Notes for Gear Reducer Selection

A few things should be noted when select models of the reducer: Try to use close to the ideal reduction ratio: reduction ratio = servo motor speed / reducer output shaft speed

The torque calculation: In terms of the life of the worm gear speed reducer, torque calculation is very important and pay attention to the maximum torque value of acceleration speed (TP) , whether it exceeds the maximum load torque of the reducer. Applicable power is usually applicable power of models on the market, the reducer is high applicable, work coefficient can be maintained at more than 1.2, but you can also choose according to your own needs, there are two main points:

A. The selected motor output shaft diameter is not greater than the maximum shaft diameter in the form; B. If work by the torque calculation, the speed can meet the normal operation, but has insufficient phenomenon in full output, we can do the current limit control on the drive by the motor side, or make torque protection in the mechanical axis, which is very necessary

Selection of general reducer

Selection of general reducer includes asking the original condition, choose type, to determine the specifications and other steps. In contrast, type selection is relatively simple, but accurately providing reducer working conditions, to master the design, manufacture and use characteristics of the helical gear reducer are the key to correctly and reasonably choose specifications. Specifications selection should meet the intensity, the heat balance, shaft extension parts bear radial load conditions.



Choose specifications by mechanical power or torque (strength checking)

The biggest difference between universal reducer and special reducer design selection method is that the former is applicable to various industries, but deceleration can only design according to a specific working condition, so at the selection, users need to consider different correction factors in accordance with their respective requirements, the factory should make the nameplate according to the actual optional motor power (not reducer rated power); the latter design according to the special conditions of the user, the coefficients need to be considered generally has been considered at design, only if the power is less than or equal to the rated power of the gear, it is ok, which can be relatively simple.

Currently, the coefficients used by the countries in the world are basically the same. Though many samples do not reflect KS \ KR two coefficients, but because confidant (clear about the requirements), knowing your enemy (clear about the performance characteristics of reducer), we generally leave large wealthy amount at the time of foreign selection, which is equivalent to consider the impact of the KR \ KS.

www.gearspeedreducer.com is the largest professional manufacturer of decelerators including gear reducers like worm speed reducer, bevel speed reducer and helical reducer in South China. Our gear speed reducers are exported to South Asia, Hong Kong, Taiwan and sold in over 20 provinces, municipalities directly under the Central Government and regions nationwide, with a sales volume topping in the industry in South China and the quality widely recognized on the market.

Notes for Buying Helical Gear Reducer

Determine the purpose of the reducer purchase

The first step to buy the reducer, we must first determine the purpose of the purchase. For reducer classification, there are cycloid reducer, planetary gear reducer, worm reducer, etc. There is less harmonic gear reducer, the roller cam reducer, toroidal worm reducer, and so on. There are many branches below, and is quite complex to enumerate. And each worm gear speed reducer is not suitable for the same areas. A turbo-worm should be used with ordinary motor; accuracy requirement is high, if equipped with stepper, servo motor, planetary gear reducer should be used; cycloid reducer is rarely see to be used, which is also equipped with high-precision servo motors.

Overall, we must first determine whether to purchase imported reducer, or domestically made reducer, because, as the different manufacturers, it has its own set of name. If not be aware of this, it might bring problem for the work later.



Secondly, we need to have a technical drawing reflecting reducer structure or reducer style. Because when we get the parameters of the reducer, we can analyze whether it is applicable for our production. Here, we need to have a wealth of theoretical knowledge to investigate the reference parameters we understand. This requires a lot of accumulation, but also requires a certain amount of experience, which requires us constantly learning reducer technology.

The following points should be noted when selecting helical gear reducer:

1. Allowable input shaft diameter Reducer input shaft hole and the motor output shaft are generally connected by a collar whose thickness varies. When not jacketed with ring, the reducer input shaft hole is maximum value.

2. Allowable input flange Cannot be greater than or less than the standard size of Pro-stage gear unit, for example, the standard flange for PLE80 reducer is 80mm, the Pro stage PLE60 and PLE120, PLE80 reducer, the maximum allowed flange should not be less than 60mm, but is also not be more than 120mm.

