To map hobbing processing 0.4/0.5/0.6/small gear mold plastic rack and pinion gears Metal powder metallurgy parts machine gear
Advantages of metal gears
Metal gears have good durability, high transmission efficiency, good wear resistance, no frictional wear with bearings and other parts; internal structure is easy to control, reducing transmission system failure rate; strength can reach higher standards than commonly used plastic gears; higher surface hardness requirements; have a larger transmission ratio, more flexibility in use; can withstand greater loads, higher transmission efficiency.
So why should customers prefer innovative plastic gears for their machines rather than metal classics? Below we illustrate the characteristics and advantages that distinguish our vast production.
The characteristics of plastic gears compared to metal ones
The specific weight of plastic is almost 6 times lower than that of steel; this translates into a lower weight of the component and therefore of the entire application which affects performance and consumption;
Reduction of the transmission of vibrations:
On a mechanical level, plastic gears, compared to metal ones, have the ability to absorb vibrations. This is due to the intrinsic nature of technopolymers and plastics in general, which makes possible to dampen noise and therefore reduce the transmission of vibrations;
The molecular structure of the plastic guarantees such a low friction and wear coefficient that in some cases makes lubrication superfluous;
Resistance to high temperatures and chemical agents:
The evolution of technopolymers and plastic in general allows the use of our transmission elements in applications requiring high temperatures (up to 250°) and/or operating in chemically aggressive environments.
Reduction of machinery management costs:
Choosing the thermoplastic gears produced by Stagnoli means deciding for a durable and performing element, which requires not only less maintenance on the machinery, but also the elimination of a subsequent assembly phase of the components with an obvious reduction in time and costs.
USE OF PLASTIC GEARS: ADVANTAGES AND BENEFITS
So why prefer a polymer gear to a metal one? The advantages of this choice are all borne by the performance of the machinery, to optimise production times and costs:
Significantly decreased noise,Low weight for the benefit of the machinery,No lubrication is required. Reduction of the friction coefficient,Elimination of rust formation
Do you want to speak with our team of technicians to design together the plastic gears that improve the performance of your machinery?
Feel free to contact us to learn more
DIN6, DIN7, DIN8, DIN10
Aluminum,Brass,SS C45 steel, Stainless steel 304, Plastic, Brass, 20CrMo,40Cr and so on
Hardening and Tempering, High Frequency Quenching,Carburizing etc
Blacking, Polishing, Anodization, Chrome Plating, Zinc Plating, Nickel Plating
Precision cutting machines. Lathes. Milling machines. Grinders. Automated mechanical systems.Automated warehousing systems.
Hobbing, Milling, Drilling, Shaving, Grinding
The main advantage of steel planetary gears is that they are able to carry larger torque loads. Although some of our sintered metal gears can carry a pretty large torque load as well, steel planetary gears are much more customizable and can still handle large torque loads.
1.According to the different strength and performance, we choose the steel with strong compression;
2.Using Germany professional software and our professional engineers to design products with more reasonable size and better performance;
3.We can customize our products according to the needs of our customers,Therefore, the optimal performance of the gear can be exerted under different working conditions;
4.Quality assurance in every step to ensure product quality is controllable.
Specializing in the production of “engineering plastic accessories” of high-tech enterprises, the company has a set of imported production equipment and CNC processing equipment, processing means advanced, strong technical force.
(Our factory has 100 sets of precision processing equipment, welcome to visit our factory!)
The factory covers an area of 10,000 square CHINAMFG Production equipment has the original American imported Haas CNC machining center, wire-electrode cutting, electrical discharge machine,Perforating machine, injection molding machine, CNC milling machine,CNC hobbing machine, CNC lathe, CNC milling machine, CNC lathe, CNC milling machine, grinding machine and other machinery and equipment.
OEM, ODM, Customization service,Reasonable and competitive price,Design for Manufacturability (DFM) analysis with every quote,Short Delivery Time.
