How to Select Helical Gear Reducer?

Product characteristics of the helical gear reducer Highly modular design, installation location is unrestricted, high strength, small size, long life, low noise, high efficiency, can withstand greater radial load, can withstand axis load not more than 5% of the radial force.

1. Selection of models at the helical gear reducer selection Usually it is determined by the customer according to the form of drive mounting arrangement. GR, GF series helical gear reducer are used for the input shaft and output shaft parallel occasion, that is the parallel shaft helical gear reducer we often say, GS, GK Series are used for the input shaft and output shaft vertical occasions.

2. The determination of actual condition coefficient fa (see sample) 1) General requirements 2) Special use requirements

3. The determination of the model (specifications) Must satisfy the condition fb> = fa

1) Constant power selection (1) Motor and reducer straight or connect by coupling (2) The motor and reducer is connected by pre-reducer coupling



2. Constant torque selection (generally used when reducer and r series helical gear reducer in dual-class series) Check the selection parameter table by motor power, stages and transmission ration (constant torque). At this time, the working torque must be limited in the maximum torque range of the selected deceleration.

4. Radial load test When the reducer shaft head is equipped with gears, pulleys, sprockets, it will produce a large radial load. In this case, we need to test the radial load. See the aforementioned selection parameter table definitions.

5. Installation conditions test This inspection should be carried out if there are size installation restrictions. I.e. compare the chosen machine model structure dimensions and the dimensions of the space. If all of the above can be met, write according to the respective machine model method. If there are special requirements, it can be described in texts. Helical gear reducer model can take reference to the s series reducer representation.

We need to understand the ordinary supplier conventions when considering how to select helical gear reducer:

1. Y2 series motor supply is IP54 degree of protection, F class insulation, but should be Class B insulation conditions in general use unless there is other statement, for example, when spiral bevel gearbox reducer is equipped 3KW motor, 3KW motor protection class is IP54 and insulation class is F grade.

2. If not indicate the motor terminal box position, usually supply according to the 0 ° position of the installation diagram.

3. If not particularly point out the input and output shafts spin relationship, generally not make logo on the reducer.

4. The reducer should be added with lubricant before being shipped out of the factory.

5. Installation structure size icon indicates the attachment outside the standard scope of delivery is generally not available.

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.

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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.

Basic Knowledge of Gear Reducer

The gear reducer is widely used in metallurgy, mining, lifting, transportation, cement, construction, chemical, textile, printing and dyeing, pharmaceutical and other fields. The gear reducer should be used when: 1. High-speed shaft under 1500 rev / min 2. Gear peripheral speed is less than 20 m / sec 3. The working environment temperature is around -40-45 ℃. If less than 0 °C, before start the oil should be preheated to a temperature above 0 ℃ 4. The gear reducer can be used in both directions



Machine Features 1. Gear is made of high-strength low-carbon alloy steel carburized. The surface hardness reaches HRC58-62 and the gears are processed by CNC grinding with high accuracy and good contact. 2. Transmission rate: single level is greater than 96.5%, two-stage is more than 93%, and three –level is more than 90%. 3. Smooth operation, low noise. 4. Small size, light weight, long life, and high load carrying capacity. 5. Easy to be overhauled, and easy to install

Power speed ratio torque reduction ratio: 25 ~ 4000r/min (RX, R, K series combination can achieve greater speed ratio) Output torque: 2600000Nm Motor power: 0.4-12934kW

Maintenance of gear reducer First, the reducer (such as helical gear reducer) uses 460 # load industrial gear oil, and working environment temperature is 0 to 40 ° C. Second, after the first 100 hours of use, you should wash inner cavity replaced with new gear oil after oil change once every 2,000 hours. Third, disassembly reducer should avoid hammering in order to avoid damage to the normal mechanical. Fourth, if shaft connected at oil leakage phenomenon, skeleton oil seal and seals should be replaced.

Features of four series of gear reducer 1. R, K, S, F four series gear reducers including worm gear reducer are designed and manufactured based on module combination system. They have lots of motor combinations, install forms and structure programs. They have fine drive score level which can meet different use conditions to achieve mechatronics. 2. The four series gear reducers use unit structure modular design principle which provide a significant reduction in the types and inventory parts. 3. The four series of gear reducers drive efficiency with low energy consumption and superior performance. 4. They have the high rigidity ribbed cast iron box. The gears are made of high quality alloy steel with hardened surface carburizing by precision machining grinding. They provide smooth transmission with low noise, high carrying capacity, low temperature rise, and long life.

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.