Gear Box

Your Leading Gear Box Supplier

We are committed to providing system solutions for the plastics industry and providing high-quality gear box. We have lot ready stock gear box for some commonly used IMM like Nissei, Sumitomo, Fanuc, Victor machines, which suitable for high Glass Fiber filled plastics processing with unique solutions to increase lifetime and performance.

Why Choose Us

Production Capacitie

We have two factories with about 9000 square meters construction area located in Zhoushan. Our production capacities can reach 1500 screw barrel sets monthly that enable us to deliver products to our customers in a short time.

Professional Production Equipment

3-axis CNC, 4-axis CNC, Screw Root Diameter Grinding Machine, Centrifugal Casted Furnace, Vacuum Quenching Furnace, Lathe, Hardness Tester, Metallographic Microscope.

Global Market

Our products were widely exported to Southeast Asia, Europe, Middle East, North America, South America and Africa.

Quality Assurance

The R&D, design and production of each of our product focuses on technological innovation and precision manufacturing, strictly controlled in accordance with the quality management system to ensure the performance and quality of each factory equipment.

Technical Parameter

High speed shaft rotation Speed	<1500RPM
Working Environment Temp	-40~45°C, with temperature below 0°C, should pre-heat lubrication oil to above 0°C
Output Speed	16-100 RPM
Output Torque	Max.4300 Nm
Motor Power	5.5-200 Kw
Tooth Surface Hardness	HRC54 to 62
Warranty	1 Year

Material of Gear Box

The gears are made of top-quality high-strength low carbon alloy steel after carbon penetrating,quench and teeth grinding.It has high hardness on teeth surface.large bearing ability,small noise,smooth operation and high driving efficiency. The material of the distribution box is nodular graphite casting iron and the gears have high-strength ground teeth,in whichsnake-shaped cooling water pipes are distributed.

Advantages of Gear Box

High Precision and Excellent Meshing Performance: The gears are engineered to deliver exceptional precision and optimal meshing performance, ensuring smooth operation and efficient power transfer.

Integrated Box Design: The gearbox features an integrated design for the housing, enhancing structural integrity and simplifying installation.

High-Quality Ductile Iron Construction: Constructed from high-quality ductile iron, the gearbox body provides durability and resistance to wear, making it suitable for demanding applications.

Strength and Aesthetic Appeal: The gearbox not only boasts high strength for reliable performance but also features an attractive design, adding visual appeal to the overall machinery setup.

Structure of Gear Box

Input shaft and output shaft: The input shaft receives the power from the motor, and the output shaft transfers the converted power to the screw through the gear set.

Gear set: The reduction ratio can be adjusted through the combination of gears with different module sizes and numbers of teeth.

Bearings

Bearings can bear the radial and axial forces generated when power is transmitted through the gear set.

Thrust/Tandem Bearing

The thrust or tandem bearing can bear the thrust load generated by the screw.

Housing

The housing is used to house the above parts, and it also has the function of supporting the motor, screw and barrel.

Application of Gear Box

01.

Pipe and Profile Extrusion

For manufacturing durable plastic pipes and profiles, Rootier gearboxes for single screw extruder machines enable smooth, efficient operations with reduced energy consumption and increased production capacity, supporting applications in construction, plumbing, and infrastructure.

02.

Sheet Extrusion

In producing plastic sheets used for thermoforming and packaging, our single screw extruder gearboxes maintain high stability under continuous operations, delivering superior dimensional accuracy and surface quality.

03.

Recycling and Pelletizing

The increasing emphasis on sustainability has made recycling a critical application for single screw extruders. In contaminated environments for various recycling production, Rootier gearboxes provide the durability needed to process post-consumer or industrial waste plastics into uniform pellets, ensuring long-term operational reliability.

04.

Blow Molding

Essential for creating hollow products such as bottles and containers, our gearboxes are designed to handle the high molding pressure, the specific torque and power requirements of blow molding applications.

