Product Description

Product Description

SFC/SFCS  series coupling set screw, flexible coupling

Technical Parameters	value
Model	SFC	SFCS
NO.	SFC16~SFC63	SFCS16~SFCS63
Rated torque (N.M)	0.3~20	0.5~35
Max. torque (N.M)	0.6~40	1~70
Max. rotational (rpm)	6100~24000	6100~24000
Moment of inertia (kg.m 2)	3.3*10 -7~3.2*10 -4	8.4*10-7~8.4*10-4
Staic torional (N.M/ rad)	47~850	85~1800
Allowable eccentricity error(mm)	0.1~0.2	0.1~0.2
Allowable angular error(0)	2	2
Allowable shaft end-play ( mm )	±0.4~±0.5	±0.3~±0.5
Material	auminum	staniness

Company Profile

 

      HangZhou liHangZhou Machinery Co., Ltd. is a ZheJiang funded enterprise integrating design, R & D, professional production and sales of automatic machinery products and providing technical consultation and after-sales service. Since its establishment for more than 10 years, the company has been committed to the R & D and production of automatic machinery, and provides OEM production for major brands in the industry. It has a professional R & D team, strong technical force and perfect sales scheme, has accumulated a lot of technology and experience, and has developed a series of products that are more suitable for domestic users in China. Its overall technology is higher than that of similar products in the industry. Xihu (West Lake) Dis.d by the production of high-precision products and the business philosophy of “professionalism, integrity and service”, the company is committed to building a brand in China’s automation machinery industry.

FAQ

1) Customize prodcuts are available ? 

     Yes, Customize products are available. We could design and produce products according to your requirements or darwings. You just need to tell us your detailed requirements and our technicists will design and provide materials for your confimation. If all is ok, the production will be arranged. 

2)  What’s your payment terms? 
    For small order, considering the value is not large, the payment terms are 100% T/T in advance. 
    For large order, we could negotiate. 

3) how about the packaging and shipment? 
    Packaging : in box (wooden case). 
    Shipment : according to customer’s instruction. 

4) How about the lead time ? 
   For common model, the lead time is about 15 workdays; 
   For customize model, the lead time is longer, about 30 workdays.

5) How about the quarantee period ? 
    In generall, the quarantee period – 1 year for assembly unit from the date of sale .  /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

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How Do Bellows Couplings Contribute to Reducing Vibrations and Ensuring Smooth Operation?

Bellows couplings play a crucial role in reducing vibrations and ensuring smooth operation in mechanical power transmission systems. They achieve this through their unique design and material characteristics, which allow them to absorb and dampen vibrations effectively. Here’s how bellows couplings contribute to minimizing vibrations and promoting smooth operation:

• Flexible Bellows Design: Bellows couplings feature a thin-walled, accordion-like structure known as the bellows. This design provides flexibility in multiple directions, allowing the coupling to compensate for minor misalignments and shaft movements. The bellows’ flexing action absorbs shocks and vibrations, preventing them from propagating through the system and reducing the transmission of vibration to connected equipment.
• Vibration Damping: The flexible bellows act as a vibration damper, absorbing and dissipating vibrational energy generated during the operation. When the system experiences dynamic forces or sudden shocks, the bellows expand and contract to absorb these forces, preventing them from resonating throughout the system. This damping action helps maintain the stability of the machinery and prevents excessive wear and tear on components.
• No Mechanical Contact: Unlike some coupling types that rely on friction or mechanical contact, bellows couplings transmit torque through pure flexure without any metal-to-metal contact. This feature eliminates backlash and torsional wind-up, further reducing vibration and ensuring smoother operation. As a result, bellows couplings are well-suited for applications requiring high precision and minimal vibration-induced errors.
• High Torsional Stiffness: While bellows couplings are designed to be flexible, they still possess high torsional stiffness. This stiffness ensures accurate torque transmission without any loss, contributing to the overall efficiency and smoothness of the system’s operation.
• Resonance Avoidance: Bellows couplings are designed to have specific critical speeds and resonant frequencies that prevent resonance from occurring within the coupling itself. Resonance can lead to severe vibration amplification, which can be detrimental to the equipment and surrounding components. The careful design of bellows couplings helps avoid such resonance issues.

By effectively dampening vibrations, absorbing shocks, and providing torsional stiffness, bellows couplings contribute to smoother operation, reduced mechanical wear, and increased overall system reliability. Their ability to handle misalignments and their high torsional stiffness make them a popular choice in precision motion control systems, robotics, and various industrial applications where smooth and accurate performance is essential.

