(speed decrease, torque increase) the speed ratio of most reducers is fixed, but there are also adjustable reducers, such as the adjustable reducers in cars. The output power of the reducer will not change for no reason. According to the law of conservation of energy, a part of its energy is turned into heat energy and consumed. Generally, the working efficiency of the reducer is 60% - 98%.

(R series reducer with motor)

If the reducer is used in low-speed occasions, can only use an ordinary low-speed motor alone? Or a servo motor? Of course, it is not enough to use only one ordinary low-speed motor, because:

1. The speed is generally not up to: in general, the speed ratio of the reducer can be as low as 3:1 or even smaller, or higher than 170:1 or even larger. For example, when the ordinary motor speed is 1300 rpm, the output speed of the reducer can be as high as 450 rpm or more, or as low as 7.5 rpm or less. Does it have such a large speed range for ordinary motors? Even if it is a multi-stage variable-speed motor, the speed of the fastest Level 2 motor is about 2800-2900 rpm, and the speed of the lowest level 12 motor is about 450-500 rpm. If you only need more than ten rpm, ordinary motors can't do it.

2. Ordinary motor torque is generally not up to: the load equipment that requires low-speed operation generally requires relatively large torque (such as freight elevator, winding machine, etc.), even if the speed of ordinary motor meets the requirements, the torque often can not meet the requirements.

(s series reducer with motor)

For low speed applications, can only one AC servo motor be used? This problem has to be dealt with in specific circumstances

It is not a problem to use AC servo to run at low speed, but it will also have the same speed load requirements as ordinary low-speed motors, and the torque does not meet the requirements. If both can meet the requirements, then of course it is the preferred solution. If the torque does not meet the requirements, there are several different configuration schemes: A. high power AC servo equipment, B. low power AC servo device + reducer scheme advantages and disadvantages: scheme B is suitable for the situation that there is no special requirement for position accuracy, with relatively low cost and obvious cost performance advantages. Scheme a is suitable for higher position accuracy requirements, although the cost is higher, the accuracy is guaranteed;

However, in scheme B, the small power AC servo + reducer scheme, due to the unique structural defects of the reducer (mechanical gear clearance), causes a certain range of accuracy error is inevitable. Each of the two schemes has its own advantages and disadvantages. The user should choose the final scheme according to the site specific situation, technical requirements, amount of funds and other factors.

How to choose reducer for servo motor in general? It's very difficult to explain this problem clearly. We'd better give examples to make it easier for you to understand. For example, now I have an 800W motor in my hand. If I want to install a reducer, how can I choose?

(physical drawing of F series reducer with motor)

Attention should be paid to the following in the selection:

1. First of all, we must understand that the rated torque of our load equipment should be less than the rated output torque of the reducer, otherwise the load will not turn when decelerating;

2. Secondly, the reduction ratio of our reducer should not be too small. The judgment method is that the rated power of servo motor multiplied by the reduction ratio should be greater than the load torque.

3. Finally, when the torque of the reducer meets the design requirements, the precision control should also meet the design requirements.

Because of this, the two are used together. The motor is usually sold together with the reducer, but sometimes if one of the two is broken, you have to buy it again, either the same as the original or according to the original specific speed and other parameters. For example, the combination of r67-23-drs132-4-m1 is that the reduction ratio of r67 reducer 23 is matched with the motor installed in stage 4 M1 of 132. In this way, there are many matching combinations, depending on your requirements for reducer and motor.