Why You Should Use Speed Reducers!

Posted on Aug 10, 2020

Why You Should Use Speed Reducers!

A speed reducer is a mechanical device used to double the torque generated by the input power source to increase the available work, and to reduce the input power source speed to achieve the desired output speed. The gearbox or reducer can be set in the opposite direction and the speed of the shaft can be increased by reducing the torque. In this post, we 're going to break down the advantages of a speed reducer, talk about different forms, and tell you why you should also find a speed reducer for your applications.

Benefits of Speed Reducers

So, what are the main advantages you can benefit from by using a speed reducer? Let’s talk about them one by one:

• You can save costs

Using speed reducers to multiply torque and reduce speed helps reduce the overall cost of the operating system. You get increased efficiency and reliability with all your motor applications. Many gear motors are inexpensive to install and require little maintenance, which means less unplanned downtime for gear repairs.

• Increase your Environmental Friendliness

High-efficiency speed reducers can achieve significant savings in energy and drive component costs. Besides, gear motors can also help the environment and operators. Industrial electric motor systems account for approximately 1/12 of all greenhouse gas emissions from fossil fuel power plants. By using high-efficiency reducers such as gear reducers to reduce motor power consumption, the generation of greenhouse gases can be significantly reduced.

• Get a Torque Boost

Gear motors have advantages when they are directly connected to the motor output shaft. This creates a mechanical advantage based on the ratio of the number of gears to the number of teeth on each gear. For example, if the motor produces 17.5 N/mm of torque, installing a 5:1 reducer will produce 87.5 N/mm of output torque.

• Achieve reliable Speed reduction

Speed reducers are also called gear reducers because as they increase output torque, they reduce output speed. A motor with a speed of 1,000 rpm equipped with a 5:1 reducer outputs 200 rpm. Since many motors cannot operate efficiently at low speeds, this speed reduction improves system performance.

:: Read more : What is the selection criteria for choosing a gear reducer?


What type of speed reducer do you need?

It is relatively easy to realize the reduction mechanism by combining spur gears with different numbers of teeth. However, a reducer that has become a device is generally used. We use the following system as a typical reducer. However, the gears given below are usually combined to realize a reducer to ensure the required reduction ratio.

• Parallel Axis Gear Speed Reducer

Depending on the reduction ratio, it can be divided into one to four stages. The power is transmitted in a rolling manner. Therefore, transmission efficiency of approximately 98% per stage can be ensured. The reduction ratio is about 1/5 to 1/2500, which can cover various reduction ratios. The combination of gear stages and reduction ratio is different. This means that the size of the reducer changes according to the output of the adaptive motor.

• Helical Speed Reducer

This is the same as a parallel shaft gear reducer, but it uses helical gears as gears. Helical gears usually have twisted tooth shapes. As a result, the tooth meshing ratio increases. This means that a highly smooth and quiet power transmission can be obtained. However, they have a weakness. The thrust they generate is proportional to the size of the power transmission. This is because the marks on the teeth are smooth. This weakness can be overcome by double-helical gears equipped with opposite helical gears to counteract the thrust.

• Bevel Gear Speed Reducer

This is a reducer combined with a bevel gear at an angle of normally 90 degrees.The combination of large and small gears will reduce speed. However, these are often used for output with a 90° swing. For this reason, if the reduction ratio in the bevel gear reducer is 1:1, it is also called a miter gear. Gears that increase the meshing ratio by twisting the tooth traces of bevel gears such as helical gears are called spiral bevel gears.

• Hypoid Speed Reducer

The gear is designed to offset the center of the pinion axis relative to the center of the gear axis by a certain amount. These increase the power transmission of spiral bevel gears, such as the worm reducer we will introduce later. This makes a smoother power transmission possible. The hypoid reducer can obtain a larger reduction ratio. This is because the gear ratio is as large as a worm reducer. However, participation is complicated. Therefore, it is necessary to accurately adjust the engagement position.

• Worm Speed Reducer

This is a reducer that combines a worm wheel and a worm wheel. Only through this combination, it is possible to obtain a large reduction ratio of about 1/10 to 1/60. If the lead angle of the worm wheel becomes smaller (the reduction ratio is higher), it is called self-locking. By taking advantage of the fact that it is difficult to rotate from the worm wheel side (output side), the lifting device can be prevented from falling. Also, reducing the thrust recoil of the input shaft makes it possible to suppress recoil. Therefore, this is a reducer with various advantages. However, compared with spur gears, power is transmitted according to the sliding of the tooth surface. Therefore, heat is easily generated, and the transfer efficiency is not very good, about 50%.


New type magnetic speed reducer

The magnetic speed reducer could replace the traditional gear reducer to ensure speed and torque multiplication by magnetic attraction instead of physical contact between moving parts. To date, complicated materials, high weight, and low torque have hindered the success of this magnetic technology. Electromagnetic gears, however, eliminate the need for lubrication, thus minimizing maintenance costs. Failure to lubricate also ensures that the device can work at high temperatures. Such benefits are especially desirable for applications that are costly to maintain or run in extreme environments.


Speed Reducers on IMTS-Exhibition.com

You can find many speed reducers on our site. Just head to our product section or check out our search function to find all related companies in our product database.  If you want to learn more about CNC machinery related questions and their applications make sure to check out our other blog entries.

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