2-Stage NMRV Gearbox 75 – 90

The 2-Stage NMRV Gearbox 75 – 90 is a gearbox line combined by two NMRV gearboxes to form a powerful drive gearbox assembly with extremely large speed reduction capability and superior torque force coefficients.

With a large gear ratio (from 1/150 to 1/10,000), this 2-stage gearbox is rated as an efficient drive solution, suitable for applications requiring high precision, smooth operation, and long service life.

General design of the 2-Stage NMRV Gearbox 75 – 90

The 2-stage NMRV gearbox is designed in a right-angle worm and worm gear form, providing stable transmission capability and high efficiency. The housing is made of monolithic die-cast aluminum alloy, helping to reduce weight, increase heat dissipation capability, and resist corrosion, especially suitable for harsh industrial environments.

Inside, the worm wheel and worm shaft are high-precision machined using CNC technology, ensuring perfect meshing, reducing noise and friction during operation. The compact, sturdy design helps the 2-Stage NMRV Gearbox 75 – 90 easily install in various positions even in tight spaces while still ensuring high safety and mechanical durability.

Detailed structure of the 2-Stage NMRV Gearbox 75 – 90

The 2-Stage NMRV Gearbox 75 – 90 is composed of the NMRV 75 gearbox directly connected to the NMRV 90 gearbox through an intermediate NMRV coupling component, the device includes the following parts:

• Worm shaft: Machined from hardened alloy steel, the surface is polished to help reduce friction, increase load-bearing capacity and working life.
• Worm wheel: Produced from high-grade bronze or brass alloy, capable of wear resistance, smooth and stable transmission.
• Housing: Made of high-quality thick aluminum housing material, helping to reduce weight, prevent rust, dissipate heat well and easily clean and maintain.
• Intermediate NMRV coupling: Used to link two transmission stages, ensuring stable, concentric torque transmission and limiting vibration during operation.
• Input shaft: Designed with a hollow shaft mounting style, directly installed with an electric motor.
• Output shaft: Manufactured from high-strength steel, solid or hollow, easily connected with conveyors, mixers, screw conveyors, or the rotation mechanism of industrial machinery.

Technical specifications of the 2-Stage NMRV Gearbox 75 – 90

The technical specifications below help determine dimensions, connectivity capabilities, and select a gearbox suitable for each application.

NMRV 75 Gearbox

NMRV 75 is the first transmission stage, receiving power from the motor and transmitting it to the NMRV 90 stage.

Technical specifications

NMRV 90 Gearbox

NMRV 90 is the second transmission stage, continuing to reduce speed and transmit torque to the output shaft.

Technical specifications

Practical applications of the 2-Stage NMRV Gearbox 75 – 90

Thanks to its flexibility and superior performance, the 2-Stage NMRV Gearbox 75 – 90 is widely applied in many industrial fields such:

• Conveyor lines, goods transport conveyors, automatic packaging machines.
• Applied in agitators, mixers, grinders, in food, chemical, and building material factories.
• Material mixing agitators, concrete machines, material production machines in industrial plants and factories.
• Applied in mining equipment, metal ore classifiers.

Installation guide for 2-stage NMRV gearbox

To install the 2-stage NMRV gearbox according to technical requirements, follow the steps below:

Step 1: Pre-installation inspection

Compare the model, gear ratio, mounting style, shaft diameter, and flange size of the gearbox with the motor. Check the bolt locations and external condition of the equipment before assembly.

Step 2: Connect the gearbox to the motor

Insert the motor shaft into the input shaft of the gearbox, align the flange so that the two contact surfaces are uniform. Then tighten the bolts in order to secure the transmission assembly.

Step 3: Check the assembly

Check the concentricity between the motor and gearbox, the tightness of the bolts, and the contact positions of the flange. Ensure the assembly is in the correct position before operation.

Step 4: Operational check

Run the system in no-load mode for a short time, monitor noise, vibration, and check joint locations to 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 content on the installation and equipment testing process. At the same time, the gearbox video will provide instructions on structure, assembly methods, and inspection steps before putting the equipment into use.

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