Reliable mold expert 15+ years’ experience, Cooperated with many world famous brands for many years, Specialize in large and complex injection mold making, One-stop service from design to production.
Companies strictly enforce the ISO9001(2008)international quality certification system, the product quality conforms to the eu RoHS standard.
ZheJiang Engineering Plastics Industries Co., Ltd! We have the professional engineer teams and sales teams, and we have technology and experiences in engineering plastic industry for morethan 15 years! Our company is located in Xihu (West Lake) Dis. District, HangZhou City, China, where the logistics is developed! With the rich experiences and technology for manufacture, design,research and development ability, support personalized customization. We have full set of high efficiency producing equipment and advanced numerical control machines, such as: molding injection machines, CNC molding manufacture machines, fine carving machines, Horizontal lathes, milling machines.
We can customize all kinds of Engineering plastics products according to our customers’drawings or samples.
Our company is developing in the mode of quality for survival, brand for development and customer’s demand, welcome new and old customers to visit our factory for guidance.
Our Exhibition & CCTV Interview
Q1. Can samples be produced?
Q2. What is the accuracy of the products processed by the drawings?
A2. Different equipment has different accuracy, generally between 0.05-0.1
Q3. What craftsmanship do you have for processing accessories?
A3. According to different products, different processes are used, such as machining, extrusion, injection molding, etc.
Q4. What are your processing equipment?
A4. CNC machining center, CNC lathe, milling machine, engraving machine, injection molding machine, extruder, molding
Q5. Can you help assembling the product after it is made?
A5. It’s okay
Q6. What certifications or qualifications does your company have?
A6. Our company’s certificates are: ISO, ROHS, product patent certificates, etc.
Q7. Can injection products be surface treated? What are the surface treatments?
A7. It is ok. Surface treatment: spray paint, silk screen, electroplating, etc.
|Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural Machinery, Car
|Toothed Portion Shape:
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.
How do plastic gears handle lubrication and wear?
Plastic gears handle lubrication and wear differently compared to metal gears. Here’s a detailed explanation of their behavior:
1. Lubrication in Plastic Gears: Lubrication plays a crucial role in the performance and longevity of plastic gears. While metal gears often require continuous lubrication, plastic gears have different lubrication requirements due to their inherent properties. Here are some key considerations:
- Self-Lubrication: Some plastic materials, such as certain formulations of polyoxymethylene (POM), have inherent self-lubricating properties. These materials have a low coefficient of friction and can operate with minimal lubrication or even dry. Self-lubricating plastic gears can be advantageous in applications where the use of external lubricants is impractical or undesirable.
- Lubricant Compatibility: When external lubrication is necessary, it’s important to choose lubricants that are compatible with the specific plastic material used in the gears. Certain lubricants may degrade or adversely affect the mechanical properties of certain plastics. Consultation with lubricant manufacturers or experts can help identify suitable lubricants that won’t cause degradation or wear issues.
- Reduced Lubricant Requirements: Plastic gears generally have lower friction coefficients compared to metal gears. This reduced friction results in lower heat generation and less wear, which in turn reduces the demand for lubrication. Plastic gears may require less frequent lubricant replenishment or lower lubricant volumes, reducing maintenance requirements.
- Appropriate Lubricant Application: When applying lubricant to plastic gears, care should be taken to avoid excessive amounts that could lead to contamination or leakage. Lubricants should be applied in a controlled manner, ensuring they reach the critical contact points without excessive buildup or excess spreading beyond the gear surfaces.
2. Wear in Plastic Gears: Plastic gears exhibit different wear characteristics compared to metal gears. While metal gears typically experience gradual wear due to surface interactions, plastic gears may undergo different types of wear mechanisms, including:
- Adhesive Wear: Adhesive wear can occur in plastic gears when high loads or speeds cause localized melting or deformation at the gear teeth contact points. This can result in material transfer between gear surfaces and increased wear. Proper material selection, gear design optimization, and lubrication can help minimize adhesive wear in plastic gears.
