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Gear Recucer and Gearbox

What Is Difference Between Gear reducer and Gearbox?

Recently, we have received a large number of inquiries about gearboxes and gear reducers. Motor products often seem abstract, especially to those who are new to the field of mechatronics. Therefore, in this article, Annie will integrate all the information about the gearbox and transmission for you.

In general, the only difference between a gear reducer and a gearbox is the terminology. This is because all reducers include a gearbox, which is an integral part of the reducer. However, not all reducers are gearboxes, and the gearboxes are closely connected to the reducers.

What Is Gear Reducer?

The gear reducer also known as the gear motor, is formed by the close combination of a motor and a gearbox. Its transmission structure combines a driving motor and a gearbox to achieve connection, transmission, reduction, and increasing torque. A gear motor is a compact electric motor, usually utilizing AC induction, permanent magnet DC or brushless DC technology, connected to an indivisible gear box. Its purpose is to meet the various requirements of the user, mainly by reducing the speed of the input motor, while increasing the torque to achieve the correct output speed.

What Are The Types of Reducter?

Depending to the stage of gear transmission, there are single-stage reducer and multi-stage reducer.

According to the different type of gear material, they can be divided into plastic reducer and metal reducer.

Regarding the type of driving, there are spur gear reducer, worm gear reducer and planetary gear reducer.

Considering the shape of the gear, there are cylindrical gear reducer, bevel gear reducer and bevel gear – cylindrical gear reducer.

According to the transmission form, it can be further divided into inline type, split type and coaxial reducer.

The Key Features of The Standard Gear Reducers

Spur gear reducer

Spur gear reducers are known for their compact size, high torque transmission and excellent performance. They are designed and manufactured based on modular combined systems, offering a wide range of motor combinations, installation options and structural solutions to meet a wide range of operating conditions and enhance mechatronics. Our Spur gear motor ranges as below:

Spur gearbox 1

Planetary gear reducer

The planetary gear box is characterized by compact structure, small backlash, high precision and superior transmission performance. They are energy efficient, have a wide deceleration range, and can deliver a lot of output torque. Long service life and can handle significant rated output torque.

Planetary gear box 1

Worm gear reducer

Worm gear reducers are known for their self-locking characteristics, allowing large reduction ratios and non-coaxial or non-coplanar input and output shafts. However, they typically have larger sizes, lower drive efficiency, and reduced accuracy.

Stepper gear reducer

Stepper gear reducers are known for their high-precision open-loop positioning capabilities. They have static locking function, simple control, long service life and high reliability.

Coreless gear reducer

Coreless gear reducer is characterized by energy saving and high energy conversion efficiency. They offer quick start and braking, quick response, and the ability to operate at variable speeds within the recommended operating range. They allow for sensitive speed adjustments and maintain stable and reliable operation with minimal speed fluctuations.

What Is Gearbox?

Gearbox, it is a group of gears and is wrapped in a housing. The name says about its structure – a box that wraps gears.

A gearbox functions like any gear system and is a relatively complex device used to synchronize speed and transfer torque between a motor and a functional machine or actuator. Its purpose is twofold: to reduce speed and to increase torque.

The Following Three Types Are Commonly Used By INEED:

Spur gear box

Spur gears are cylindrical or rectangular gears that are meshed with straight teeth. Spur gear boxes are simple and are usually used for medium speed applications. They are efficient, but they produce noise and vibration. Please visit below link to learn more about our gear motors.

Small Gear Motor

Worm Gearbox

A worm gearbox consists of a worm screw and a worm wheel. They are employed for high gear reduction and offer excellent locking capabilities to prevent back-driving. Worm gearboxes are typically used in applications like smart lock and conveyor systems.

Planetary gearbox

Planetary gearboxes are divided into plastic gearboxes and metal gearboxes according to their materials.

The structure of a planetary gear box includes a planetary gear, including a sun gear, a ring gear, a drive shaft, a washer and a housing component.


It is important to distinguish between gear reducer and gearbox. The electric gear motor is an electromagnetic device that uses the principle of electromagnetic induction to enhance energy conversion or transmission. The gearbox is a power transmission mechanism that uses gear to reduce the speed of the motor to the desired level while obtaining greater torque. In essence, it is used as a transfer device between the motor and mechanical equipment, and is often used in large machinery to convert the speed of the motor into torque.



Why use a gear reducer?

Gear reducers are frequently employed in situations requiring increased torque, reduced rotational speed, or power transmission at different angles, such as a right angle to the motor.  Additionally, they offer the capability to alter the rotational direction, facilitating both clockwise and counterclockwise movements.

What is the gearbox in the transmission?

A gear box is a set of gears located between the electric motor and the mechanical system, designed to reduce the speed of power transmission. Gear reduction boxes, also known as gearboxes, are mechanical devices that serve this specific purpose.

How to select gear ratio for a gear reducer?

To select the ideal transmission ratio for the gear reducer. First, it is necessary to determine the required torque and speed. Second, select the right motor and determine if a gear reducer is needed. If necessary, choose the right type (such as worm gearbox, planetary gearbox) and transmission ratio to achieve the desired output speed and torque, ensuring a customized solution.

What is the difference between gearbox and gearmotor?

A gear box is a transmission device with an independent structure that transmits and converts power through gears or groups of gears.
The gearmotor is a combination of DC motor and gearbox. The gear box is usually added to reduce the speed of DC motor shaft and increase the output torque of DC motor to meet the working requirements required by the equipment.

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