3. Maximum input speed The maximum input speed of the motor is less than the maximum input speed of reducer.

4. Rated output torque The adaptive motor rated output torque multiplies reducer reduction ratio is the reducer output torque, which should be less than or equal to the rated output torque of the reducer.

We need to know certain reducer parameters, but also understand to inject the right amount of lubricant in the reducer before running, choose the viscosity of the lubricant in accordance with the provisions. Working oil temperature must not exceed 80℃. Lfetime lubrication combination reducer is filled with synthetic oil in the factory, in addition, the reducer usually doesn’t have lubricating oil when supplied, but have the oil fill plug and oil drain plug. If the transmission power is more than the heat capacity of the reducer, the external cooling means must be provided.

www.gearspeedreducer.com is the largest professional manufacturer of decelerators including gear reducers like worm speed reducer, bevel speed reducer and helical reducer in South China. Our gear speed reducers are exported to South Asia, Hong Kong, Taiwan and sold in over 20 provinces, municipalities directly under the Central Government and regions nationwide, with a sales volume topping in the industry in South China and the quality widely recognized on the market.

Speed Reducer’s Classifications

Speed reducer is a kind of sophisticated machinery. Its purpose is to reduce the speed and increase torque. It has a wide variety of different models, different types have different uses. According to traditional types, there are gear reducer, worm gear units and planetary gear reducer.According to the type of transmission speed reducer can be divided into monopole reducer and notching reducer. And for gear shape it can be divided into cylindrical gear reducer, bevel gearbox and conical-cylindrical gear reducer. For turning arrange forms it can be divided into the shunt reducer and coaxial reducer. Following are commonly reducer classifications: Planetary cycloid reducer, worm reducer, gear reducer, planetary gear reducer, gear motor. Stepless speed reducer, special purpose harmonic reducer. Precision gearhead combination of enterprise standard reducer, AC gear motor reducer. Sinking reducer, parallel shaft speed reducer, micro DC speed reducer, spur gear box reducer.



Features The main characteristic of the worm gear speed reducer is reverse self-locking function which can provide a greater reduction ratio. The input shaft and the output shaft are not in the same axis or the same plane. But generally it is larger but with lower transmission efficiency and accuracy. Harmonic reducer harmonic drive uses controllable elastic deformation of flexible elements to transmit motion and power. It is in small size but high accuracy. Its disadvantages include drawback is the limited flexspline life, low impact resistance, low rigidity compared with metal pieces, lower Input speed, and so on. Planetary reducer has the advantages like compact structure, small backlash, high accuracy, long service life, large rated output torque. But the price is slightly more expensive. Gear reducer is featured with small size and large torque transmission. Gear reducer is designed and manufactured based on module combination system with a lot of solutions for motor combination, installation, and structure. It has better transmission ratio classification and can meet different use conditions by achieving mechatronics. Gear reducer has higher transmission efficiency, low energy consumption, and superior performance. Cycloid reducer is a machine which uses cycloid needle teeth meshing planetary transmission principle. It is an ideal transmission with many advantages. It’s versatile and can work both positive and negative.

www.gearspeedreducer.com is the largest professional manufacturer of decelerators including gear reducers like worm speed reducer, bevel speed reducer and helical reducer etc. in South China. (Gear reducer is also known as speed reducer, gearbox). Our gear speed reducers are exported to South Asia, Hong Kong, Taiwan and sold in over 20 provinces, municipalities directly under the Central Government and regions nationwide, with a sales volume topping in the industry in South China and the quality widely recognized on the market.

Features and Application of Gear Reducer

1.Gear reducer overview

Gear reducer is power transmission machinery, which uses the gear to achieve the purpose of deceleration. Many transmission equipment uses gear reducer to achieve the effect of low speed with high torque. Gear reducer is using the gear speed inverter to reduce the motor turnover number to the required number of rotations and get a larger torque. The worm gear speed reducer can enhance output torque while deceleration. However, the proportion of the torque output of the gear reducer equals to motor output multiplied by the reduction ratio. Be careful that not to exceed the rated torque. Besides, before the gear reducer is officially put into use, we must load commissioning as well as no-load operation. Make a trial run is to check whether the gear reducer has anomalies during operation. After every check, the gear speed reducer can be officially put into use.



