China OEM Ductile Iron Grooved Fittings Flexible/Rigid Coupling

Product Description

Ductile Iron Grooved Fittings Flexible/Rigid Coupling

We can also produce according to your drawings.
 

Material Ductile Iron (ASTM A536 Grade 65-45-12)
Gasket Material EPDM
Surface Treatment Epoxy-(Red)RAL3000, Epoxy-Orange, Epoxy powder painting,Hot Galvanized,
Size 1″-12″
Working Pressure 300PSI
Cerification ALL approved
Connect End Type Grooved end ,Thread end
Technology Casting
Bolts and Nuts ISO 898-1 Class8.8
Payment by T/T,L/C
Packaging In poly wooden case,or in carton on the poly wooden pallets,we can pack products as per custmon’s requirement.
Delivery detail normally within 15days,depending on order quantity.
Structure type 1) Rigid Coupling,Flexible Coupling, Reducing Flexible Coupling
2) Long Radius and Short Radius Elbow (90°/45°/22.5°/11.25°)
3) Equal Tee, Grooved Reducing Tee, Grooved Reduing Tee(Threaded outlet)
4) Grooved Mechanical Tee,Grooved Mechanical Cross
5) Equal Cross, Grooved Reducing Cross
6) Grooved Reducer, Threaded Reducer
7) Adapter Flange, Grooved Split Flange
8) Cap,End Cap

UL Rigid Coupling
Nominal Size mm/in Pipe O.D mm/in Working Pressure PSI/MPa Dimensions mm/in
Ø L H
25 33.7 300 55 95 45
1 1.327 2.07 2.165 3.74          1.772
32  42.4 300 65        2.559 105          4.133 45
1¼            1.669 2.07 1.772
50 60.3  300 82 124 45
2 2.375 2.07 3.228 4.882 1.772
65  73.0       300  98 141 45 
2½      2.875 2.07 3.858      5.551    1.772   
100  114.3 300  142 190 49
4 4.500        2.07       5.59 7.48 1.929
125 139.7 300 168 218 49 
5.5OD 5.5 2.07        6.614 8.583    1.929
150 168.3  300   198 248 49
6 6.625        2.07 7.795     9.764    1.929    
200       219.1 300    256 320  60 
8 8.625        2.07 10.079 12.598 2.362
300   323.9   300   380     454  64 
12 12.752       2.07      14.961 17.874 2.52    

 

flexible coupling

How do you install and align a flexible coupling properly to ensure optimal performance?

Proper installation and alignment of a flexible coupling are essential to ensure its optimal performance and longevity. Incorrect installation can lead to premature wear, increased vibrations, and potential equipment failure. Below are the steps to install and align a flexible coupling properly:

1. Pre-Installation Inspection:

Before installation, inspect the flexible coupling and its components for any visible damage or defects. Check that the coupling’s size and specifications match the application requirements. Ensure that the shafts and equipment connected to the coupling are clean and free from debris.

2. Shaft Preparation:

Prepare the shafts by removing any oil, grease, or contaminants from the surfaces that will come into contact with the coupling. Ensure that the shaft ends are smooth and free from burrs that could affect the fit of the coupling.

3. Coupling Hub Installation:

Slide the coupling hubs onto the shafts, ensuring they are positioned securely and evenly on each shaft. Use a lubricant recommended by the manufacturer to facilitate the installation and ensure a proper fit.

4. Alignment:

Proper alignment is critical for the performance and longevity of the flexible coupling. Align the shafts by checking both angular and parallel misalignment. Utilize precision alignment tools, such as dial indicators or laser alignment systems, to achieve accurate alignment. Follow the manufacturer’s alignment specifications and tolerance limits.

5. Tightening Fasteners:

Once the shafts are properly aligned, tighten the coupling’s fasteners to the manufacturer’s recommended torque values. Gradually tighten the fasteners in a cross pattern to ensure even distribution of the load on the coupling hubs. Avoid over-tightening, as it may cause distortion or damage to the coupling.

6. Run-Out Check:

After installation, perform a run-out check to verify that the coupling’s rotating components are balanced and aligned. Excessive run-out can lead to vibrations and reduce the coupling’s performance. If significant run-out is detected, recheck the alignment and address any issues that may be causing it.

7. Lubrication:

Ensure that the flexible coupling is adequately lubricated, following the manufacturer’s recommendations. Proper lubrication reduces friction and wear, enhancing the coupling’s efficiency and reliability.

8. Periodic Inspection and Maintenance:

Regularly inspect the flexible coupling for signs of wear, misalignment, or damage. Address any issues promptly to prevent further problems. Depending on the coupling type and application, scheduled maintenance may include re-greasing, re-alignment, or replacing worn components.

Summary:

Proper installation and alignment are crucial for ensuring the optimal performance and longevity of a flexible coupling. Following the manufacturer’s guidelines, inspecting the components, achieving accurate alignment, and using the appropriate lubrication are key steps in the installation process. Regular inspection and maintenance help to identify and address potential issues, ensuring the coupling continues to operate smoothly and efficiently in 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

Can flexible couplings be used in both horizontal and vertical shaft arrangements?

Yes, flexible couplings can be used in both horizontal and vertical shaft arrangements. The design of flexible couplings allows them to accommodate misalignment and compensate for angular, parallel, and axial displacements between the shafts, making them suitable for various shaft orientations.

Horizontal Shaft Arrangements:

In horizontal shaft arrangements, where the shafts are parallel to the ground or horizontal plane, flexible couplings are commonly used to connect two rotating shafts. These couplings help transmit torque from one shaft to another while accommodating any misalignment that may occur during operation. Horizontal shaft arrangements are common in applications such as pumps, compressors, conveyors, and industrial machinery.

Vertical Shaft Arrangements:

In vertical shaft arrangements, where the shafts are perpendicular to the ground or vertical plane, flexible couplings are also applicable. Vertical shafts often require couplings that can handle the additional weight and forces resulting from gravity. Flexible couplings designed for vertical applications can support the weight of the rotating equipment while allowing for some axial movement to accommodate thermal expansion or other displacements. Vertical shaft arrangements are commonly found in applications such as pumps, gearboxes, turbines, and some marine propulsion systems.

Considerations for Vertical Shaft Arrangements:

When using flexible couplings in vertical shaft arrangements, there are a few additional considerations to keep in mind:

  • Thrust Load: Vertical shafts can generate thrust loads, especially in upward or downward direction. The flexible coupling should be selected based on its capacity to handle both radial and axial loads to accommodate these forces.
  • Lubrication: Some vertical couplings may require additional lubrication to ensure smooth operation and reduce wear, particularly if they are exposed to high axial loads or extended vertical shafts.
  • Support and Bearing: Proper support and bearing arrangements for the vertical shaft are essential to prevent excessive shaft deflection and ensure the flexible coupling functions correctly.

Overall, flexible couplings are versatile and adaptable to various shaft orientations, providing efficient power transmission and misalignment compensation. Whether in horizontal or vertical arrangements, using the appropriate flexible coupling design and considering the specific application requirements will help ensure reliable and efficient operation.

China OEM Ductile Iron Grooved Fittings Flexible/Rigid Coupling  China OEM Ductile Iron Grooved Fittings Flexible/Rigid Coupling
editor by CX 2023-09-30

flexible flange coupling

As one of leading flexible flange coupling manufacturers, suppliers and exporters of products, We offer flexible flange coupling and many other products.

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