China Good quality Zlyj/Zsyj Series Electric Motor Speed Reduction Gearbox for Plastic Extruder Machine synchromesh gearbox

Product Description

ZLYJ/ZSYJ Electric Motor Reduction Gearbox for Extruder Machine

ZLYJ series gearbox is a high accuracy and hardened tooth surface transmission device,
Which is designed for single screw extruder with thrust block. The design of gearbox
Adopt JB/T9050.1-1999.

Main features:
1. The material of gear is high strength alloy steel through gear grinding processing after
Carburizing, quenching and heat treatment. It has high precision(6 level), high
Hardness(HRC54-62) and low transmission noise.
2. Gearbox equipped with thrust block with high bearing capacity, reliable performance
And can bear large axial thrust.
3. Gearbox equipped with forced feed lubrication and cooling system.
4. CHINAMFG series gearbox adopt 6 face processing, including horizontal installation and vertical installation.
5. High efficiency transmission, low noise and long time continuous operation.

1. Housing: Cast Iron or Steel Plate Welding
2. Gear Set: Hardened Helical Gear Pairs, Carburizing, Quenching, Grinding, Gear Hardness HRC54-62
3. Input Configurations:
Keyed CHINAMFG Shaft Input
4. Output Configurations:
Hollow Shaft Output

Our extruder gearboxes have 2 popular series for 2 types screw extruders:
ZLYJ/ZSYJ Series Extruder Gear Units for Single Screw Extruders
SZ Series Extruder Gear Units for Conical Twin Screw Extruders
For parameters of SZ series gearbox and other extruder gearboxes applications, please consult our sales representatives and engineers.
Gearbox Parameters

ZLYJ / ZSYJ Series
Models Ratio Center Height Output Bore Dia.(H8) Input Shaft Dia.(m6)
ZLYJ112 6.3~20 130mm Φ35 Φ28
ZLYJ133 6.3~20 140mm Φ38 Φ28
ZLYJ146 6.3~20 160mm Φ45 Φ32
ZLYJ173 6.3~20 170mm Φ50 Φ38
ZLYJ200 6.3~20 240mm Φ60 Φ45
ZLYJ225 6.3~20 250mm Φ70 Φ55
ZLYJ250 6.3~20 280mm Φ80 Φ60
ZLYJ280 6.3~20 300mm Φ90 Φ65
ZLYJ315 6.3~20 350mm Φ100 Φ75
ZLYJ330 6.3~20 350mm Φ110 Φ85
ZLYJ375 6.3~20 400mm Φ110 Φ85
ZLYJ420 6.3~20 460mm Φ120 Φ95
ZLYJ450 6.3~20 500mm Φ170 Φ100
ZLYJ630 6.3~20 630mm Φ180 Φ120
ZSYJ450 22.4~100 500mm Φ170 Φ75
ZSYJ560 22.4~100 580mm Φ160 Φ95
ZSYJ630 22.4~100 630mm Φ180 Φ100
SZ Series
Screw Diameter (mm) 35 45 50 55 65 80 92
Power (KW) 11 18.5 22 30 37 55 110
Output Speed (RPM) 47 45 38 38 39 39 40

1. More than 35 years experience in R&D and manufacturing, export gear motors & industrial gearboxes.
2. Standardization of the gearbox series
3. Strong design capability for large power & customized gearboxes.
4. High quality gearboxes and proven solutions provider.
5. Strict quality control process, stable quality.
6. Less than 2% of the quality complaints.
7. Modular design, short delivery time.
8. Quick response & professional services

Packing & shipping:
1 Prevent from damage.
2. As customers’ requirements, in perfect condition.
3. Delivery : As per contract delivery on time
4. Shipping : As per client request. We can accept CIF, Door to Door etc. or client authorized agent we supply all the necessary assistant.