2. The characteristics of gear reducer:

a. The gear is using high-strength low-carbon alloy steel hardened by carburizing made. All the gears are grinded by CNC process and are high precision as well as good contact. b. The transmission rate: single-stage greater than 96.5%, more than 93% of the two-stage, three-stage is more than 90%. c. Smooth operation, low noise. d. Small size, light weight, long life, high load carrying capacity. e. Easy to be overhauled, and easy to be install.

3. The gear reducer’s scope is as follows (provided by professional speed reducer supplier): a. The high-speed shaft will not turn greater than 1500 rev / min. b. Gear peripheral speed is not more than 20 m / sec. c. The working environment temperature should be -40-45 ℃. If it is less than 0 ℃, use oil to preheat to above 0 ℃ before starting. d. The gear reducer operation can be used in both directions.

www.gearspeedreducer.com is the largest professional manufacturer of decelerators including gear reducers like worm speed reducer, bevel speed reducer and helical reducer etc. in South China. The research institute of Zhujiang Reduction Gear Co., Ltd. specializes in the development of accelerators, speed variators and decelerators. Since its foundation in the 1980s, the company has always been creating famous brand products and improving the new concept of decelerator with performances. The "Qiangzhu" decelerator has won the "TQC" Quality Conformity of the Ministry of Agriculture and the Class II certificate for "Compliance with Metering Assurance System of Guangdong" in succession. By 2004, it has won 6 national patents, a range of provincial and municipal level technological advance prizes, and has been appraised as a "Mass-run Hi-tech Enterprise of Guangdong" by the Science and Technology Administration of Guangdong Province.

Development Trends of China Reducer industry in 2013

The history of the development of reducer industry

Throughout the course of development of China's reducer, since the 1980s, due to the all-round development of the technology of the world, the production technology of gear reducer in China is relatively mature. During this period, our the reducer industry has gone through a long process of development, from the blind imitation of types of foreign worm gear reducer technology applications to the independent design, and now the wide use of a variety of new technologies make our own design and manufacturing capabilities can meet the basic domestic needs, to speed up the pace of development of the industry reducer.



The large scale of China reducer industry

Due to the impact of the economic crisis, many reducer equipments which are ready for export quickly move the goal to the domestic market, which has brought tremendous competitive pressure to the reducer market, and the China reducer industry enterprises put forward higher requirements on the quality of their products. In addition, with the energy saving and environmental protection has become the common topic in the world, and the reducer enterprise is launched to the R & D and production of environmentally friendly reducer.

As we all know, the machinery and equipment industry in China in the past were based on extensive production mode, while in recent years, with the scarcity of various types of energy, enterprises gradually found that this mode of production is not suitable for the sustainable development policy and also does not have much development prospects. So we seek other ways of production, and the reducer industry has committed to building energy saving mode of production, and gradually became a relatively mature enterprise system. Large worm gear speed reducer consume more materials, and the work power consumption will also increase, therefore reducer producers begin moving equipment to the international trends to develop simple, lightweight, environmentally friendly reducer in the market, in order to open up the market competitiveness and increase the corporate brand.

In summary, the development of our reducer industry is rapid, However, because most of the enterprises are the introduction of foreign advanced technology research and development of products, the production mode is similar, and therefore a unique device must be equipped in the fierce market competition and was sufficient to occupy the industry market, and environmentally friendly reducer is undoubtedly one of the goals of the development of the industry now, supposed to calm in the face of various enterprises and in the face of fierce market competition, and take appropriate measures in accordance with their respective enterprise production system, speeding up the pace of product innovation is bound to break through the bottleneck.

www.gearspeedreducer.com (formerly Zhujiang Reduction Machinery Factory), is the largest professional manufacturer of decelerators including gear reducers like worm speed reducer, bevel speed reducer and helical reducer etc. in South China. (Gear reducer is also known as speed reducer, gearbox)