Product Description
mall engineering plastic UHMW-PE pulley
UHMW-PE(Ultra high Molecular Weight Polyethylene )is a thermoplastic engineering plastic with the average molecular weight more than 9.0 million. (PE only has the molecular weight between 20 to 2 hundred thousand. ) This kind of material with 5 top performance of high-wear-resistance, good-chemical resistance, low-temperature resistance, self-lubrication and high-impact resistance, which is regarded as a “surprised” engineering plastic of excellent comprehensive capacity and competitive price.
Main characteristics:
1. Very high-wear resistance, 7 times wear resistance than steel, 4 times than PTFE
2. Very high anti-impact resistance, 2 times impact resistance than PC, 5 times than ABS.
3. Good self-lubrication, the same as PTFE, better than steel and brass appended lubricating oil.
4. Good anti-corrosion resistance, it has very stable chemicals property and can endure the corrosion of all kinds of corrosive medium and organic solvent in certain rang of temperature and humidity.
5. Very high-inadhesion resistance, the surface of product hardly affixes other material.
6. Very high-impact resistance, 10 times impact resistance than PA66, 8 times than PTFE.
7. Good low temperature resistance, in liquefied nitrogen (- 196º C), it still has the prolongation.
Few other materials can reach to this performance.
8. Non-toxic and clean property, UHMW-PE, which is the material that Food and Drug Administration (FDA) and United States Department of Agriculture (ASDA) permit to apply in food and medicine fields.
| Property | Item No. | Unit | Value | |
| Mechanical Properties | 1 | Density | g/cm3 | 0.94-0.96 |
| 2 | average molecular weight | g/mol | More than 9.0 million | |
| 3 | Tensile strength (23ºCin air) | MPa | 22 | |
| 4 | Breaking strength | MPa | 42 | |
| 5 | Tensile strain at break | % | 600 | |
| 6 | Charpy impact strength (notched) | mJ/mm 2 | No break | |
| 7 | Ball indentation hardness | N/mm 2 | 42 | |
| 8 | Shore D hardness | — | D65 | |
| 9 | Abrading(sand slurry experiment) | — | 100 | |
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| Material: | PE |
|---|---|
| Size: | According to Drawing or Sample |
| Color: | White, Black, Green, Yellow, Blue, Red |
| Tooling: | CNC Lathe |
| Dentity: | 0.98 |
| Shape: | Tube, Sheet, Rod, Gear, Pulley etc. |
| Customization: |
Available
| Customized Request |
|---|
Are there different materials used for manufacturing small pulleys, and why?
Yes, there are different materials used for manufacturing small pulleys, and the choice of material depends on various factors such as the application, operating conditions, required strength, and durability. Here is a detailed explanation of the different materials used for manufacturing small pulleys and the reasons behind their selection:
1. Metal Alloys:
– Metal alloys such as steel, aluminum, and stainless steel are commonly used for manufacturing small pulleys. These materials offer excellent strength, durability, and resistance to wear. Steel pulleys are known for their high load-bearing capacity and are suitable for heavy-duty applications. Aluminum pulleys are lightweight and corrosion-resistant, making them ideal for applications where weight reduction is important. Stainless steel pulleys are resistant to corrosion and can withstand harsh environments, making them suitable for outdoor or marine applications.
2. Plastics:
– Plastics like nylon, acetal, and polyurethane are widely used for manufacturing small pulleys. Plastic pulleys are lightweight, corrosion-resistant, and have low friction properties. They are suitable for applications where noise reduction is important, as they produce less noise compared to metal pulleys. Plastics also offer good resistance to chemicals and moisture, making them suitable for various industries, including food processing and pharmaceuticals.
3. Ceramic:
– Ceramic pulleys are used in specialized applications that require high temperature resistance, excellent wear resistance, and low thermal expansion. Ceramic materials such as zirconia and silicon nitride are lightweight, corrosion-resistant, and can withstand extreme temperatures. They are commonly used in industries such as aerospace, automotive, and high-temperature manufacturing processes.
4. Composites:
– Composite materials, such as carbon fiber reinforced polymers (CFRP), are increasingly being used for manufacturing small pulleys. CFRP pulleys offer high strength-to-weight ratio, excellent fatigue resistance, and low thermal expansion. They are commonly used in industries where weight reduction, high performance, and precision are critical, such as aerospace, motorsports, and robotics.
5. Brass and Bronze:
– Brass and bronze are used for manufacturing small pulleys in applications where corrosion resistance and aesthetic appeal are important. Brass pulleys are known for their excellent electrical conductivity and are commonly used in electrical and electronic devices. Bronze pulleys offer good corrosion resistance, high strength, and are suitable for applications involving high loads and harsh environments.
The choice of material for small pulleys depends on factors such as the required strength, durability, weight, corrosion resistance, operating temperature, and specific application requirements. Manufacturers select materials that offer the best combination of properties to ensure optimal performance and longevity of the pulleys in their intended applications.
How does the size and diameter of a small pulley affect its performance?
The size and diameter of a small pulley have a significant impact on its performance and functionality within a mechanical system. The dimensions of a small pulley influence various aspects, including power transmission, speed ratios, mechanical advantage, belt tension, and overall system efficiency. Here is a detailed explanation of how the size and diameter of a small pulley affect its performance:
1. Power Transmission:
– The size and diameter of a small pulley directly affect its power transmission capabilities. Larger pulleys have a greater circumference, which allows them to engage a larger portion of the belt or cable. This increased contact area improves the grip between the pulley and the belt, enabling higher power transmission capacity. Smaller pulleys, on the other hand, have a smaller circumference and are suitable for applications requiring lower power transmission.
