China Professional DN50-DN300 Cast Iron Pipe Coupling and Clamps for BS En 877 Drainage Sytsem

Product Description

DN50-DN300 cast iron pipe coupling and clamps for BS EN 877 drainage sytsem 

1. our products are made strictly according to EN877 standard.
2. size range from DN50 to DN300, with 3m/pc.
3. painting: inside epoxy paint in color yellow with thickness above 120 micron, outside paint in color red with thickness above 60 micron. If you have special requirement, please contact with us, as we could also make the painting according to your requirement.
4. length/pc: 3m
5. delivery time: 7-15 days, depend on your quantity.
6. application: used for waste water/rain water/ventilation.
7. advantage: avoid pollution, noise resistant.
8. payment term: T/T, L/C, or D/P.
9. production capacity: 2000tons/ month
10. we could do the third party inspection at famous organizations such as SGS, BV, etc.
11. by now we have shipped our cast iron pipes to many countries such as Germany,Italy,UK,Hongkong,Russia,Turkey,Sweden,Norway,Singapore,the Middle East,etc.

 

DN External diameter DE(mm) Wall thickness(mm) Unit weight Length
Nominal value Tolerance Nominal value Minimum value kg/pc (mm)
40 48 +2
-1
3.0 2.5 12.70 3000+/-20
50 58 3.5 3.0 13.00
70 78 3.5 3.0 17.70
75/80 83 3.5 3.0 18.90
100 110 3.5 3.0 25.20
125 135 +2
-2
4.0 3.5 35.40
150 160 4.0 3.5 42.20
200 210 +2.5
-2.5
5.0 4.0 69.30
250 274 5.5 4.5 99.80
300 326 6.0 5.0 129.70

If any inquiry , Please feel free  to contact with me 

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clamp coupling

How do Clamp Couplings Contribute to Reducing Backlash and Resonance in Rotating Machinery?

Clamp couplings play a crucial role in reducing backlash and resonance in rotating machinery, enhancing the overall performance and reliability of the system. Here’s how they achieve this:

1. Backlash Reduction:

Backlash is the play or clearance between mating components in a mechanical system. In rotating machinery, backlash can lead to lost motion, reduced precision, and inefficiencies. Clamp couplings offer several features that help minimize backlash:

  • Zero-Backlash Design: Some clamp couplings are designed with a split hub and a clamping mechanism that ensures a tight fit around the shafts. This zero-backlash design eliminates any clearance between the coupling and the shafts, reducing or even eliminating backlash.
  • High Clamping Force: Clamp couplings exert a strong clamping force on the shafts, ensuring a secure and rigid connection. This prevents any relative movement between the coupling and the shafts, further reducing backlash.

2. Resonance Damping:

Resonance occurs when the natural frequency of a rotating system matches the frequency of external forces or disturbances. This can lead to excessive vibrations and potential damage to the machinery. Clamp couplings can help dampen resonance in the following ways:

  • Material Selection: High-quality materials like stainless steel or aluminum alloy are commonly used in clamp couplings. These materials possess excellent damping properties, dissipating vibrations and minimizing resonance effects.
  • Precision Machining: Clamp couplings are precisely machined to maintain balance and reduce vibration during operation. Balanced couplings minimize the likelihood of resonant frequencies being excited, contributing to a smoother operation.
  • Torsional Stiffness: Clamp couplings offer controlled torsional stiffness, which helps prevent the buildup of excessive vibration amplitudes and reduces resonance occurrences.

3. Misalignment Compensation:

Another factor contributing to backlash and resonance is misalignment between shafts. Clamp couplings can accommodate a certain degree of angular, parallel, and axial misalignments, reducing the impact of misalignment-induced backlash and vibrations.

Overall, clamp couplings provide a secure and precise connection between shafts, minimizing backlash and resonance in rotating machinery. By choosing the appropriate clamp coupling based on the specific requirements of the application, engineers can optimize the performance and efficiency of the rotating system.

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

What is a Clamp Coupling and How Does it Work?

A clamp coupling is a type of mechanical coupling used to connect two shafts together to transmit torque and rotational motion between them. It is a simple and effective way of joining shafts in various mechanical systems. The main components of a clamp coupling typically include two hubs and a center section.

Working Principle:

The clamp coupling works on the principle of frictional force and mechanical interference fit. Here’s how it functions:

  1. Hub Assembly: Each end of the shaft has a hub, which is a cylindrical component with a bored hole that matches the shaft diameter. The hubs may have keyways or splines to provide additional torque transmission.
  2. Center Section: The center section of the coupling sits between the two hubs. It is often a split cylindrical sleeve with threaded holes on its outer surface.
  3. Clamping: To assemble the clamp coupling, the two hubs are placed on the respective shafts, and the center section is inserted between them. Then, bolts are inserted through the holes in the hubs and screwed into the threaded holes of the center section. As the bolts are tightened, the center section is drawn inward, creating a compressive force on the shafts and the hubs, thus firmly holding them together.
  4. Frictional Connection: The clamping force between the center section and the shafts creates a frictional connection. This frictional force allows the coupling to transmit torque and rotational motion from one shaft to the other.

Advantages:

Clamp couplings offer several advantages:

  • Easy and quick installation, requiring minimal tools and no special skills.
  • Simple design and cost-effective manufacturing.
  • High torque transmission capacity, making them suitable for various industrial applications.
  • Zero backlash, ensuring accurate and precise motion transfer.
  • Can accommodate different shaft sizes and materials, providing flexibility in design.

Applications:

Clamp couplings find application in a wide range of industries and mechanical systems, including:

  • Power transmission in industrial machinery and equipment.
  • Robotics and automation systems.
  • Printing and packaging machines.
  • Material handling equipment.
  • Pumps and compressors.
  • Conveyor systems.

Overall, clamp couplings are a reliable and versatile solution for connecting rotating shafts and transferring power in various mechanical setups.

China Professional DN50-DN300 Cast Iron Pipe Coupling and Clamps for BS En 877 Drainage Sytsem  China Professional DN50-DN300 Cast Iron Pipe Coupling and Clamps for BS En 877 Drainage Sytsem
editor by CX 2024-04-13