China manufacturer Grooved Coupling (rigid type)

Product Description

Product Name:  
Rigid coupling for connecting fire protection pipe

Material:
Ductile cast iron 

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

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 also manufacture different sizes according to your requirement.

About US:
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rigid coupling

Can Rigid Couplings Accommodate High Torque and High-Speed Applications?

Yes, rigid couplings are well-suited for high torque and high-speed applications. Their design and construction allow them to efficiently transmit large amounts of torque and handle high rotational speeds without compromising performance or introducing backlash.

Rigid couplings are typically made from robust materials, such as steel or aluminum, which provide high strength and stiffness. This allows them to withstand substantial torque loads without deformation or failure. Additionally, rigid couplings do not have flexible elements, such as elastomers or springs, which can be a limiting factor in high-torque applications.

The absence of flexible elements also means that rigid couplings have minimal backlash. Backlash is the clearance between mating teeth in a coupling and can cause position inaccuracies, especially in high-precision systems. Since rigid couplings have a solid, one-piece design, they offer precise and immediate torque transmission, making them suitable for applications requiring high accuracy and repeatability.

Furthermore, the solid construction of rigid couplings allows them to handle high rotational speeds. They do not exhibit the bending or torsional flexibility seen in some other coupling types, which can be limiting factors in high-speed applications. As a result, rigid couplings are commonly used in various high-speed machinery, such as power transmission systems, motors, pumps, and industrial equipment.

However, it is essential to ensure proper alignment and installation when using rigid couplings in high-torque and high-speed applications. Any misalignment between the shafts can lead to increased stresses and premature failure. Regular maintenance, including shaft alignment checks, can help ensure optimal performance and longevity in such demanding applications.

In summary, rigid couplings are an excellent choice for high torque and high-speed applications due to their robust design, minimal backlash, and ability to provide precise torque transmission. When correctly installed and maintained, rigid couplings can reliably handle the demands of various industrial and mechanical systems.

rigid coupling

How Does a Rigid Coupling Handle Angular, Parallel, and Axial Misalignment?

Rigid couplings are designed to provide a fixed and rigid connection between two shafts. As such, they do not have any built-in flexibility to accommodate misalignment. Therefore, when using a rigid coupling, it is essential to ensure proper shaft alignment to avoid excessive forces and premature wear on connected equipment.

Angular Misalignment: Angular misalignment occurs when the axes of the two shafts are not collinear and form an angle with each other. Rigid couplings cannot compensate for angular misalignment, and any angular misalignment should be minimized during installation. Precision alignment techniques, such as laser alignment tools, are often used to achieve accurate angular alignment.

Parallel Misalignment: Parallel misalignment, also known as offset misalignment, happens when the axes of the two shafts are parallel but have a lateral displacement from each other. Rigid couplings cannot accommodate parallel misalignment. Therefore, precise alignment is crucial to prevent binding and excessive forces on the shafts and bearings.

Axial Misalignment: Axial misalignment occurs when the two shafts have an axial (longitudinal) displacement from each other. Rigid couplings cannot address axial misalignment. To prevent thrust loads and additional stresses on bearings, it is essential to align the shafts axially during installation.

In summary, rigid couplings are unforgiving to misalignment and require precise alignment during installation. Any misalignment in a rigid coupling can lead to increased wear, premature failure of components, and reduced overall system efficiency. Therefore, it is crucial to use appropriate alignment techniques and tools to ensure optimal performance and longevity of the connected equipment.

rigid coupling

Advantages of Using Rigid Couplings in Mechanical Systems:

Rigid couplings offer several advantages when used in mechanical systems. These advantages make them a preferred choice in certain applications where precise alignment and high torque transmission are essential. Here are the key advantages of using rigid couplings:

  • 1. High Torque Transmission: Rigid couplings are designed to handle high torque and power transmission without any loss due to flexibility. They provide a direct and solid connection between shafts, allowing for efficient transfer of rotational motion.
  • 2. Precise Alignment: Rigid couplings maintain precise alignment between connected shafts. When installed correctly, they ensure that the two shafts are perfectly aligned, which is crucial for applications where accurate positioning and synchronization are required.
  • 3. Synchronous Rotation: The rigid connection provided by these couplings enables synchronous rotation of the connected shafts. This is particularly important in applications where components must move in precise coordination with each other.
  • 4. Simple Design: Rigid couplings have a straightforward design with minimal moving parts. This simplicity makes them easy to install and maintain, reducing the chances of mechanical failure.
  • 5. Cost-Effective: Compared to some other coupling types, rigid couplings are generally more cost-effective. Their simple design and robust construction contribute to their affordability.
  • 6. High Strength and Durability: Rigid couplings are typically made from strong and durable materials such as steel, stainless steel, or aluminum. These materials can withstand heavy loads and provide long-lasting performance in demanding applications.

Rigid couplings are commonly used in various industries and applications, including high-precision machinery, robotics, automation systems, precision motion control, and machine tools. They are especially beneficial in scenarios where misalignment needs to be minimized or avoided altogether.

It’s important to note that while rigid couplings offer these advantages, they are not suitable for applications where shaft misalignment or shock absorption is required. In such cases, flexible couplings or other specialized coupling types may be more appropriate.

China manufacturer Grooved Coupling (rigid type)  China manufacturer Grooved Coupling (rigid type)
editor by CX 2024-05-07


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