Real-World Examples of Successful Bellows Coupling Installations and Their Benefits

1. Aerospace Industry: In aircraft engines, bellows couplings are used to connect the engine shaft to various auxiliary components, such as generators and pumps. These couplings provide precise torque transmission, compensate for misalignments, and dampen vibrations. The benefits include increased reliability, reduced maintenance, and enhanced overall performance of the aircraft engine.

2. Medical Equipment: In medical devices like MRI machines, bellows couplings are employed to transmit motion between various components with high precision and minimal backlash. The bellows couplings’ ability to accommodate axial and angular misalignments is crucial in such applications, ensuring smooth and accurate operation. The benefit is improved imaging quality and reduced wear and tear on the equipment.

3. Robotics and Automation: In industrial robots, bellows couplings are used in joint assemblies to connect the motor shaft to the robot arm. The couplings’ flexibility allows the robot arm to move smoothly and accurately, enabling precise positioning and reducing mechanical stress on the components. This leads to higher robot accuracy and faster cycle times in automated manufacturing processes.

4. Semiconductor Manufacturing: In semiconductor fabrication equipment, bellows couplings play a vital role in wafer handling systems. The couplings help maintain precise alignment between the components, ensuring accurate wafer positioning and minimizing the risk of damage to sensitive semiconductor materials. The benefit is improved yield and production efficiency in the semiconductor manufacturing process.

5. Oil and Gas Industry: In oil rigs and drilling equipment, bellows couplings are used in the drive systems to transmit torque from the power source to various components like pumps and compressors. The couplings’ ability to withstand harsh environmental conditions, including high temperatures and corrosive environments, makes them suitable for oil and gas applications. The benefit is increased equipment reliability and reduced downtime in critical oil and gas operations.

6. Precision Machinery: In high-precision machines such as CNC machining centers, bellows couplings are utilized in the spindle drive systems. The couplings’ backlash-free operation and high torsional stiffness contribute to the machine’s accuracy and repeatability during machining operations. The benefit is improved surface finish, reduced part rejections, and enhanced productivity in precision manufacturing processes.

7. Renewable Energy: In wind turbine systems, bellows couplings are employed to connect the generator shaft to the wind turbine rotor. The couplings’ ability to accommodate misalignments caused by wind and load variations helps prevent excessive stress on the turbine’s components and ensures efficient power generation. The benefit is increased energy capture and longer service life for wind turbines.

Overall, bellows couplings have demonstrated their effectiveness and versatility across various industries by providing reliable and efficient motion control solutions. Their ability to handle misalignments, dampen vibrations, and transmit torque accurately makes them valuable components in a wide range of applications, ultimately leading to improved performance, reduced downtime, and enhanced productivity in diverse industrial processes.

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What are the Different Types of Bellows Couplings Available, and Their Respective Applications?

There are several types of bellows couplings available, each designed to suit specific applications and requirements. Some of the most common types include:

• Single Bellows Coupling: This type of bellows coupling consists of a single bellows element and is suitable for applications with moderate misalignment and torsional stiffness requirements. It is commonly used in robotics, automation, and general motion control systems.
• Double Bellows Coupling: The double bellows coupling features two bellows elements with an intermediate shaft in between. This design offers higher torsional stiffness and increased angular misalignment capacity. It is often used in precision positioning equipment and applications requiring higher torque transmission.
• Flexible Beam Coupling with Bellows: This type of coupling combines the flexibility of a beam coupling with the compensating capability of a bellows coupling. It can handle moderate misalignments and provides a good balance between flexibility and torsional stiffness. It finds applications in medical devices, optical systems, and semiconductor equipment.
• Torsionally Rigid Bellows Coupling: As the name suggests, this coupling type offers exceptional torsional stiffness, making it suitable for applications where precise motion control and low torsional backlash are critical. It is commonly used in CNC machines, high-speed spindles, and other high-precision systems.
• Miniature Bellows Coupling: This type is specifically designed for applications with limited space and where low inertia is crucial. It is commonly used in small robotics, miniature positioning stages, and micro-machining systems.
• High-Temperature Bellows Coupling: This specialized coupling can withstand elevated temperatures, making it suitable for applications in harsh environments, such as aerospace, exhaust systems, and certain industrial processes.

The choice of bellows coupling type depends on the specific requirements of the application. Factors such as misalignment compensation, torsional stiffness, torque capacity, space constraints, and environmental conditions play a crucial role in selecting the appropriate coupling type.

When selecting a bellows coupling, it is essential to consider the coupling’s torque ratings, allowable misalignments, and operating conditions to ensure optimal performance and reliability. Consulting with coupling manufacturers or engineering experts can help in making an informed decision based on the specific needs of the mechanical power transmission system.

editor by CX 2024-02-29