Product Description

Product Description

Basic Feature

Material: PTFE

Density (at delivery):2.3 g/cm³

temperature range: -240°C — + 260°C

short term up to +315°C

pressure: from vacuum up to 200 bar

Chemical resistance:pH 0 -14

Properties and advantages of ptfe:
1. High temperature resistance — operating temperature up to 250ºC.
2. Low temperature resistance — good mechanical toughness;5% elongation can be maintained even when the temperature drops to -180ºC.
3. Corrosion resistance — inert to most chemicals and solvents, strong acid and alkali resistance, water and various organic solvents.
4. Weather resistance — excellent aging life in plastics.
5. High lubrication — lowest friction coefficient among CHINAMFG materials.
6. Non-adhesion — the surface tension of CHINAMFG materials is small and does not adhere to any material.
7. Non-toxic — with physiological inertia, no adverse reactions after long-term implantation of artificial blood vessels and organs

Standard Size(mm)

Length * Width: 1/16″*4″
Thickness:  

Package

1). Packed by carton box by roll;

2). Packed by plywood case

Product application

 

The application of fluoropolymer products is developing fast in recent years.

PTFE is CHINAMFG as ” king of plastic”.As an alternative of traditional plastic, PTFE and other modified PTFE products are now widely used for their many advantages:

Non-stick;

Corrosion resistance;

CHINAMFG and sunshine tolerance;

Thermal stability;

Fire resistance;

Physiological inertia;

Electric insulation.

 

Here shows some main fields that PTFE products are widely used.

Chemical industry

Aerospace industry

Medical instruments

Electronic engineering

Semi-conduct industry

Machinery industry

 

Company Profile

HangZhou CHINAMFG Mechanical Part founded in 2571,located in beautiful Xihu (West Lake) Dis. disctrict following the high technology of CHINAMFG Slovakia.Our company mainly managed in spiral wound gaskets,PTFE gaskets,high temperature graphite gaskets,expanded PTFE gaskets,filled PTFE sheet,graphite sheet,Non asbestos sheet,disc spring,and other mechanical parts and valve,pump using gland packing.

We have large stock all the year around and we compete with good price,quick delivery, enthusiastic aftersale service to serve our customers around the world. Our all products are widely using in Metallurgy,Chemicals,Petrol Chemical industry,Electric industry,shipbuilding industry and others. We cooperate with main manufactures this field and exports our products to Europe,Southeast Asia,Africa,etc and get good feedback.Extremely good sealing performance; Non asbestos gasket working in top temperature upto 800ºC. Production technology in the international leading level, material can help plant save cost.

Our Tenet:

  • Listen carefully to customers requirement.
  • Build products quality with heart.
  • Provide satisfying service with honest
  • Remember good after-sale service is the only reason we live.

 

Certifications

exhibition

  • Raw Material

    The self-developed advanced production equipment meets the diversified demands of products and saves cost and materials for users.

  • Technical Assistance

    Efficient machining center to provide customers with a variety of conventional and unconventional quality sealing components, to speed up the production cycle, improve delivery speed.

  • R & D Capabilities

    We have signed contracts with many express companies, such as Fedex, UPS, TNT, so as to facilitate various transportation needs and make transportation more rapid and convenient.

Packaging & Shipping

FAQ

 

Q1. Can you provide factory price?

A: Our products are directly supplied from CHINAMFG MECHNICAL factory at wholesale price. We will try our best to keep our price competitive in the market.

Q2. How can you guarantee quality?
A: We strictly implement ISO9001 quality system to control product quality.
Always have pre-production sample before mass production.
Always make final inspection before shipment.
We are a professional manufacturer with strong R&D team. CHINAMFG MECHNICAL equipped with leading laboratory testing equipment and professional testing personnel to ensure the stability of production and quality of products.

Q3. Can I have a sample order?
A: Yes, we welcome sample order to test and check product quality. Customized sample is also welcomed. 

Q4. What is your production lead time?
A: For mass production lead time, normally is 2-4 weeks after order confirmation according to volume and plHangZhou.

