China manufacturer Plastic Acetal Pulley Made by CNC Lathe pulley band

Product Description

Plastic Acetal pulley made by CNC lathe

POM(Polyformaldehyde) is a engineering plastics of non-side-chain, high density, high crystalline and linear polymer, which is praised “Plastic Steel”, and has comprehensive excellent performances, such as: Wear-resistance, high hardness, anti-impregnant, good rigidity (Tensile modulus of elasticity), chemical stability, isolation resistance and dimensional stability. POM has widely applied in Automobile industries, electronic and electric products, commodity, pipeline & fittings, exact apparatus and so on, which can be instead of the bronze, Zinc, tin and other metals.

Except POM-H is often copolymerized with ethylene oxide together, in order to avoid the melting of POM material in the high temperature. POM-H has the better performances than POM-C in its high crystalline, mechanical strength and rigidity. And POM-C has the better performances than POM-H in its low melting point, temperature stability, fluxion characteristic and machining capability.
Father more, POM-H+PTFE, which is made from the Delrin POM Resin that maxed Teflon fiber symmetrically, has the low co-efficient of frication, good lubrication, wear-resistance, non-creepage resistance.

Automobile industries: POM has a large application in car industries, because the mechanical parts made by POM, which has the advantages of high mechanical strength, high hardness, good wear-resistance, low co-efficient of friction, easy to maintain, reducing cost and so on, can be used in cars instead of coppery half stalk and planet gear. It not only saving copper materials, but also improving service life. At the engine fuel system, components for hose valves and case cover of radiator, cooling fluid’s standby case, water valve, oil box’ cover, pump impeller, shell of gasification machine and accelerator pedal and so on.

Electronic and electric Industries: Because of its lower power consuming, high dielectric strength and insulation resistance and electronic arc resistance, POM has widely applied in electronic and electric Industries, such as: Shell of electronic spanner, shell of electronic scissors, shell of coal drilling machine, handle of switch, parts also for phone, wireless recorder, video tape recorder, television, computer, electrograph, calculagraph, bracket of recorder tape and so on.

Agricultural machine: Part of manual sprayer, joint and transport part of seeder, parts of milk machine, shell of irrigation and drainage, valve, joint and bush of water and so on.

Other field:
Pharmacy & packing Machine: Transporting screw, planet gear, gear bar, chain wheel and cushion bar and so on.
Construction industries: Water tap, window frame, wash pot, water tank, pulley for portiere, shell of water meter and tie-in of water pipe.

Property Item No. Unit POM-C POM-H POM-H+PTFE
Mechanical Properties 1 Density g/cm3 1.41 1.43 1.50
2  Water absorption(23ºCin air) % 0.20 0.20 0.17
3 Tensile strength MPa 68 78 55
4 Tensile strain at break % 35 35 10
5 Compressive stress(at 2%nominal strain) MPa 35 40 37
6 Charpy impact strength (unnotched) KJ/m 2 ≥150 ≥200 ≥30
7 Charpy impact strength (notched) KJ/m 2 7 10 3
8 Tensile modulus of elasticity MPa 3100 3600 3200
9 Ball indentation hardness N/mm 2 140 160 140
  10 Rockwell hardness M84 M88 M84

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Material: POM
Size: According to Drawing or Sample
Color: Black, White
Transport Package: Packing in Paper Carton
Specification: RoHS
Trademark: Guangzhou Engineering Plastics


Customized Request

plastic pulley

Are there any limitations or temperature constraints with plastic pulleys?

Yes, there are certain limitations and temperature constraints associated with plastic pulleys. Here’s a detailed explanation:

1. Load Capacity:

Plastic pulleys have a limited load capacity compared to their metal counterparts. While they are suitable for many light to moderate load applications, they may not be suitable for heavy-duty or high-load scenarios. Exceeding the recommended load capacity of plastic pulleys can lead to deformation, premature wear, or failure of the pulley, compromising the overall performance and reliability of the system.

2. Temperature Sensitivity:

Plastic pulleys can be sensitive to temperature variations. Extreme heat or cold can affect the mechanical properties of the plastic material, leading to dimensional changes, reduced strength, or increased brittleness. High temperatures can cause the pulleys to deform or soften, while low temperatures can make them more prone to cracking or breakage. Therefore, it is important to consider the temperature range in which plastic pulleys will be operating and choose materials that can withstand the specific environmental conditions.

