3-Stage Gearbox (2 UDL 2.2kW And 1 WPDO 120)

The 3-stage gearbox (2 UDL 2.2kW and 1 WPDO 120) is a gearbox line combined by mechanical speed variators (UDL) and a 2-stage gearbox to form a 3-stage gearbox, designed to provide wide speed control and strong pulling force in a compact drive assembly. Thanks to its sturdy structure, durable materials, and stable operation under heavy loads, the product is suitable for various industrial machinery requiring high reliability and long service life.

Overall Design of the 3-Stage Gearbox (2 UDL 2.2kW and 1 WPDO 120)

The outer casing of the 3-stage gearbox (2 UDL 2.2kW and 1 WPDO 120) is made of cast iron or solid cast aluminum, helping to protect the entire internal mechanism, withstand good forces, and reduce vibration during continuous operation. The input shafts, output shafts, flanges, and mounting brackets are reasonably arranged, supporting quick installation and connection with motors or other equipment. The heat dissipation slot, oil seal, and bearing systems are optimized to dissipate heat effectively, reduce friction, maintain smooth operation, and enhance the service life of the entire drive assembly.

Structure of the 3-Stage Gearbox (2 UDL and 1 WPDO)

The 3-stage gearbox (2 UDL 2.2kW and 1 WPDO 120) is formed by combining a 2.2kW 3Hp motor speed variator with a UDL 2.2kW – WPDO 120 2-stage gearbox, structured as follows:

Variator structure:

• Variable speed disc assembly: Cone discs combined with friction discs continuously adjust the output speed, operating smoothly and stably.
• Transmission shaft: Input shaft receives torque from the motor; output shaft transmits the precisely converted speed to the equipment.
• Handwheel adjustment mechanism: Knob or lever changes the pressing force on the discs, allowing speed increase or decrease according to operational requirements.
• Protective housing & bearings: Cast iron or aluminum housing protects the entire mechanism; bearings and oil seals reduce friction, limit vibration, and extend equipment life.

Structure of the UDL 2.2kW – WPDO 120 2-stage gearbox:

• Stage 1: UDL mechanical speed variator with cast iron or aluminum housing protecting the internal mechanism, bearings, and oil seals to reduce friction, limit vibration, and increase equipment life.
• Stage 2: Worm gearbox, specifically the WPDO 120 worm gearbox, reasonably arranged for easy installation and connection with motors and other industrial equipment.
• Uses a pair of friction discs and roller assemblies to change working positions, allowing smooth speed adjustment right from the motor shaft. The alloy housing with good heat dissipation helps this part operate stably.
• Receives drive from the first UDL, consisting of a concentrically arranged roller disc system, helping to expand the speed variation range and stabilize speed before entering the final stage.
• Includes flexible couplings between stages, intermediate shafts mounted on high-quality bearings, and a sturdy support base to maintain concentricity, reduce vibration, and enhance overall system durability.

Technical Specifications of the 3-Stage Gearbox (2 UDL 2.2kW and 1 WPDO 120)

To ensure the equipment operates at maximum efficiency and suits actual installation requirements in the workshop, you need to understand the standard technical specifications of this drive assembly. Below is a detailed specification table to help you comprehensively evaluate the working capability of the system.

Technical Specifications of UDL 2.2kW Motor Speed Variator

Please review the important indicators of the UDL 2.2kW model below to better understand the flexible speed changing capacity that the device offers.

Technical Specifications of WPDO 120 Worm Gearbox

Below are the technical specifications, shaft diameters, and flange dimensions of model 120 to help you accurately cross-reference for assembly.

Applications of the 3-Stage Gearbox (2 UDL 2.2kW and 1 WPDO 120)

This 3-stage gearbox is connected to an electric motor, more specifically a 3-phase electric motor – 3-phase electric motor 2.2kW 3Hp, with applications in industries such as:

• Ensure stable speed and strong pulling force for conveyors, conveyor troughs, and material feeding mechanisms.
• Applied in winches, lifting tables, or rotating mechanisms where strong, stable, and safe transmission is required during continuous operation.
• Suitable for assemblies requiring flexible speed adjustment such as sorting machines, feeders, and mechanical robots.
• Operate effectively in mixers, agitators, crushers, etc., requiring high torque and low speed.

How to Install the WPDO Gearbox and 2 UDL Mechanical Speed Variators to Form a 3-Stage Gearbox

Before installing the WPDO gearbox and 2 UDL mechanical speed variators to form a 3-stage gearbox, it is necessary to clean dirt and rust on the surfaces of the shafts, keyways, and flange holes. The technical standard assembly steps are as follows:

Step 1: Connect the 2 UDL mechanical speed variators together

• Positioning: Take the output shaft of the first UDL speed variator to connect with the input (flange hole) of the second UDL speed variator.
• Shaft connection: Place the key (size 8mm) into the correct keyway on the first UDL shaft, then carefully insert this shaft deeply into the shaft hole of the second UDL.
• Flange tightening: Align the two flanges flush against each other, ensuring perfect concentricity. Use bolts to fix the flanges and tighten evenly according to the “cross-tightening” principle so that the two devices are securely attached without distortion.

Step 2: Install the 2 UDL assembly into the WPDO gearbox

• Assembly: Similar to step 1, attach the key to the output shaft of the UDL assembly, then slowly push this shaft into the hollow core hole of the WPDO 120 gearbox.
• System fixation: When the flange of the second UDL has completely touched the flange of the WPDO 120, proceed to insert and tighten bolts. Pay attention to tightening the corners diagonally and evenly so that gravity is evenly distributed, protecting the internal bearings from jamming or misaligned compression.

The 3-stage gearbox (2 UDL 2.2kW and 1 WPDO 120) is a key drive equipment that helps optimize performance for industrial production lines. By integrating the UDL mechanical speed variator and WPDO 120 gearbox, the system not only provides powerful pulling force and high durability but also allows precise customization of operating speed according to practical needs.

Practical images will help you better understand the structure and operating capacity of the equipment. Therefore, please watch the gearbox video and summary video before making a decision.

Warranty, Shipping, and Commitment Policy at Thanh Thai Motor

When purchasing gearboxes at Thanh Thai Motor, you will receive benefits such as:

Warranty up to 24 months

Gearbox products at Thanh Thai Motor are covered by a genuine warranty for up to 24 months. Customers can be completely confident in using them with a clear, transparent, and prompt after-sales policy.

Nationwide Delivery

We support fast delivery to all provinces and cities nationwide. Wherever you are, products are guaranteed to arrive on time and safely.

Products meeting European quality standards with German technology

Gearboxes at Thanh Thai Motor are manufactured using advanced German technology, meeting European quality standards. Ensuring high durability and stable operation for extended periods.

Competitive prices, good discounts for dealers and bulk customers

Reasonable prices, many attractive offers for wholesale buyers and distribution agents. The more you buy, the higher the discount – optimizing profits for customers.

Full certification documents: CO, CQ,...

Each product comes with full Certificate of Origin (CO) and Certificate of Quality (CQ). This provides assurance for customers when using them in projects or constructions requiring technical documentation.

Contact for Purchase

Do you need advice on choosing the right gearbox for your needs? Contact Thanh Thai Motor immediately using the methods below:

• WhatsApp: +84966596219
• Email: codienthanhthai@gmail.com