Q5. What is your mode of transportation and what about the transportation time?
A: For small sample delivery by courier, DHL, UPS, FedEx or TNT usually takes 3-5 days to arrive. 
For mass production cargo, airline and sea shipment generally take 7-45 days to arrive.
Above is in general condition and varies due to transportation distance and national policy.

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sleeve coupling

Are there Specific Temperature and Torque Limits for Different Sleeve Coupling Materials?

The temperature and torque limits of sleeve couplings can vary depending on the materials used in their construction. Different materials offer different performance characteristics, and selecting the appropriate material is essential to ensure the coupling can withstand the operating conditions. Here are some common sleeve coupling materials and their associated temperature and torque limits:

1. Steel Sleeve Couplings:

Steel sleeve couplings are robust and can handle a wide range of temperatures and torques. They are suitable for applications in industrial machinery, power transmission systems, and various other fields. The temperature limits for steel sleeve couplings typically range from -30°C to 150°C (-22°F to 302°F). The torque limits can vary based on the specific design and size of the coupling but are generally high, making them suitable for heavy-duty applications.

2. Stainless Steel Sleeve Couplings:

Stainless steel sleeve couplings offer better corrosion resistance compared to standard steel couplings. They are ideal for applications where exposure to moisture or aggressive environments is a concern. Stainless steel sleeve couplings often have similar temperature limits to standard steel couplings, ranging from -30°C to 150°C (-22°F to 302°F). The torque limits for stainless steel couplings are also comparable to those of steel couplings.

3. Aluminum Sleeve Couplings:

Aluminum sleeve couplings are lightweight and suitable for applications where reduced inertia is desired. However, they have lower torque and temperature limits compared to steel or stainless steel couplings. The temperature limits for aluminum sleeve couplings typically range from -20°C to 80°C (-4°F to 176°F). Due to their lower torque capacity, aluminum couplings are more suitable for light to moderate-duty applications.

4. Brass or Bronze Sleeve Couplings:

Brass or bronze sleeve couplings offer good corrosion resistance and are often used in marine applications or environments where exposure to saltwater is a concern. The temperature limits for brass or bronze couplings are similar to those of aluminum couplings, ranging from -20°C to 80°C (-4°F to 176°F). Their torque capacity is also limited, making them suitable for light-duty applications.

5. Thermoplastic Sleeve Couplings:

Thermoplastic sleeve couplings are lightweight and provide excellent chemical resistance. They are suitable for use in corrosive environments or applications where non-metallic components are desired. The temperature limits for thermoplastic couplings typically range from -40°C to 80°C (-40°F to 176°F). Their torque limits are generally lower, making them suitable for light-duty or precision applications.

It is essential to check the manufacturer’s specifications and recommendations for each specific sleeve coupling model to determine its temperature and torque limits accurately. Additionally, the application’s operating conditions, such as the presence of shock loads, vibrations, or speed variations, should be considered when selecting the appropriate sleeve coupling material to ensure reliable and long-lasting performance.

sleeve coupling

What are some Real-world Examples of Successful Sleeve Coupling Installations and their Benefits?

There are numerous real-world examples of successful sleeve coupling installations in various industries, each demonstrating the benefits of using these couplings in different applications. Here are some examples:

  • Pump Systems: Sleeve couplings are commonly used in pump systems to connect the motor shaft to the pump impeller. The simplicity and ease of installation of sleeve couplings make them a popular choice in this application. Benefits include reliable power transmission, easy maintenance, and cost-effectiveness.
  • Conveyor Systems: In conveyor systems, sleeve couplings are used to connect the conveyor motor to the driving pulley shaft. The ability to accommodate misalignment and the low maintenance requirements of sleeve couplings contribute to the smooth operation and long service life of these systems.
  • Automation Machinery: Sleeve couplings play a crucial role in various automation machinery, such as robotics and CNC machines. Their compact design and torsional flexibility ensure precise motion control and efficient power transmission.
  • Industrial Mixers and Agitators: Sleeve couplings are used in mixers and agitators to connect the motor shaft to the mixing impeller or agitator. The ability to handle misalignment and dampen vibrations helps improve the equipment’s performance and reliability.
  • Machine Tools: In machine tools, such as lathes and milling machines, sleeve couplings are utilized for connecting the motor to the tool’s spindle. The backlash-free characteristics of some sleeve couplings contribute to the precision and accuracy of machining operations.
  • Automotive Industry: In the automotive industry, sleeve couplings are used in various components, such as windshield wipers, power windows, and power seats. Their compact size and ease of installation make them suitable for these automotive applications.
  • Printing Equipment: Sleeve couplings are commonly used in printing presses to connect the motor to various rollers and cylinders. The simple design and reliable performance of sleeve couplings contribute to the efficiency of printing processes.