2. Speed Ratios:
– The size and diameter of a small pulley play a crucial role in determining the speed ratios between the driving and driven components. By utilizing pulleys of different sizes, the rotational speed can be increased or decreased. Larger pulleys on the driving side and smaller pulleys on the driven side result in a speed reduction, while the opposite configuration leads to a speed increase. The selection of the pulley sizes allows for the adjustment of speed ratios to meet specific operational requirements.
3. Mechanical Advantage:
– The size and diameter of a small pulley influence the mechanical advantage it provides. Mechanical advantage refers to the amplification of force achieved by using a smaller driving pulley and a larger driven pulley. As the belt or cable wraps around a larger driven pulley, the force applied to the system is multiplied, making it easier to move or lift heavy loads. The choice of pulley sizes determines the mechanical advantage achieved, allowing for efficient load handling.
4. Belt Tension:
– The size and diameter of a small pulley affect the tension of the belt or cable. Larger pulleys require a greater belt tension to maintain optimal power transmission and prevent slippage. Smaller pulleys, on the other hand, require less tension due to their reduced circumference. Proper belt tension is crucial for ensuring reliable power transmission and minimizing energy losses. The selection of pulley sizes should consider the desired belt tension for the specific application.
5. System Efficiency:
– The size and diameter of a small pulley can impact the overall efficiency of the mechanical system. Smaller pulleys generally require less energy to rotate due to their reduced mass and inertia. This results in lower energy losses and improved system efficiency. Additionally, the correct selection of pulley sizes ensures optimal power transmission, minimizing frictional losses and maximizing the transfer of mechanical energy.
6. Load Capacity:
– The size and diameter of a small pulley influence its load-carrying capacity. Larger pulleys with larger diameters can withstand higher loads due to their increased contact area and grip on the belt or cable. Smaller pulleys, while more compact, have a reduced load capacity. The selection of pulley sizes should consider the anticipated load requirements to ensure safe and reliable operation.
7. Belt or Cable Lifespan:
– The size and diameter of a small pulley can impact the lifespan of the belt or cable. Excessive bending or flexing around small pulleys can subject the belt or cable to increased stress and wear. Larger pulleys, with their larger diameters, result in gentler bending angles and reduced stress on the belt or cable. This can prolong the lifespan of the belt or cable and reduce the frequency of maintenance or replacement.
It is crucial to carefully consider the size and diameter of a small pulley in relation to the specific application requirements. Factors such as power transmission, speed ratios, mechanical advantage, belt tension, system efficiency, load capacity, and belt or cable lifespan should be taken into account to ensure optimal performance and reliability of the mechanical system.
In which machinery and systems are small pulleys commonly used?
Small pulleys find widespread usage in a variety of machinery and systems across different industries. Their compact size, versatility, and ability to achieve higher speed ratios make them suitable for numerous applications. Here are some machinery and systems where small pulleys are commonly used:
1. Handheld Power Tools:
– Small pulleys are frequently employed in handheld power tools such as drills, sanders, and grinders. They are integral components in the motor drive systems of these tools, enabling the transfer of power from the motor to the tool head. Small pulleys help achieve the desired speed and torque conversions necessary for different tasks.
2. Robotics and Automation:
– Small pulleys play a vital role in robotics and automation systems. They are used in robot joints, actuators, and grippers, facilitating precise motion control. Small pulleys contribute to the smooth and accurate movement of robots, allowing them to perform various tasks with precision and efficiency.
3. Conveyor Systems:
– Small pulleys are commonly found in conveyor systems used in industries such as manufacturing, logistics, and mining. They are utilized in the pulley assemblies of belt conveyors, where they help drive the belt and facilitate material transportation. Small pulleys allow for effective power transmission and precise control of conveyor belts.
4. Printing and Paper Handling Equipment:
– Small pulleys are extensively used in printing presses, copiers, and paper handling equipment. They assist in driving paper feed mechanisms, controlling tension, and ensuring precise movement of paper or other printable media. Small pulleys contribute to the smooth operation and accurate registration of printed materials.
5. Medical Equipment:
– Small pulleys are essential components in various medical equipment and devices. They are used in surgical instruments, diagnostic machines, and rehabilitation equipment. Small pulleys enable controlled movement, precise adjustments, and accurate positioning, contributing to the effectiveness of medical procedures and therapies.
6. Automotive Systems:
– Small pulleys have widespread usage in automotive systems. They can be found in engine components such as the timing belt system, serpentine belt system, and accessory drive systems. Small pulleys help ensure proper synchronization of engine components, drive auxiliary systems, and transfer power efficiently within the vehicle.
7. Textile Machinery:
– Small pulleys are integral to various textile machinery, including sewing machines, weaving looms, and knitting machines. They assist in controlling fabric feed, driving moving parts, and enabling precise tension adjustments. Small pulleys contribute to the smooth operation and accurate fabric handling in textile manufacturing processes.
8. HVAC Systems:
– Small pulleys are used in heating, ventilation, and air conditioning (HVAC) systems. They can be found in fans, blowers, and air handling units, where they help drive the rotating components and ensure efficient airflow. Small pulleys contribute to the performance and reliability of HVAC systems.
9. Laboratory Equipment:
– Small pulleys are utilized in various laboratory equipment, such as centrifuges, mixers, and analytical instruments. They assist in achieving precise rotational speeds, facilitating sample processing and analysis. Small pulleys contribute to the accurate and controlled operation of laboratory equipment.
These are just a few examples of the machinery and systems where small pulleys are commonly used. Their compact size, versatility, and ability to provide precise motion control make them indispensable components in a wide range of applications across industries.
editor by CX
2024-02-06