: Like any mechanical component, tyre couplings require periodic inspections and maintenance. Regularly checking for wear, damage, or signs of deterioration in the tyre element allows for early detection and replacement, minimizing the risk of increased backlash over time.

While tyre couplings are designed to minimize backlash, it is essential to choose the appropriate coupling size and type for the specific application. Additionally, considerations such as operating conditions, torque requirements, and misalignment levels should be accounted for during the coupling selection process to ensure optimal performance and backlash reduction.

By selecting high-quality tyre couplings, following proper installation procedures, and conducting regular maintenance, users can effectively minimize backlash and ensure the coupling’s reliable and efficient operation in mechanical systems.

How to Properly Install and Maintain a Tyre Coupling?

Proper installation and maintenance of a tyre coupling are essential to ensure its reliable performance and longevity. Follow these steps for the correct installation and ongoing maintenance:

  1. Inspect the Coupling: Before installation, carefully inspect the tyre coupling for any visible damage or defects. Check the rubber tyre element for signs of wear, cracks, or deterioration. Ensure that all components, including the hubs and fasteners, are in good condition.
  2. Prepare the Shaft Ends: Clean and degrease the shaft ends that will be connected by the tyre coupling. Remove any dirt, rust, or debris to achieve a clean and smooth surface for proper coupling attachment.
  3. Align the Shafts: Ensure the shafts to be coupled are properly aligned within the recommended tolerances. Misalignment can lead to premature wear and failure of the coupling. Follow the manufacturer’s guidelines for alignment specifications.
  4. Insert the Tyre Element: Carefully place the rubber tyre element between the hubs of the tyre coupling. Align the hubs and the tyre element to ensure they fit together correctly.
  5. Secure the Hubs: Assemble the coupling hubs around the tyre element and align them with the shaft ends. Use the appropriate fasteners (bolts or screws) and tighten them evenly and gradually in a criss-cross pattern to avoid uneven pressure on the tyre element.
  6. Check for Uniform Gap: After tightening the fasteners, check for a uniform gap between the tyre element and the hubs on both sides. An even gap indicates that the tyre coupling is properly installed.
  7. Lubrication: Some tyre couplings may require lubrication at the tyre-hub interface. Follow the manufacturer’s guidelines for the type and amount of lubricant to be used.
  8. Perform a Test Run: After installation, perform a test run of the machinery to ensure the coupling operates smoothly without any abnormal vibrations or noises.

Maintenance:

  1. Regular Inspection: Periodically inspect the tyre coupling for signs of wear, damage, or misalignment. Pay attention to the condition of the rubber tyre element and ensure it is free from cracks or degradation.
  2. Torque Check: Check and retighten the fasteners at regular intervals to maintain the proper clamping force and prevent any loosening that could lead to coupling failure.
  3. Lubrication: If the tyre coupling requires lubrication, adhere to the recommended lubrication schedule provided by the manufacturer.
  4. Replace Worn Components: If any components, such as the rubber tyre element or fasteners, show signs of wear or damage, replace them promptly with compatible and high-quality replacements.
  5. Address Misalignment: If there is any indication of misalignment during maintenance checks, take corrective measures to realign the shafts to prevent further coupling wear and potential equipment damage.
  6. Keep the Environment Clean: Ensure the coupling area is kept clean and free from debris, which can contribute to premature wear and affect coupling performance.

By following proper installation procedures and conducting regular maintenance, a tyre coupling can deliver reliable and efficient performance, contributing to the smooth operation and extended lifespan of industrial machinery and equipment.

China OEM CHINAMFG Llb Type Flexible Rubber Tyre Coupling for Metallurgy, Mining  China OEM CHINAMFG Llb Type Flexible Rubber Tyre Coupling for Metallurgy, Mining
editor by CX 2024-03-27

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