Product Description

Product Description

Our main products are malleable iron pipe fittings, the brand is “G”.  Others include Grooved fittings and couplings, Buttweld fittings, Steel pipe nipples and couplings, Flanges and Stainless steel thread fittings. It is widely used in fire protection, plumbing, oil, gas, infrastructure, construction and decoration etc. The products has passed the UL&FM fire safety certification. The main markets include the United States, Canada, Australia, Latin America, South America, South Africa, the Philippines, Indonesia and Vietnam, Saudi Arabia and so on.
 

Standard	ANSI,ASTM,DIN,JIS,GB,BS
Materal	Ductile Iron (ASTM A536 Grade 65-45-12)
Color	Red RAL3000 , Orange , Bule or according to custom requirements
Surface Treatment	Paint, Epoxy, Galvanization or Dacroment
Threaded	BSPT  NPT
Certification	UL FM CE  ISO 9001
Delivery Time	Normally within 15-30days
Pressure	300PSI   500PSI   2.5MPA
Payment Terms	T/T  L/C  Or  Other
Useage	1) Automatic sprinkler system for fire production on commercial,civil and municipal constructions like water supplying ,gas supplying , heat supplying , etc
	2)Industrial pipeline system on shipping , mine , textile oil field , power plant , etc
	3)Pipeline system on subway station , railway station airport , seaport, brided , etc

Detailed Photos
 

Package Detail
 

Certificate List

Company Profile
 

HangZhou Jizhong Malleable Co., Ltd. was established in 1990, nearly 30 years of production and sales experience, the company is located in HangZhou, the capital of ZheJiang Province, 300 kilometers away from ZheJiang , and same distance from the nearest port ZheJiang .
The company passed the ISO9001 management system certification and BV certification, the products passed the UL&FM fire safety certification. 
Innovation, development, harmony and CHINAMFG is the purpose of our company; professional, rationality is our sales creed. We are committed to being your trusted partner.

 

FAQ

1.Are you a manufacturer?
Yes, our factory was set up in 1990.

2.How to confirm the goods quality before placing orders?
We have a perfect quality inspection system to ensure the quality of products.

3.Acceptable payment methods?
We can accept T/T, L/C, O/A, etc

4.How long will it take to deliver?
Generally 30-50 days delivery.

Look CHINAMFG to cooperating with you!

Can Rigid Couplings Handle Misalignment Between Shafts?

Rigid couplings are not designed to handle misalignment between shafts. Unlike flexible couplings that can accommodate slight misalignment through their bending or elastic properties, rigid couplings are intended to provide a fixed and immovable connection between two shafts. As a result, any misalignment between the shafts can lead to increased stress and uneven loading on connected components.

It is essential to ensure precise alignment when using rigid couplings to avoid premature wear and failure of the system. The shafts must be perfectly aligned in both the axial and angular directions before installing the rigid coupling. Proper alignment helps distribute the load evenly and reduces stress concentration on specific areas, such as bearings and keyways.

If a system requires some level of misalignment compensation due to factors like thermal expansion or slight shaft deflection, a flexible coupling should be considered instead. Flexible couplings can tolerate small degrees of angular and axial misalignment while still transmitting torque efficiently and protecting the connected equipment from excessive stress and wear.

In summary, rigid couplings are best suited for applications where precise shaft alignment can be achieved and maintained, while flexible couplings are more appropriate for systems with potential misalignment or other dynamic factors that require some degree of flexibility.

What Industries Commonly Use Rigid Couplings for Power Transmission?

Rigid couplings are widely used in various industries for power transmission applications that require a solid and reliable connection between rotating shafts. Some of the industries that commonly utilize rigid couplings include:

• Manufacturing: In the manufacturing industry, rigid couplings are employed in a wide range of equipment, such as conveyors, mixers, pumps, compressors, and machine tools. These couplings ensure precise power transmission and alignment, making them ideal for maintaining accuracy in manufacturing processes.
• Material Handling: Material handling equipment, including cranes, hoists, and elevators, often rely on rigid couplings to transfer power between shafts efficiently. Rigid couplings provide a robust connection that can handle the heavy loads and continuous operation common in material handling applications.
• Automotive: The automotive industry employs rigid couplings in various automotive systems, including drive shafts, transmissions, and steering systems. Rigid couplings contribute to the overall performance and reliability of these components, ensuring smooth power transfer and minimizing vibration.
• Mining and Construction: In the mining and construction industries, rugged and durable power transmission components are crucial. Rigid couplings are used in equipment like crushers, mills, and heavy-duty conveyors, where they can withstand the harsh conditions and heavy loads commonly found in these applications.
• Oil and Gas: The oil and gas industry often utilizes rigid couplings in pumps, compressors, and drilling equipment. Rigid couplings offer consistent and dependable power transmission, which is essential for critical operations in this sector.
• Marine: In marine applications, such as ship propulsion systems and marine pumps, rigid couplings are used to transmit power between the ship’s engine and various equipment. They can handle the dynamic forces and vibrations encountered in marine environments.
• Aerospace: In aerospace applications, where precision and reliability are paramount, rigid couplings play a role in power transmission between various aircraft components.

Rigid couplings are chosen in these industries for their ability to maintain shaft alignment, resist misalignment, and provide a backlash-free connection. Their robust construction and simple design make them suitable for high torque and high-speed applications, where precision and efficiency are crucial.

Limitations and Disadvantages of Using Rigid Couplings:

Rigid couplings offer several advantages in providing a strong and direct connection between shafts, but they also have certain limitations and disadvantages that should be considered in certain applications:

• No Misalignment Compensation: Rigid couplings are designed to provide a fixed connection with no allowance for misalignment between shafts. As a result, any misalignment, even if slight, can lead to increased stress on connected components and cause premature wear or failure.
• Transmit Shock and Vibration: Rigid couplings do not have any damping or vibration-absorbing properties, which means they can transmit shock and vibration directly from one shaft to another. In high-speed or heavy-duty applications, this can lead to increased wear on bearings and other components.
• No Torque Compensation: Unlike flexible couplings, rigid couplings cannot compensate for torque fluctuations or angular displacement between shafts. This lack of flexibility may not be suitable for systems with varying loads or torque requirements.
• Higher Stress Concentration: Rigid couplings can create higher stress concentration at the points of connection due to their inflexibility. This can be a concern in applications with high torque or when using materials with lower fatigue strength.
• More Challenging Installation: Rigid couplings require precise alignment during installation, which can be more challenging and time-consuming compared to flexible couplings that can tolerate some misalignment.
• Increased Wear: The absence of misalignment compensation and vibration absorption can lead to increased wear on connected components, such as bearings, shafts, and seals.
• Not Suitable for High Misalignment: While some rigid couplings have limited ability to accommodate minor misalignment, they are not suitable for applications with significant misalignment, which could lead to premature failure.

Despite these limitations, rigid couplings are still widely used in many applications where precise alignment and a strong, permanent connection are required. However, in systems with significant misalignment, vibration, or shock loads, flexible couplings may be a more suitable choice to protect the connected components and improve overall system performance and longevity.

editor by CX 2023-11-09