1. How to choose a gearbox which meets our requirement?
You can refer to our catalogue to choose the gearbox or we can help to choose when you provide
the technical information of required output torque, output speed and motor parameter etc.
2. What information shall we give before placing a purchase order?
a) Type of the gearbox, ratio, input and output type, input flange, mounting position, and motor informationetc.
b) Housing color.
c) Purchase quantity.
d) Other special requirements.
3. Can we buy 1 pc of each item for quality testing?
Yes, we are glad to accept trial order for quality testing
4. How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock.
1. Running test process: each reducer will make running test for 1 hour each side.
2. We use advanced inspection center and measurement to control the size and quality of housing, gears and key parts.
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Application: Motor, Machinery
Function: Distribution Power, Clutch, Change Drive Torque, Change Drive Direction, Speed Changing, Speed Reduction, Speed Increase
Layout: Bevel
Hardness: Hardened Tooth Surface
Installation: Horizontal Type
Step: Double-Step


Customized Request

plastic gearbox

Design Considerations for Plastic Gearboxes vs. Metal Gearboxes

Designing plastic gearboxes involves unique considerations compared to metal gearboxes:

  • Material Properties: Plastic materials have different mechanical properties than metals, affecting factors like strength, wear resistance, and temperature stability.
  • Load Distribution: Plastic gear teeth may have different load distribution characteristics, influencing gear profile design and tooth thickness.
  • Lubrication: Plastic materials may require specialized lubrication or self-lubricating additives to reduce friction and wear.
  • Clearances and Tolerances: Clearances between plastic gear teeth may differ from those in metal gears due to variations in thermal expansion and material properties.
  • Heat Dissipation: Plastics have lower heat conductivity than metals, requiring efficient heat dissipation designs to prevent overheating.
  • Noise and Vibration: Plastic gearboxes may produce different noise and vibration levels, necessitating damping measures or gear profile adjustments.
  • Environmental Factors: Plastic gearboxes may be more susceptible to degradation from UV exposure, chemicals, or moisture, influencing material selection and housing design.

Considering these factors ensures that the design of plastic gearboxes meets the specific requirements and challenges posed by the material, enhancing their overall performance and reliability.

plastic gearbox

Consumer Products Benefiting from the Use of Plastic Gearboxes

Plastic gearboxes offer distinct advantages that make them suitable for various consumer products, enhancing functionality and user experience. Here are some consumer products that benefit from the use of plastic gearboxes:

  • Home Appliances: Plastic gearboxes are used in appliances like blenders, food processors, and coffee grinders, where their lightweight and corrosion-resistant properties contribute to efficient and safe operation.
  • Automated Toys: Many robotic and motorized toys utilize plastic gearboxes to achieve movement and interaction, providing entertainment and educational value to users.
  • Personal Electronics: Consumer electronics such as cameras, printers, and smartphones employ plastic gearboxes for various mechanisms, ensuring compact designs and smooth functionality.
  • Power Tools: Plastic gearboxes are integrated into power tools like drills and screwdrivers, enhancing the tools’ performance while maintaining manageable weight.
  • Health and Fitness Equipment: Exercise machines, massage devices, and personal care products often use plastic gearboxes to deliver controlled movement and adjustability.
  • Garden and Outdoor Products: Plastic gearboxes find use in products like lawnmowers, trimmers, and sprinklers, contributing to efficient outdoor maintenance tasks.
  • Audio and Visual Equipment: Plastic gearboxes are employed in devices like DVD players, projectors, and motorized screens, enabling precise movements and quiet operation.

Plastic gearboxes enhance the performance, reliability, and safety of these consumer products, making them more accessible and user-friendly for everyday use.

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 Good quality Zlyj/Zsyj Series Electric Motor Speed Reduction Gearbox for Plastic Extruder Machine   synchromesh gearbox	China Good quality Zlyj/Zsyj Series Electric Motor Speed Reduction Gearbox for Plastic Extruder Machine   synchromesh gearbox
editor by CX 2024-02-23