China Hot selling Plastic Injection Plastics Parts Custom Size Nylon POM Gears worm gearbox

Product Description

Plastics for friction and wear applications

Plastics such as UHMW, nylon, POM,HDPE,PEEK have low friction and outstanding wear characteristics, even in the absence of external lubrication. These materials are widely used in Plastic Machinery Components ;high speed packaging and conveying applications where wear resistance and smooth operation is essential.
UHMW is tough and durable. It performs well in applications such as chute liners and star wheels where low friction and excellent wear performance are required.
POM (sometimes referred to by the brand name Delrin ) is easy to machine into complex shapes. It has low friction and it has superior strength and stiffness compared with UHMW.
Nylon has outstanding wear characteristics, particularly when it is in contact with metal in dry environments. Nylon is often used for pulleys,wheels,sleeve,gears, block,fixture,bearings, and bushings
HDPE most widely used type of HDPE profiles,Washers and fixture on the market. It’s lightweight, strong, and long-lasting.

Applications for plastic materials include:
1.MC nylon pulleys
Looking for a one-of-a-kind pulley solution? round belt, v-belt, and flat belt pulleys can be made to order with Multiple grooves ; With or without hubs.

2. Nylon rollers chain sprockets or straight /helical gear
Nylon roller run more quietly and cause less chain wear than metal sprockets. Other benefits include corrosion resistance, lighter weight, greater impact resistance .The compressibility of plastic materials results in greater tooth deflection than found on a metallic sprocket. Greater tooth deflection means that several teeth will bear the load of the chain, increasing the overall load capacity of the sprocket to approximately the full working load of the chain.

3.HDPE,UHMW PE guide rails
Provides easier clean up;Meets FDA, USDA and pharmaceutical requirements;Can be used as a guide rail, belt support or wear strips;Custom profiles available on request ; Static dissipative and oil filled UHMW guide rails are available ; Fits commercially available clips and brackets

4.Other plastic spare parts ,such as Roll End Bearings,Washer,Machine guards,Bearings and bushings,Star wheels,Xihu (West Lake) Dis. rails,Flexible tubing,block,rollers,sheave,sealing ring,spacer,gasket etc

NING E-PLASTICS Capabilities Include:

  • CNC routing
  • CNC milling
  • CNC turning
  • Precision cutting
  • Polishing
  • Molding
  • Heat and line bending
  • Assembly
  • Close tolerances
  • Large and small parts

FAQ

1. Q: What color can you make?

A: Usually we can make the regular color, like green, blue, black, yellow, grey and so on. Or you can offer the pantone color number for reference to produce.

2.Q: What is your MOQ?

A: It depends on the drawing.

3. Q: What is your delivery time?

A: It depends on the volume, usually it is about 7 days.

4. Q: How can I get a sample?

A: Small size of sample are free, you only need to pay for the shipping cost, or you can provide your UPS, DHL, Fedex, TNT courier account to us. Customized size of sample should be charged.

5. Q: What is your payment ?

A:50% T/T in advance, balance before shipment. Other terms negotiable.

SEND US YOUR DRAWINGS!

 

 

 

Certification: CE
Color: Customized
Customized: Customized
Standard: International
Type: Bearing
Material: Plastic
Samples:
US$ 0/Piece
1 Piece(Min.Order)

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Request Sample

Customization:
Available

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Customized Request

plastic gear

What are the limitations of using plastic gears in industrial settings?

