2-Stage Gearbox NMRV 50 – 110

The 2-Stage Gearbox NMRV 50 – 110 utilizes a worm gear mechanism, suitable for applications requiring speed reduction and torque increase. The frame size ranges from 50 to 110 mm, and the two-stage design ensures smooth, stable operation and saves installation space. The housing is made of aluminum alloy or cast iron, offering good load-bearing capacity and efficient heat dissipation. This gearbox is an ideal choice for conveyors, packaging machines, or automation systems requiring high torque and low speed.

General design of the 2-Stage Gearbox NMRV 50 – 110

This 2-stage gearbox features a compact, highly aesthetic design that is easy to install in confined spaces. The housing is made of solid die-cast aluminum alloy, helping to reduce weight, resist corrosion, withstand impacts well, and dissipate heat quickly, ensuring the equipment operates stably and continuously.

Inside the NMRV gearbox is a precision-machined worm and worm wheel system, ensuring smooth contact, reduced friction, and lower noise levels, helping the gearbox operate quietly, save energy, and extend service life.

Detailed structure of the 2-Stage Gearbox NMRV 50 – 110

The 2-stage NMRV gearbox is formed by connecting the output shaft of the NMRV 50 gearbox to the input shaft of the NMRV 110 gearbox via an intermediate coupling, helping to transmit concentric force, reduce vibration, and ensure stable torque. The main components include:

• Worm shaft: Made of hardened alloy steel, polished to reduce friction, enhance durability and service life.
• Worm wheel: Made of bronze or brass alloy, offering good wear resistance, smooth and stable power transmission.
• Housing: Solid die-cast aluminum, lightweight, corrosion-resistant, fast heat dissipation, suitable for harsh industrial environments.
• Intermediate coupling: Connects the two reduction stages, maintains concentricity, and reduces vibration during operation.
• Input shaft: Easily installed with an electric motor to form a gear motor, connected via a flange or flexible coupling.
• Output shaft: Heavy-duty high-strength steel, solid or hollow type, directly connected to conveyors, mixers, screw conveyors, or lifting mechanisms.

Technical specifications of the 2-Stage Gearbox NMRV 50 – 110

The specifications below help select the appropriate gearbox for the motor and application requirements.

NMRV 50 gearbox specifications

NMRV 50 is the first transmission stage, receiving power from the motor before transmitting it to the NMRV 110 stage.

Technical specifications

NMRV 110 gearbox specifications

NMRV 110 is the second transmission stage, continuing to reduce speed and increase torque before transmitting to the working equipment.

Technical specifications

Practical applications of the 2-Stage Gearbox NMRV 50 – 110

The 2-Stage Gearbox NMRV 50 – 110 is widely used in various industries.

• Conveyors, production lines, packaging and cargo handling systems.
• Agitators, mixers, and grinders in the food, chemical, and building materials industries.
• Fabric winders, textile machinery, CNC machines, and mechanical manufacturing.
• Lifting systems, screw conveyors, presses, and drive mechanisms requiring high traction and low rotational speed.

Installation guide for 2-stage NMRV gearbox

To install the 2-stage NMRV gearbox, follow these steps correctly:

Step 1: Check specifications and equipment condition

Compare the model, mounting type, flange dimensions, and shaft diameter of the gearbox with the motor. Also, check the housing body, shafts, and bolts to ensure the equipment is ready for installation.

Step 2: Assemble the gearbox with the motor

Insert the motor shaft into the gearbox shaft bore, align the flange evenly before tightening the bolts in sequence to create a secure connection.

Step 3: Check after completing assembly

Recheck all bolts, the concentricity between the motor and gearbox, and confirm that the mating surfaces are not loose or misaligned.

Step 4: Test run the system

Run the motor in no-load mode, monitor vibration and noise, and check the joint locations to promptly detect any abnormal signs or oil leaks.

In addition to this article, you can refer to the summary video on the Thanh Thai Motor channel to see more practical guides. At the same time, the gearbox video will provide information on the structure, installation process, and inspection methods for various gearbox lines before commissioning.