What is the cost of cylinder application?

Generally speaking, the electric servo drive is more expensive than the pneumatic servo drive, but it also depends on the specific requirements and occasions. Some small power DC motors make up electric sliding table (electric servo system) is actually cheaper than pneumatic servo system.

For example, when the load is 1.5kg, the working stroke is 80mm, the speed is between 2-170mm / s, the accuracy is ± Under the working conditions of 0.1mm and acceleration of 2.5m/s2, small electric sliding table, controller, motor cable, control cable, programming cable and power cable are used to make up the electric servo system, and the price is 25% cheaper than that of pneumatic servo system. Likewise, for electric cylinders with piston rods.

It is necessary to explain that if AC motor is used, the price of the electric servo system is about 40% higher than that of the pneumatic servo system.

From the perspective of purchase and application cost, the cylinder manufacturer has obvious advantages at present. For pneumatic system, the control system and actuator are very simple. Each cylinder can switch the air circuit by only one solenoid valve. The movement control is carried out. The probability of cylinder failure is also relatively small, and the maintenance is simple and convenient, and the cost is low.

For electric actuator, although the power is obtained relatively simple and the energy cost is low, the cost of purchase and application is high. It not only needs to configure the motor, but also requires a set of mechanical transmission mechanism and corresponding driving elements. At the same time, many protection measures are needed to use the electric actuator. The wrong circuit connection, voltage fluctuation and overload of load will cause damage to the electric driver. Therefore, it is necessary to install protection system on the circuit and machinery, which increases many additional expenses. In addition, because of the more parameterized settings and high integration of the electric actuator drive unit, the whole component should be replaced in case of failure. And when the drive force needed by the system increases, it can be realized by replacing components in a complete set.

Therefore, the comprehensive comparison can be seen that the cylinder has a great advantage in the cost of purchase and maintenance.

Based on the above analysis, we should see that the standard cylinder and electric actuator have their own characteristics, and can not be evaluated by the efficiency alone. With the development of electrical technology, the cost of electric actuator will be further reduced, and its application field is expected to be further expanded, but it is not realistic to replace the cylinder completely.