3. Thermal Expansion:

Plastic pulleys can exhibit thermal expansion, meaning they may expand or contract with changes in temperature. This can affect the precision and alignment of the pulley system. In applications where precise positioning or tight tolerances are required, thermal expansion of the plastic pulleys should be taken into account to ensure proper functioning of the system. Compensation techniques, such as using adjustable mounting brackets or incorporating thermal expansion calculations, may be necessary to maintain alignment under varying temperature conditions.

4. Chemical Compatibility:

Some plastic materials used in pulleys may not be compatible with certain chemicals or solvents. Exposure to chemicals that are incompatible with the plastic material can lead to degradation, discoloration, or weakening of the pulleys. It is important to consider the chemical environment in which the plastic pulleys will be used and select materials that are resistant to the specific chemicals present in that environment.

5. UV and Weather Resistance:

Not all plastic materials used in pulleys have excellent resistance to ultraviolet (UV) radiation or outdoor weather conditions. Prolonged exposure to sunlight or harsh weather elements can cause degradation, discoloration, or loss of mechanical properties in certain plastics. If plastic pulleys are intended for outdoor or UV-exposed applications, it is crucial to choose materials that are UV-resistant and weather-resistant to ensure long-term durability and performance.

6. Static Electricity:

Some plastic pulleys can generate static electricity during operation. This can be a concern in certain applications where static discharge can interfere with sensitive electronic components or create safety hazards in potentially explosive environments. In such cases, anti-static or conductive plastic materials may need to be used to mitigate the risks associated with static electricity generation.

In summary, plastic pulleys have limitations and temperature constraints that should be considered during their selection and application. These limitations include load capacity, temperature sensitivity, thermal expansion, chemical compatibility, UV and weather resistance, and static electricity generation. By understanding and addressing these constraints, it is possible to use plastic pulleys effectively and ensure their optimal performance and longevity in various mechanical systems.

plastic pulley

What maintenance procedures are necessary to ensure the reliability of plastic pulleys?

To ensure the reliability of plastic pulleys, several maintenance procedures should be followed. Here’s a detailed explanation:

1. Regular Inspection:

Regular inspection is crucial for identifying any signs of wear, damage, or degradation in plastic pulleys. Inspect the pulleys periodically to check for cracks, excessive wear, or any other visible issues. Pay attention to the pulley’s grooves, edges, and mounting points. If any damage is detected, the pulley should be replaced promptly to prevent unexpected failures or accidents.

2. Lubrication:

Appropriate lubrication is important to ensure the smooth operation and longevity of plastic pulleys. Follow the manufacturer’s recommendations for lubrication intervals and the type of lubricant to be used. Apply lubricant to the pulley’s bearings or bushings as specified. Proper lubrication reduces friction, minimizes wear, and helps maintain the pulleys’ performance and reliability.

3. Cleaning:

Clean plastic pulleys regularly to remove dirt, dust, or debris that may accumulate on the surface. Use a soft brush or cloth to gently clean the pulleys, ensuring that no abrasive materials or harsh chemicals are used that could damage the plastic material. Clean pulleys help prevent contaminants from entering the system and interfering with the pulley’s movement or the overall performance of the equipment.

4. Belt or Chain Tension:

Check and adjust the tension of belts or chains connected to plastic pulleys. Proper tension is crucial for efficient power transmission and to prevent slippage. Follow the manufacturer’s guidelines to determine the correct tension for the specific application. Ensure that the belts or chains are not too loose or too tight, as both conditions can lead to premature wear or failure of the pulleys.

5. Alignment:

Proper alignment of plastic pulleys is essential for their reliable operation. Misalignment can cause excessive vibrations, premature wear, and increased stress on the pulleys and associated components. Regularly check the alignment of the pulleys and make any necessary adjustments. Follow the manufacturer’s recommendations for alignment procedures to ensure optimal performance and longevity of the pulleys.

6. Environmental Considerations:

Consider the environmental conditions in which the plastic pulleys are operating. Extreme temperatures, exposure to chemicals, or other harsh conditions can impact the pulley’s reliability and lifespan. If the environment poses specific challenges, choose plastic pulleys that are resistant to the prevailing conditions. For example, select pulleys made from materials with high-temperature resistance or chemical resistance, as required.