- Abrasive Wear: Abrasive wear in plastic gears can be caused by the presence of abrasive particles or contaminants in the operating environment. These particles can act as abrasive agents, gradually wearing down the gear surfaces. Implementing effective filtration or sealing mechanisms, along with proper maintenance practices, can help reduce abrasive wear in plastic gears.
- Fatigue Wear: Plastic materials can exhibit fatigue wear under cyclic loading conditions. Repeated stress and deformation cycles can lead to crack initiation and propagation, ultimately resulting in gear failure. Proper gear design, material selection, and avoiding excessive loads or stress concentrations can help mitigate fatigue wear in plastic gears.
3. Gear Material Selection: The choice of plastic material for gears can significantly impact their lubrication and wear characteristics. Different plastic materials have varying coefficients of friction, wear resistance, and compatibility with lubricants. It’s important to select materials that offer suitable lubrication and wear properties for the specific application requirements.
4. Operational Considerations: Proper operating conditions and practices can also contribute to the effective handling of lubrication and wear in plastic gears. Avoiding excessive loads, controlling operating temperatures within the material’s limits, implementing effective maintenance procedures, and monitoring gear performance are essential for ensuring optimal gear operation and minimizing wear.
In summary, plastic gears can handle lubrication and wear differently compared to metal gears. They may exhibit self-lubricating properties, reduced lubricant requirements, and require careful consideration of lubricant compatibility. Plastic gears can experience different types of wear, including adhesive wear, abrasive wear, and fatigue wear. Proper material selection, gear design, lubrication practices, and operational considerations are crucial for ensuring efficient lubrication and minimizing wear in plastic gears.
Are there different types of plastic materials used for making gears?
Yes, there are different types of plastic materials used for making gears. Here’s a detailed explanation of some commonly used plastic materials in gear manufacturing:
- Acetal (Polyoxymethylene – POM): Acetal is a popular choice for gear applications due to its excellent strength, dimensional stability, low friction, and wear resistance. It has good machinability and can be easily molded into gears with precise tooth profiles. Acetal gears offer low noise operation and have good resistance to moisture and chemicals. They are commonly used in automotive, consumer electronics, and industrial applications.
- Polyamide (Nylon): Polyamide or nylon is another widely used plastic material for gears. It offers good mechanical properties, including high strength, toughness, and impact resistance. Nylon gears have low friction characteristics, good wear resistance, and self-lubricating properties. They are commonly used in applications such as automotive components, power tools, and industrial machinery.
- Polyethylene (PE): Polyethylene is a versatile plastic material that can be used for gear applications. It offers good chemical resistance, low friction, and excellent electrical insulation properties. While polyethylene gears may have lower strength compared to other plastic materials, they are suitable for low-load and low-speed applications, such as in light-duty machinery, toys, and household appliances.
- Polypropylene (PP): Polypropylene is a lightweight and cost-effective plastic material that finds applications in gear manufacturing. It offers good chemical resistance, low friction, and low moisture absorption. Polypropylene gears are commonly used in various industries, including automotive, consumer electronics, and household appliances.
- Polycarbonate (PC): Polycarbonate is a durable and impact-resistant plastic material used for gears that require high strength and toughness. It offers excellent dimensional stability, transparency, and good resistance to heat and chemicals. Polycarbonate gears are commonly used in applications such as automotive components, electrical equipment, and machinery.
- Polyphenylene Sulfide (PPS): Polyphenylene sulfide is a high-performance plastic material known for its excellent mechanical properties, including high strength, stiffness, and heat resistance. PPS gears offer low friction, good wear resistance, and dimensional stability. They are commonly used in demanding applications such as automotive transmissions, industrial machinery, and aerospace equipment.
These are just a few examples of the plastic materials used for making gears. The choice of plastic material depends on the specific requirements of the gear application, including load capacity, operating conditions, temperature range, chemical exposure, and cost considerations. It’s important to select a plastic material that offers the necessary combination of mechanical properties and performance characteristics for optimal gear performance.
editor by CX 2023-09-25