Using plastic gears in industrial settings has certain limitations. Here’s a detailed explanation of these limitations:

  • Lower Load Capacity: Plastic gears generally have lower load-bearing capacities compared to metal gears. They are more susceptible to deformation and wear under heavy loads or high torque conditions. This makes them less suitable for applications that require withstanding substantial forces or transmitting high power.
  • Temperature Sensitivity: Plastic gears have temperature limitations, and their performance can be affected by temperature variations. Some plastic materials may experience dimensional changes, loss of strength, or reduced stiffness at elevated temperatures. Additionally, high temperatures can accelerate wear and reduce the lifespan of plastic gears. Therefore, plastic gears may not be suitable for applications that involve high-temperature environments or extreme temperature fluctuations.
  • Environmental Sensitivity: Plastic gears can be sensitive to certain environmental conditions. Certain plastic materials may degrade or become brittle when exposed to specific chemicals, solvents, oils, or UV radiation. This restricts their use in applications where exposure to harsh chemicals, lubricants, or outdoor elements is common.
  • Wear and Abrasion: While plastic gears can offer good wear resistance, they are generally more prone to wear and abrasion compared to metal gears. Under heavy-load or high-speed conditions, the surface of plastic gears can wear down, leading to a decrease in performance and potential failure over time. Additional measures, such as incorporating reinforcements or using lubrication, may be necessary to mitigate wear in certain applications.
  • Dimensional Stability: Plastic materials can have lower dimensional stability compared to metals. They may experience creep, shrinkage, or expansion over time, which can affect the accuracy and reliability of gear operation, particularly in applications with tight tolerances or precise gear meshing requirements.
  • Impact Resistance: Plastic gears may have limited impact resistance compared to metal gears. They can be more susceptible to damage or fracture when subjected to sudden impact or shock loads. This makes them less suitable for applications with high impact or heavy-duty requirements.
  • Compatibility with Existing Systems: In some cases, replacing metal gears with plastic gears may require modifications to the existing system. Plastic gears may have different dimensions, mounting requirements, or gear ratios compared to metal gears, necessitating design changes or adaptations to accommodate the use of plastic gears.

Despite these limitations, plastic gears can still offer significant advantages in certain industrial settings, such as reduced weight, noise reduction, and cost-effectiveness. It’s crucial to carefully evaluate the specific application requirements and consider the trade-offs between the benefits and limitations of plastic gears when deciding whether they are suitable for a particular industrial setting.

plastic gear

What is the impact of temperature variations on plastic gears?

Temperature variations can have a significant impact on plastic gears. Here’s a detailed explanation of their effects:

1. Thermal Expansion: Plastic gears can experience thermal expansion or contraction with changes in temperature. Different types of plastics have varying coefficients of thermal expansion, meaning they expand or contract at different rates. This can result in dimensional changes, which may affect the gear’s meshing, clearance, and overall performance. It’s important to consider the thermal expansion characteristics of the specific plastic material used in the gear design.

2. Material Softening or Hardening: Plastic materials can exhibit changes in mechanical properties with temperature variations. In general, as temperature increases, plastic materials tend to soften and become more flexible, while at lower temperatures, they can become stiffer and more brittle. These changes can impact the gear’s load-bearing capacity, wear resistance, and overall durability. It’s crucial to select plastic materials that can maintain their mechanical integrity within the expected temperature range of the application.

3. Dimensional Stability: Plastic gears may experience dimensional changes or warping due to temperature fluctuations. Higher temperatures can cause plastic materials to deform, leading to misalignment, increased backlash, or reduced gear accuracy. Conversely, lower temperatures can cause contraction, resulting in tight clearances, increased friction, or gear binding. Proper design considerations, including material selection and gear geometry, can help mitigate the impact of temperature-induced dimensional changes.

4. Lubrication and Wear: Temperature variations can affect the lubrication properties of plastic gears. Higher temperatures can cause lubricants to degrade or become less effective, leading to increased friction, wear, and potential gear failure. Similarly, low temperatures can cause lubricants to thicken or solidify, hindering proper lubrication and increasing wear. Selecting lubricants suitable for the anticipated temperature range and periodic maintenance can help ensure proper lubrication and minimize wear on plastic gears.

