China manufacturer Extruder Gear Box planetary gearbox

Product Description

Polytek co-rotating twin-screw extruders are designed for maximum reliability, ease-of-use and flexibility. We offer turn-key solution for all types of material compounding applications.

we are proud to introduce our PTH series extruder which equiped with high torque and high speed gear box, desinged with specific torque of

12Nm/cm3 to achieve high screw filling rate, which results in a decrease of melt temperature, thus improving compound quality.

what is twin screw extruder 

Co-rotating twin-screw extruder : Due to the co-rotating twin-screw has the opposite speed at the meshing point, 1 screw pulls the material into the meshing gap, and the other screw pushes the material out of the gap, resulting in material from 1 screw turns to the other screw and advances in a “∞” shape. Since the gap of the meshing zone is small, the speed of the meshing screw and the groove are opposite in direction, so that the cutting speed is high, and the self-cleaning effect is good, that is, any accumulated material adhering to the screw can be scraped off, thereby The residence time of the material is very short, so the twin screw extruder is mainly used for compounding and pelletizing .

Polytek also have 2 stage extruder for PVC compound and high filler masterbatch extrusion.

Technical Data of PTH Extruder
 

Model Torque/Shaft(Nm) Screw Diameter(mm) Max.Screw Speed(RPM) Motor Power(Kw) Capacity(Kg)
PTH-20 40 22 600 5.5 15
PTH-25 110 25 900 22 90
PTH-35 320 36 900 75 280
PTH-50 890 51 900 200 800
PTH-65 1690 62 900 355 1400
PTH-75 2590 71 900 550 2200
PTH-96 5690 94 600 710 4000
PTH-135 7160 132 400 600 3500
PTH-165 14300 165 400 1200 5000

Construction :

The Applications of Co-rotating Twin Screw Extruder

1.Glass fiber reinforced, fuel barrier palletizing (For example PA6, PA66, PET, PBT, PP, and PC reinforced flame retardant)
2.Highly filled material granulation (For example PE, PP filled with 75%CaCo)
3.Granulation of heat-sensitive materials (For example PVC, XLPE cable material)
4.Intense color masterbatch (For example filled with 50% color powder)
5.Antistatic masterbatches, alloys, coloring, low-fill co-mingling granulation
6.Cable material granulation (For example sheathing material and insulation material)
7.XLPE pipe material granulation (For example masterbatches for hot water crosslinking)
8.Thermoset plastic compounding and extrusion (For example phenolic resin, epoxy resin, and powder coating)
9.Hot melt adhesive, PU reactive extrusion palletizing (For example EVA hot melt adhesive and polyurethane)
10.K resin, SBS de-volatile granulation
 

Spare parts and service, we are not only selling machine, but also our knowledge and service

Owe to rich theoretical knowledge and experience in compounding fifield, we can offer best solution to meet customer’s requirement, not only for local extruders. We can also provide standard parts of Coperion, Berstoff, JSW, Toshibar, Steer etc.

About Polytek
 

POLYTEK Intelligent Equipement Co., Ltd. is a committed in plastic extrusion and recycling technology R & D, to provide for customers compounding/plastic pipe/profile/sheet/board extrusion & waste plastic washing recycling machines, which will meet requirement of ISO 9001 and CE. With many patent technologies, we can provide customized solution for all kinds requirement, which will be stable, best performance, and competitive price .We have 3000m2 plant and over 30 employs, including a strong team of technical design and after sale service, which will insure the quick action to customer’s requirement.

Certification For PTH Extruders

More Equipment for various polymer compound

Air cooling conveyor Belt

twin screw extruder

Two stage extruder

Purchasing from CZPT is only the beginning of our relationship. We are committed to the success of our customers

and we support you and your equipment throughout the life of your investment. We provide expertise with preventative

maintenance plans, health and wellness checks, and training services so that you can focus on what you do best: sell your product.

