Product Description

Ductile Iron Grooved Pipe Coupling
We can also produce according to your drawings.
 

Size	DN25-300(1″-12″) or as customer’s requirement
Material	Ductile iron or ferritic nodular iron
Standard	DIN, ASTM, JIS, ANSI etc. Or according to customer’s drawing
Surface Furnish:	Red painted, orange painted, galvanized, red spraied, orange spraied, dacromet, epoxy powder, epoxy, electroplate, galvanized+epoxy, etc.
Pressure	300PSI, 450PSI, 500PSI, or as request
Applications:	Fire protection, Water supply system, General pipe system, Air-conditioning, Sewage system, Cement pipe system, Mine pipe systems
Packing:	1 )Packed in cartons and then packaged in pallet which will be covered by plastic film. 2)In fumigation-free wooden case
ADVANTAGE:	Easy to assemble and disassembel, easy to operate
Engineering Tests:	Vaccum Test, Hydrostatic Strength Test, Air Leakage TEST, Moment Test, Hot Gasket Test, Cold Gasket Test, Flame Test, Cycling Pressure Resistance(Water Heamer Test),
	Friction Loss Determination, Leakage Test-Assembly without Gasket, Torsion Test, Flexibility Test for Flexible Fittings, Seismic Evaluation, Lateral Displacement, Hydrostatic Fluctuation Pressure Test, Fire Test

Flexbile 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	105	45
1¼	1.669	2.07	2.559	4.133	1.772
40	48.3	300	71.	110     4.331	45
1½	1.9	2.07	2.795		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
65	76.1	300	100	142	45
3OD	3	2.07	3.937	5.59	1.772
80	88.9	300	113	160	46
3	3.5	2.07	4.449	6.299	1.811
100	114.3	300	142	190	49
4	4.5	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	165.1	300	194	244	49
6.5OD	6.5	2.07	7.638	9.606	1.929
150	168.3       6.625	300	198	248	49
6		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
250	273	300	328	420	64
10	10.748	2.07	12.913	16.535	2.52
300	323.9	300	380	454	64
12	12.752	2.07	14.961	17.874	2.52

 

Are There Any Safety Considerations When Using Rigid Couplings in Rotating Machinery?

Yes, there are several safety considerations to keep in mind when using rigid couplings in rotating machinery. While rigid couplings offer various advantages, their use in certain applications requires careful attention to safety measures to prevent accidents and equipment damage. Here are some important safety considerations:

– Secure Installation: Proper installation of rigid couplings is crucial to ensure safety. The coupling must be securely mounted and aligned with the shafts to prevent any slippage or disengagement during operation. Use of appropriate mounting hardware, such as high-strength bolts, is essential to maintain the coupling’s integrity under high-speed and high-torque conditions.

– Shaft Alignment: Accurate shaft alignment is necessary to avoid excessive forces and stress on the connected machinery. Misaligned shafts can lead to uneven loading and increased wear on bearings and other components. Regularly inspect and maintain the shaft alignment to prevent premature failures.

– Preventing Over-Torquing: Applying excessive torque during the installation of rigid couplings can lead to equipment damage and compromise safety. Follow the manufacturer’s torque specifications and use torque-limiting tools to prevent over-torquing and potential failures.

– Protective Guards: In some applications, rotating machinery with rigid couplings may pose a safety hazard to personnel working nearby. Install appropriate protective guards and covers to prevent accidental contact with rotating shafts, minimizing the risk of injury.

– Regular Maintenance: Implement a routine maintenance schedule to inspect the rigid couplings and associated equipment. Check for signs of wear, fatigue, or cracks. Address any issues promptly to avoid potential catastrophic failures.

– Operational Speed Limits: Be aware of the operational speed limits specified by the manufacturer for the rigid couplings. Exceeding these limits can result in significant stress and fatigue on the coupling, leading to failure.

– Appropriate Coupling Selection: Choose the appropriate type and size of rigid coupling for the specific application. Using an undersized coupling can lead to excessive loads and potential failure, while an oversized coupling may not efficiently transmit torque.

– Temperature Considerations: Rigid couplings can experience temperature variations during operation. Ensure that the material and design of the coupling are suitable for the anticipated temperature range of the application to maintain safety and performance.

– Training and Awareness: Provide proper training to personnel working with rotating machinery equipped with rigid couplings. Ensure they are aware of safety procedures and potential hazards associated with the equipment.

Adhering to these safety considerations will help ensure the safe and reliable operation of rotating machinery equipped with rigid couplings. Regular maintenance, correct installation, and diligent attention to safety guidelines will minimize risks and contribute to a safe working environment.

Can Rigid Couplings Be Used in Applications with Varying Operating Temperatures?

Rigid couplings are versatile mechanical components that can be used in a wide range of applications, including those with varying operating temperatures. However, the selection of the appropriate material for the rigid coupling is crucial to ensure its reliable performance under different temperature conditions.

Material Selection: The choice of material for the rigid coupling depends on the specific operating temperature range of the application. Common materials used in manufacturing rigid couplings include steel, stainless steel, and aluminum, among others. Each material has its own temperature limitations:

– Steel: Rigid couplings made from steel are suitable for applications with moderate to high temperatures. Steel couplings can handle temperatures ranging from -40°C to around 300°C, depending on the specific grade of steel used.

– Stainless Steel: Stainless steel rigid couplings offer higher corrosion resistance and can be used in applications with more demanding temperature environments. They can withstand temperatures from -80°C to approximately 400°C.

– Aluminum: Aluminum rigid couplings are commonly used in applications with lower temperature requirements, typically ranging from -50°C to around 120°C.

Thermal Expansion: When selecting a rigid coupling for an application with varying temperatures, it is essential to consider thermal expansion. Different materials have different coefficients of thermal expansion, meaning they expand and contract at different rates as the temperature changes. If the operating temperature fluctuates significantly, the thermal expansion of the rigid coupling and the connected components must be carefully accounted for to avoid issues with misalignment or binding.

Extreme Temperature Environments: For applications with extremely high or low temperatures beyond the capabilities of traditional materials, specialized high-temperature alloys or composites may be required. These materials can withstand more extreme temperature conditions but may come with higher costs.

Lubrication: The choice of lubrication can also play a role in the suitability of rigid couplings for varying temperature applications. In high-temperature environments, consideration should be given to using high-temperature lubricants that can maintain their effectiveness and viscosity at elevated temperatures.

In conclusion, rigid couplings can indeed be used in applications with varying operating temperatures, but careful material selection, consideration of thermal expansion, and appropriate lubrication are essential to ensure reliable and efficient performance under changing temperature conditions.

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.

editor by CX 2023-11-16