5. Cold Flow and Creep: Some plastic materials, especially those with lower glass transition temperatures, may exhibit cold flow or creep at elevated temperatures. Cold flow refers to the gradual deformation or flow of plastic material under constant stress, while creep refers to the time-dependent deformation under a constant load. These phenomena can cause changes in gear geometry, tooth profile, or tooth engagement over time, potentially affecting gear performance and functionality. Understanding the material’s creep and cold flow characteristics is important when selecting plastic gears for applications exposed to temperature variations.

6. Impact on Lubricants and Seals: Temperature variations can also impact the performance of lubricants and seals used in gear systems. Extreme temperatures can cause lubricants to break down, lose viscosity, or leak from the gear assembly. Seals and gaskets may also be affected, leading to compromised gear housing integrity or increased friction. It’s crucial to consider temperature compatibility and select appropriate lubricants and seals that can withstand the anticipated temperature range.

In summary, temperature variations can significantly impact plastic gears by causing thermal expansion, material softening or hardening, dimensional changes, lubrication issues, cold flow or creep, and effects on lubricants and seals. Proper material selection, design considerations, and understanding the anticipated temperature range are essential to ensure the reliable and optimal performance of plastic gears in various applications.

plastic gear

What are plastic gears and how are they used?

Plastic gears are gear components made from various types of polymers or plastic materials. They offer unique properties and advantages compared to traditional metal gears. Here’s a detailed explanation of plastic gears and their applications:

  • Types of Plastic Materials: Plastic gears can be manufactured from different types of polymers, including thermoplastics such as acetal (polyoxymethylene – POM), nylon (polyamide – PA), polycarbonate (PC), and polyethylene (PE), as well as thermosetting plastics like phenolic resins. Each material has its own specific characteristics, such as strength, wear resistance, and temperature resistance, which make them suitable for different applications.
  • Advantages of Plastic Gears: Plastic gears offer several advantages over metal gears, including:
    • Lightweight: Plastic gears are lighter in weight compared to metal gears, which can be beneficial in applications where weight reduction is important.
    • Low Noise and Vibration: Plastic gears can provide quieter operation due to their inherent damping properties that reduce noise and vibration levels.
    • Corrosion Resistance: Certain plastic materials used in gear manufacturing exhibit excellent resistance to corrosion and chemicals, making them suitable for applications in corrosive environments.
    • Self-Lubrication: Some plastic materials have self-lubricating properties, reducing the need for external lubrication and simplifying maintenance.
    • Cost-Effective: Plastic gears can be more cost-effective compared to metal gears, especially in large-scale production, due to the lower material and manufacturing costs.
  • Applications of Plastic Gears: Plastic gears find applications in various industries and systems, including:
    • Automotive: Plastic gears are used in automotive systems such as windshield wipers, HVAC systems, seat adjusters, and electric power steering systems.
    • Consumer Electronics: Plastic gears are commonly found in consumer electronics like printers, scanners, cameras, and home appliances.
    • Medical Devices: Plastic gears are used in medical equipment and devices where weight reduction, low noise, and corrosion resistance are desired.
    • Toy Manufacturing: Plastic gears are extensively used in the production of toys, including mechanical toys, hobby models, and educational kits.
    • Office Equipment: Plastic gears are employed in office equipment like printers, copiers, and scanners, where quiet operation and cost-effectiveness are important.
    • Industrial Machinery: Plastic gears can be utilized in various industrial machinery applications, such as conveyor systems, packaging equipment, and textile machinery.

It’s important to note that while plastic gears offer unique advantages, they also have limitations. They may not be suitable for applications requiring extremely high torque, high temperatures, or where precise positioning is critical. The selection of plastic gears should consider the specific requirements of the application and the mechanical properties of the chosen plastic material.

China Hot selling Plastic Injection Plastics Parts Custom Size Nylon POM Gears worm gearboxChina Hot selling Plastic Injection Plastics Parts Custom Size Nylon POM Gears worm gearbox
editor by CX 2023-11-02