After-sales Service: 24 Hours on Call
Warranty: 12 Months
Type: Twin Screw Extruder for Compouding
Plastic Processed: PP PE Pet PC ABS TPR TPE TPU TPV PVC
Product Type: Granulating Extruder
Feeding Mode: Multiple Feed

plastic gearbox

Environmental Durability of Plastic Gearboxes

Plastic gearboxes are designed to withstand varying environmental conditions, but their performance depends on factors such as:

  • Temperature: High-performance plastics can operate effectively across a wide temperature range, from extreme cold to elevated temperatures.
  • Moisture and Humidity: Some plastics are resistant to moisture and humidity, making them suitable for outdoor and wet environments.
  • Chemical Exposure: Certain plastics are chemically resistant, protecting gearboxes from exposure to oils, fuels, solvents, and corrosive substances.
  • UV Resistance: UV-stabilized plastics can prevent degradation and maintain mechanical properties when exposed to sunlight.
  • Impact and Vibration: Plastics with good impact resistance and vibration dampening properties can handle shocks and vibrations in industrial and outdoor settings.
  • Contaminants: Sealed designs and proper maintenance can prevent the ingress of dust, dirt, and contaminants that may affect performance.
  • Material Selection: Choosing the right plastic material based on the specific environmental conditions is crucial for ensuring durability.

By selecting suitable plastic materials, incorporating proper seals, and considering the environmental factors, plastic gearboxes can provide reliable and durable performance in a wide range of conditions.

plastic gearbox

Limitations of Maximum Torque Handling in Plastic Gearboxes

While plastic gearboxes offer numerous advantages, they do have limitations when it comes to handling maximum torque:

  • Material Strength: Plastic materials generally have lower tensile strength and fatigue resistance compared to metals. This can limit the amount of torque that plastic gearboxes can transmit before experiencing deformation or failure.
  • Size and Design: The size and design of plastic gear teeth play a significant role in torque handling. Smaller gear teeth with less surface area may struggle to withstand high torque loads without premature wear or damage.
  • Temperature Sensitivity: High temperatures can negatively impact the mechanical properties of plastics, potentially leading to a reduction in their torque-carrying capacity. Extreme temperature fluctuations may exacerbate this limitation.
  • Operating Conditions: The operating environment, such as exposure to harsh chemicals, abrasive particles, or excessive moisture, can affect the integrity of plastic gear materials and reduce their ability to handle high torque loads.
  • Application Type: Plastic gearboxes are better suited for applications with moderate torque requirements. High-torque applications, such as heavy industrial machinery, may exceed the capabilities of plastic gearboxes.

It’s important to consider the specific torque demands of an application and select an appropriate gearbox material accordingly. While plastic gearboxes are lightweight, cost-effective, and suitable for many applications, they may not be the ideal choice for extremely high-torque scenarios.

plastic gearbox

Types of Plastics Commonly Used in Manufacturing Plastic Gearboxes

Several types of plastics are commonly used in the manufacturing of plastic gearboxes, each offering specific properties and advantages:

  • Polyamide (Nylon): Nylon is a popular choice due to its excellent wear resistance, low friction, and good impact strength. It can handle moderate loads and is suitable for various applications.
  • Polyoxymethylene (Acetal): Acetal provides high stiffness, low friction, and good dimensional stability. It is often used for small gears and low-load applications.
  • Polyethylene (PE): PE offers low friction, good impact strength, and chemical resistance. It’s suitable for applications with light loads and low speeds.
  • Polycarbonate (PC): PC provides high impact resistance and transparency. It’s used in applications requiring good visibility and moderate load-bearing capacity.
  • Polyphenylene Sulfide (PPS): PPS offers high temperature resistance and chemical resistance. It’s suitable for applications in demanding environments.
  • Polyetheretherketone (PEEK): PEEK is a high-performance plastic with excellent temperature and chemical resistance. It’s used in high-temperature and harsh environments.

The choice of plastic depends on the specific requirements of the application, including load, speed, temperature, and environmental factors.

China manufacturer Extruder Gear Box   planetary gearbox	China manufacturer Extruder Gear Box   planetary gearbox
editor by CX 2023-09-05