7. Manufacturer’s Guidelines:

Always refer to the manufacturer’s guidelines and recommendations for maintenance procedures specific to the plastic pulleys being used. Manufacturers often provide detailed instructions on inspection, lubrication, cleaning, and other maintenance tasks. Adhering to these guidelines ensures that the maintenance procedures are carried out correctly and in accordance with the manufacturer’s specifications, maximizing the reliability and lifespan of the plastic pulleys.

By following these maintenance procedures, operators can ensure the reliability and longevity of plastic pulleys. Regular inspection, proper lubrication, cleaning, belt or chain tensioning, alignment, considering environmental factors, and adhering to manufacturer’s guidelines are all vital in maintaining the optimal performance of plastic pulleys in various industrial applications.

plastic pulley

In which industries and applications are plastic pulleys commonly used?

Plastic pulleys find widespread use in various industries and applications due to their unique characteristics and advantages. Here’s a detailed explanation of the industries and applications where plastic pulleys are commonly used:

1. Automotive Industry:

Plastic pulleys are extensively used in the automotive industry. They can be found in engine systems, timing belt systems, accessory drives, power steering systems, and HVAC (Heating, Ventilation, and Air Conditioning) systems. Plastic pulleys offer lightweight solutions, noise reduction, and resistance to corrosion and chemicals, making them suitable for automotive applications.

2. Consumer Electronics:

Plastic pulleys play a crucial role in various consumer electronic devices. They are used in printers, scanners, photocopiers, DVD players, and other office equipment. Plastic pulleys provide noise reduction, low friction, and design flexibility, which are desirable features in consumer electronics where quiet operation and precise movement are important.

3. Medical Equipment:

Plastic pulleys are commonly employed in medical equipment and devices. They are used in diagnostic instruments, laboratory equipment, surgical tools, and patient handling systems. Plastic pulleys offer lightweight construction, corrosion resistance, and design flexibility, making them suitable for medical applications where cleanliness, precision, and ease of use are critical.

4. Packaging and Material Handling:

Plastic pulleys find extensive use in packaging and material handling applications. They are utilized in conveyor systems, sorting machines, printing and labeling equipment, and packaging machinery. Plastic pulleys provide low friction, noise reduction, and resistance to corrosion and wear, making them well-suited for efficient and reliable material handling and packaging processes.

5. Recreational Equipment:

Plastic pulleys are commonly found in recreational equipment and devices. They are used in fitness machines, bicycles, kayaks, sailboats, and other sports and leisure equipment. Plastic pulleys offer lightweight construction, low friction, and resistance to corrosion, making them suitable for recreational applications where performance, durability, and ease of use are important.

6. HVAC Systems:

Plastic pulleys are utilized in heating, ventilation, and air conditioning (HVAC) systems. They are used in fan assemblies, blower motors, and air handling units. Plastic pulleys provide noise reduction, low friction, and resistance to corrosion and moisture, making them suitable for HVAC applications where quiet operation, energy efficiency, and durability are desired.

7. Industrial Machinery:

Plastic pulleys are commonly employed in various industrial machinery and equipment. They are used in conveyors, packaging machines, textile machinery, printing presses, and automation systems. Plastic pulleys offer low friction, design flexibility, and resistance to corrosion and chemicals, making them suitable for industrial applications where reliable operation, efficiency, and durability are essential.

8. Agricultural Equipment:

Plastic pulleys find applications in agricultural machinery and equipment. They are used in crop harvesting machines, irrigation systems, grain handling equipment, and livestock feeding systems. Plastic pulleys offer lightweight construction, low friction, and resistance to corrosion and chemicals, making them suitable for agricultural applications where efficiency, reliability, and resistance to harsh environments are required.

In summary, plastic pulleys are commonly used in industries and applications such as automotive, consumer electronics, medical equipment, packaging and material handling, recreational equipment, HVAC systems, industrial machinery, and agricultural equipment. Their unique features and advantages make them versatile components in various sectors, providing lightweight, corrosion-resistant, low-friction, and noise-reducing solutions.

China manufacturer Plastic Acetal Pulley Made by CNC Lathe   pulley band	China manufacturer Plastic Acetal Pulley Made by CNC Lathe   pulley band
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