The benefits of sleeve couplings in these real-world examples include:

  • Easy Installation: Sleeve couplings are easy to install, reducing downtime during equipment assembly or maintenance.
  • Misalignment Compensation: Sleeve couplings can accommodate minor misalignments, reducing the risk of shaft damage and increasing the equipment’s lifespan.
  • Vibration Damping: Sleeve couplings dampen vibrations and shocks, minimizing stress on connected components and extending their service life.
  • Cost-effectiveness: Sleeve couplings offer a cost-effective solution for many power transmission applications, making them a popular choice in various industries.
  • Low Maintenance: Sleeve couplings require minimal maintenance, leading to reduced operating costs and increased productivity.
  • Torsional Flexibility: The torsional flexibility of sleeve couplings allows for smooth power transmission, reducing the risk of equipment damage due to sudden torque spikes.

These real-world examples demonstrate how sleeve couplings contribute to the efficiency, reliability, and performance of diverse mechanical systems in numerous industrial settings.

sleeve coupling

What are the Different Types of Sleeve Couplings Available, and How do They Differ in Application?

Sleeve couplings come in various designs, each tailored for specific applications and operating conditions. The main types of sleeve couplings include:

  1. Standard Sleeve Couplings:

    Standard sleeve couplings are the most common type and consist of a solid cylindrical sleeve with minimal features. They are used in general-purpose applications where the shafts are well-aligned and do not require significant misalignment compensation. These couplings are simple, cost-effective, and easy to install.

  2. Spacer Sleeve Couplings:

    Spacer sleeve couplings are designed with an additional spacer between the shafts. The spacer provides extra clearance and allows for increased angular misalignment compensation. These couplings are suitable for applications where shafts may experience slight angular misalignment or need more axial spacing.

  3. Split Sleeve Couplings:

    Split sleeve couplings are divided into two halves that can be installed or removed without moving the connected shafts. They are used in applications where it is challenging to slide the coupling over the shaft ends due to space constraints or other restrictions. Split sleeve couplings simplify maintenance and installation in confined spaces.

  4. Flanged Sleeve Couplings:

    Flanged sleeve couplings have flanges at both ends of the sleeve, providing additional support and improved radial stiffness. The flanges help maintain shaft alignment and prevent lateral movement. These couplings are suitable for applications where precise shaft alignment is required, such as high-speed machinery.

  5. Ring-Flex Sleeve Couplings:

    Ring-flex sleeve couplings are designed with multiple rings or segments that are stacked together to form the coupling. The segmented design provides flexibility and allows for significant angular and axial misalignment. These couplings are used in applications where substantial misalignment compensation is necessary, such as in drives with parallel shafts.

The choice of sleeve coupling depends on the specific requirements of the application. Standard sleeve couplings are suitable for well-aligned shafts, while spacer sleeve couplings are preferred for applications with slight angular misalignment. Split sleeve couplings are ideal for limited access installations, and flanged sleeve couplings offer enhanced alignment for high-speed applications. For applications with significant misalignment, ring-flex sleeve couplings provide the most flexibility and compensation.

When selecting a sleeve coupling, considerations include the magnitude of misalignment, shaft sizes, torque requirements, operating speed, and environmental conditions. Proper coupling selection ensures efficient power transmission, reduces wear on connected equipment, and extends the lifespan of the mechanical system.

China Standard PTFE Single Sleeve Coupling Hydraulic Coupling  China Standard PTFE Single Sleeve Coupling Hydraulic Coupling
editor by CX 2024-01-23