Installation and Usage Requirements

●Before installation, check whether the gearbox and other components are in good condition, including inspecting gears, bearings, seals, etc., for any damage or abnormalities.
●During installation, adjust parameters such as axial, vertical, and parallel alignment according to the gearbox's design requirements to ensure precise positioning without affecting its operation.
●Pay attention to the correct positioning of the gearbox and connecting components to avoid improper installation that could lead to gearbox damage.
●Regularly replace the lubricating oil, selecting appropriate lubricants according to the gearbox's specifications to maintain good lubrication, reducing wear and damage.
●Periodically inspect the gearbox's seals and bearings to ensure their proper functioning, preventing oil leakage and abnormal noises.
●Regularly monitor the gearbox's operating conditions and temperature, promptly addressing any abnormalities.

OEM / ODM Cooperation Process

Requirements Collection

Communicate with customers to understand the equipment's application and the required specifications for input and output shafts.

Technical Design

Design the gearbox based on customer needs, including power, speeds, size, ratios, torque, and operating conditions.

CAD/CAM Design

Use computer software for gear calculations and simulations in the gearbox design.

Modify and Confirm

Make adjustments based on customer feedback until the design meets their requirements.

Final Specification & Drawings

Once confirmed, proceed with detailed drawings and production planning.

Quality Control

Implement strict quality checks to ensure gearbox performance and durability.

Packaging and Delivery

Package the gearbox securely and deliver it on time.

After-Sales Service

Provide timely assistance and address customer concerns during product usage.

Packaging and Delivery

Payment:	T/T, Trade Assurance, Paypal, Western Union,Alipay, Credit Card, L/C etc.
Safe Packing:	Wooden Case
Shipping:	Express, Air, Sea
Delivery Date:	7-15Days

Video

FAQ

Q: How long of the lifespan and service life of a gearbox?

A: The lifespan and service life of a gearbox depend on several factors, including the operating environment, working conditions, lubrication status, load, and frequency of use. If the gearbox operates in harsh environments, under severe working conditions, experiences heavy loads, and is frequently used, its lifespan and service life may be relatively shorter. Generally, with proper maintenance and normal usage, a gearbox's lifespan and service life can reach several years or even decades.

Q: How do you shop for an gearbox?

A: When shopping for a gearbox for a single screw extruder, consider the torque, speed, and extruder screw shaft size required in the extrusion machine. Examine the type of gears and bearings in the gearbox. Where possible, select helical gears and spherical ball bearings. Assess the type of lubrication system used in the gearbox. To reduce maintenance cost and time, opt for a semi-automated lubrication system that cools the gearbox during operation.

Q: What is the function of the gearbox in an extruder?

A: A gearbox in a plastic extruder serves multiple crucial functions: Speed Regulation: Plastic extrusion processes often require precise control over the rate at which the plastic material is pushed through the extruder. Gearboxes allow for speed regulation by adjusting the rotational speed of the extruder's screw.

Q: How does the gearbox work?

A: The gearbox is connected to the engine's crankshaft through a clutch, which allows the motor and gearbox to be temporarily disengaged when changing gears. Its primary role is to churn out the right amount of power and torque to the wheels at different speeds to achieve optimal performance and mileage.

Q: What is the ratio of extruder gearbox?

A: The single stage gearbox is offered in ratios from 4 to 6.3 with the torque range from T2 = 1400 Nm to 5200 Nm calculated at the standard ratio of 5:1. The two stage gearbox is offered in ratios from 10 to 18 with the torque range from T2 = 585 Nm to 18,000 Nm calculated at the standard ratio of 14 or 16:1.

We're well-known as one of the leading gear box manufacturers and suppliers in China. Please feel free to buy high quality gear box at competitive price from our factory. Contact us for more self-designed products.extrusion machine gearbox, ZLYJ gearbox, single screw plastic extruder gearbox