China Best Sales UL Listed Flexible Coupling for Grooved Pipe

Product Description

Product Name:  
Flexible coupling for connecting fire protection pipe

Material:
Ductile iron 

Standard: 
UL listed & FM approved
also wen can manufacture different size according to client’s requirement.

Sizes available: 

Nominal size Pipe O.D. Working pressure                   Dimensions  Bolt size
     ∅        L     H
mm in mm in PSI Mpa mm in mm in mm in mm
25 1 33.7 1.327 300 2.07 55.6 2.188 98 3.858 44 1.732 M10*45
32 1 1/4 42.4 1.699 300 2.07 66 2.598 107 4.213 44 1.732 M10*45
40 1 1/2 48.3 1.9 300 2.07 74 2.913 115 4.527 44 1.732 M10*45
50 2 60.3 2.372 300 2.07 84 3.307 124 4.882 44 1.732 M10*55
65 2 1/2 73 2.875 300 2.07 98 3.858 138 5.433 45 1.772 M10*55
65 2 1/2 76.1 3 300 2.07 100 3.937 143 5.63 45 1.772 M10*55
80 3    88.9 3.5 300 2.07 114 4.488 157 6.181 45 1.772 M10*55
100 4    114.3 4.5 300 2.07 140 5.512 187 7.362 50 1.899 M10*65
125 5    139.7 5.5 300 2.07 172 6.771 220 8.661 50 1.899 M12*70
125 5    141.3 5.563 300 2.07 172 6.771 220 8.661 50 1.899 M12*75
150 6    165.1 6.5 300 2.07 197 7.756 252 9.921 51 2.008 M12*75
150 6    168.3 6.625 300 2.07 197 7.756 255 10.039 51 2.008 M12*75
200 8    219.1 8.625 300 2.07 254 10 330 12.992 61 2.405 M16*100
250 10 273 10.75 300 2.07 317 12.48 397.8 15.661 62 2.441 M20*110
300 12 323.9 12.751 300 2.07 370 14.566 457 17.992 60 2.362 M20*120

We can manufacture different sizes according to your requirements.

About US:
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flexible coupling

What are the torque and speed ratings for different sizes of flexible couplings?

The torque and speed ratings of flexible couplings can vary depending on their size, design, and material. Manufacturers typically provide specifications for each specific coupling model to ensure it is suitable for the intended application. Below are some general considerations regarding torque and speed ratings for different sizes of flexible couplings:

Torque Ratings:

The torque rating of a flexible coupling is the maximum amount of torque it can reliably transmit without experiencing excessive deformation or failure. It is essential to choose a coupling with a torque rating that exceeds the torque requirements of the application to ensure proper operation and avoid premature wear. Torque ratings are typically specified in Nm (Newton-meters) or lb-ft (pound-feet).

The torque capacity of a flexible coupling can increase with its size and design. Larger couplings, which have more substantial components and a larger flexible element, often have higher torque ratings compared to smaller couplings. Additionally, couplings with a more robust design, such as metallic couplings, generally have higher torque capacities compared to elastomeric couplings.

Speed Ratings:

The speed rating of a flexible coupling is the maximum rotational speed it can withstand while maintaining its structural integrity and performance. It is critical to select a coupling with a speed rating suitable for the application’s operating speed to avoid excessive wear and potential coupling failure. Speed ratings are typically specified in revolutions per minute (RPM).

Like torque ratings, the speed rating of a flexible coupling can be influenced by its size, design, and material. Larger couplings with more robust construction can often handle higher rotational speeds compared to smaller couplings. Metallic couplings, with their stiffer and more precise design, can also have higher speed ratings compared to elastomeric couplings.

Consulting Manufacturer Specifications:

To determine the torque and speed ratings for specific sizes of flexible couplings, it is essential to consult the manufacturer’s product specifications or technical datasheets. These documents provide detailed information about the coupling’s capabilities, including torque and speed ratings for each available size and model.

Application Considerations:

When selecting a flexible coupling, it is crucial to consider the torque and speed requirements of the specific application. Factors such as the power transmitted, the rotational speed of the machinery, and any transient or shock loads should be taken into account to ensure the selected coupling can handle the demands of the system.

Summary:

The torque and speed ratings of flexible couplings can vary based on their size, design, and material. Manufacturers provide specific torque and speed ratings for each coupling model to ensure their suitability for different applications. Consulting manufacturer specifications and considering the application’s requirements are vital in selecting the right flexible coupling that can handle the torque and speed demands of the mechanical system.

flexible coupling

Can flexible couplings be used in high-temperature environments, such as furnaces and kilns?

