There are many different types of electric motors, each with unique benefits and drawbacks. One popular type of electric motor is the motor with having reduction gearbox.
This type of motor has a gearbox that reduces the speed of the rotor, making it more powerful and efficient.
In this blog post, we will discuss reduction gearboxe for electric motor and some of their types. Let’s get started!
Reduction gearbox for electric motor
Figure 1. Reduction gearbox for electric motor
Electric motors are an excellent choice for powering machines and equipment due to their high efficiency and power density. However, using an electric motor to drive a large load can often require a very robust motor that can handle the high torque.
To learn about the electric motor, here is our guide:
Related: What Is Single Phase Motor? —A Detailed Overview
A reduction gearbox can be used to reduce the amount of torque needed from the electric motor, making it a more appropriate choice for smaller loads.
The reduction gearbox consists of a set of gears that rotate at different speeds. The gearbox is connected to the electric motor through a shaft. The gears in the gearbox rotate at a slower speed than the electric motor, which reduces the speed of the electric motor.
The reduction ratio of the gearbox determines the amount of speed reduction. The higher the reduction ratio, the more the speed is reduced.
Reduction gearboxes are used in many applications, such as pumps, fans, compressors, and conveyors. They are also used in many electric motors, such as induction motors and brushed DC motors.
Types of reduction gearbox for electric motor
Right-angled and in-line gearboxes are the two most common types of gearboxes, and they each have unique gear configurations.
1. Right angle gearboxes
Figure 2. Right angle gearbox
Right-angle gearboxes are used in electric motors to transfer power from the motor to the driven load at a 90-degree angle. This type of gearbox is convenient for applications where space is limited, and it can be used with various motor types.
Right-angle gearboxes are typically composed of two gear stages, which helps to increase the torque that can be transmitted. In addition, this type of gearbox is usually highly efficient, with little power losses due to friction. As a result, right-angle gearboxes are a popular choice for use in electric motors.
Right-angle gearbox has some different types:
Worm gear
Worm gears are used in electric motors to change the speed and torque of the motor. The worm gear is a type of gear with teeth cut into a spiral shape. The gear has meshed with a wheel with teeth cut into a straight line.
The spiral shape of the worm gear teeth allows the gear to engage with the wheel teeth and rotate the wheel. The angle of the spiral determines how much speed and torque are changed.
A higher angle will result in more speed and less torque, while a lower angle will result in less speed and more torque.
The worm gear is an efficient way to change the speed and torque of an electric motor, and it is often used in applications where high speeds or high torques are required.
Bevel gear
A bevel gear is a type of gear used in electric motors. The teeth on a bevel gear are cut at an angle, which allows them to mesh with other gears in the motor.
Bevel gears are typically used in pairs and can be either right-handed or left-handed. Right-handed bevel gears mesh in a clockwise direction, while left-handed bevel gears mesh together in a counterclockwise direction.
In addition to their use in electric motors, bevel gears can also transfer power between two shafts at right angles to each other.
In-line gearboxes
Figure 3. In-line gearbox
In-line gearboxes are used in various applications, from home appliances to industrial machinery. The secret to their success is how they transfer power from the motor to the load.
Unlike other gearboxes, in-line gearboxes have all gears aligned in a single row. This configuration allows for a more efficient transfer of power and results in less wear and tear on the gears.
In addition, in-line gearboxes are less likely to overheat, making them ideal for high-demand applications. For these reasons, in-line gearboxes have become the go-to choice for many industries that rely on electric motors.
In-line gearbox has some further types:
Planetary gear
Planetary gears are one of the most commonly used types of gear in electric motors. They are composed of sun gear, planet gear, and ring gear. The sun gear is the main gear around which the planet gears rotate. The planet gears are mounted on axles that extend from the sun gear.
The ring gear is an outer ring that surrounds the planet gears. Planetary gears can be used to increase or decrease the speed of an electric motor. They can also change the direction of the motor’s rotation.
When used this way, planetary gears are said to be “reversing.” Planetary gears are very efficient and can produce high torque at low speeds. This makes them ideal for use in electric motors.
Spur gear
Spur gears are a common type of gear used in electric motors, and for a good reason – they’re simple, efficient, and relatively inexpensive to produce. A spur gear consists of a cylindrical body with teeth machined into the outer surface.
To transmit rotational force, the teeth mesh with those of another gear or with a rack (a linear gear). One of the critical advantages of spur gears is their efficiency – thanks to the teeth meshing, spur gears can transfer power with very little friction or slippage.
Additionally, spur gears are easy to produce using mass-manufacturing techniques, making them a cost-effective option for many applications. For these reasons and more, spur gears will likely remain a staple of electric motors for years.
Helical gear
Helical gears are used in many electric motors and other applications where high gear ratios are required. One advantage of helical gears is that they can mesh in a crossed configuration, which reduces the tendency for the gears to chatter.
Additionally, the angled teeth provide a smooth, quiet operation. Helical gears are also more efficient than spur gears and can transfer power at higher speeds without sacrificing durability. As a result, they are an ideal choice for high-performance applications.
In addition, the angled teeth of helical gears help distribute the load more evenly, reducing wear and increasing the gear set’s lifespan.
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Reduction gearbox for electric motor
Conclusion-Reduction gearbox for electric motor
A reduction gearbox is an integral part of an electric motor. By understanding the different types of gearboxes and how they work, you can make sure you’re using the best one for your needs. The type of gearbox you choose should be based on the requirements of your application. This article has helped explain some of the basics about reduction gearboxes for electric motors!
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