Flexible couplings can be used in high-temperature environments, such as furnaces and kilns, but the selection of the appropriate coupling is crucial to ensure reliable performance and longevity under these extreme conditions. Here are some key considerations:

  • Material Selection: The choice of materials is critical when using flexible couplings in high-temperature applications. Look for couplings made from heat-resistant materials that can withstand the elevated temperatures without experiencing significant degradation. Common materials used for high-temperature couplings include stainless steel, high-temperature alloys, and certain types of elastomers designed for heat resistance.
  • Lubrication: High temperatures can cause lubricants to break down or evaporate more quickly. Some flexible couplings may require specialized high-temperature lubricants to ensure smooth operation and reduce wear at elevated temperatures. Check the manufacturer’s recommendations for lubrication in high-temperature environments.
  • Thermal Expansion: In high-temperature applications, the equipment and shafts may experience thermal expansion, leading to misalignment. Flexible couplings with higher misalignment capabilities may be necessary to accommodate these thermal effects and prevent additional stress on the system.
  • Torsional Stiffness: Consider the required torsional stiffness for the specific application. In high-temperature environments, couplings may experience changes in stiffness due to temperature variations. It is essential to choose a coupling with appropriate torsional characteristics for the intended operating temperature range.
  • Application Specifics: Evaluate the specific operating conditions of the furnace or kiln, including the maximum and fluctuating temperatures, vibration levels, and potential exposure to chemicals or other harsh elements. Choose a coupling that can withstand these conditions without compromising performance or safety.
  • Coupling Type: Different types of flexible couplings offer varying degrees of heat resistance and performance capabilities. For example, certain types of disc couplings or metal bellows couplings are more suitable for high-temperature environments due to their robust construction and resistance to heat.
  • Regular Maintenance: In high-temperature applications, couplings may be subject to more stress and wear. Regular inspection and maintenance are essential to monitor the coupling’s condition, lubrication, and alignment to ensure it continues to function optimally in the challenging environment.

Overall, flexible couplings can be utilized in high-temperature environments, but it is vital to choose a coupling specifically designed and rated for these conditions. Working closely with coupling manufacturers and considering the specific demands of the application will help ensure that the selected coupling can handle the challenges posed by furnaces, kilns, and other high-temperature equipment, providing reliable power transmission and contributing to the overall efficiency and safety of the system.

flexible coupling

What is a flexible coupling and how does it work?

A flexible coupling is a mechanical device used to connect two shafts while allowing for relative movement between them. It is designed to transmit torque from one shaft to another while compensating for misalignment, vibration, and shock. Flexible couplings are essential components in various rotating machinery and systems, as they help protect the connected equipment and enhance overall performance.

Types of Flexible Couplings:

There are several types of flexible couplings, each with its unique design and characteristics. Some common types include:

  • Jaw Couplings: Jaw couplings feature elastomer spiders that fit between two hubs. They can accommodate angular and parallel misalignment while dampening vibrations.
  • Disc Couplings: Disc couplings use thin metallic discs to connect the shafts. They are highly flexible and provide excellent misalignment compensation.
  • Gear Couplings: Gear couplings use gear teeth to transmit torque. They offer high torque capacity and can handle moderate misalignment.
  • Beam Couplings: Beam couplings use a single piece of flexible material, such as a metal beam, to transmit torque while compensating for misalignment.
  • Bellows Couplings: Bellows couplings use a bellows-like structure to allow for axial, angular, and parallel misalignment compensation.
  • Oldham Couplings: Oldham couplings use three discs, with the middle one having a perpendicular slot to allow for misalignment compensation.

How a Flexible Coupling Works:

The operation of a flexible coupling depends on its specific design, but the general principles are similar. Let’s take the example of a jaw coupling to explain how a flexible coupling works:

  1. Two shafts are connected to the coupling hubs on either side, with an elastomer spider placed between them.
  2. When torque is applied to one shaft, it causes the spider to compress and deform slightly, transmitting the torque to the other shaft.
  3. In case of misalignment between the shafts, the elastomer spider flexes and compensates for the misalignment, ensuring smooth torque transmission without imposing excessive loads on the shafts or connected equipment.
  4. The elastomer spider also acts as a damping element, absorbing vibrations and shocks during operation, which reduces wear on the equipment and enhances system stability.

Overall, the flexibility and ability to compensate for misalignment are the key features that allow a flexible coupling to function effectively. The choice of a specific flexible coupling type depends on the application’s requirements, such as torque capacity, misalignment compensation, and environmental conditions.

China Best Sales UL Listed Flexible Coupling for Grooved Pipe  China Best Sales UL Listed Flexible Coupling for Grooved Pipe
editor by CX 2024-04-10