This article mainly introduces:

S.Africa hydraulic cylinder,servo cylinder manufacturer,servo cylinder

(S.Africa servo cylinder,produced by Hengyu Group）

servo cylinder are widely used in S.Africa，because of no transmission clearance，powerful torque，clever hydraulic energy conversion.So our company has designed servo cylinder for customers from S.Africa.

Introduction to servo cylinder:

Piston servo cylinder is widely used in hydraulic transmission. When the servo cylinder works, it mainly delivers hydraulic oil alternately to both sides of the piston in the servo cylinder, and uses the pressure difference of hydraulic oil on both sides of the piston to realize the reciprocating movement of the piston. If you want to speed up the forward speed of the piston, the return oil in the servo cylinder can be controlled by the valve and directly input into the inlet pipe to participate in the work of the piston to achieve rapid movement of the piston, but the thrust of the piston is reduced much.

If air enters the hydraulic system, the servo cylinder will not operate normally, mainly because there is a leak in the system. At this time, check the liquid level of the hydraulic tank, the seals and fittings on the oil suction side of the hydraulic pump, and whether the oil suction filter is too dirty. If so, the hydraulic oil should be replenished, seals and fittings should be treated, and the coarse filter element should be cleaned or replaced.

The internal leakage of the servo cylinder is an important indicator to measure the quality of the servo cylinder: the internal leakage of the servo cylinder will reduce the volumetric efficiency, increase the temperature rise of the oil, affect the positioning accuracy of the servo cylinder, so that the servo cylinder can not accurately and stably stop in a certain position of the servo cylinder, so it is one of the main indicators of the servo cylinder.

If the servo cylinder is sliding or crawling (stop and go), check whether there is any astringency inside the servo cylinder. The internal parts of the servo cylinder are improperly assembled, the parts are deformed, worn or the shape and position tolerance is excessive, and the action resistance is too large, so that the piston speed of the servo cylinder changes with the different stroke position, and there is slip or crawl. Most of the reasons are due to poor assembly quality of parts, surface scars or sintered iron filings, so that the resistance increases, the speed decreases. For example, the piston is different from the piston rod or the piston rod is bent, the servo cylinder or the piston rod is offset from the mounting position of the guide rail, and the sealing ring is too tight or too loose. The solution is to repair or adjust, replace damaged parts and remove iron filings. At the same time, check whether the lubrication is good or whether the servo cylinder bore processing is out of whack. Because the piston and servo cylinder, guide rail and piston rod are relative If the servo cylinder is crawling seriously, check whether air has entered the hydraulic system. Air compression or expansion can cause the piston to slip or crawl. The exclusion measures are to check the hydraulic pump, set up a special exhaust device, and quickly operate the exhaust several times in the full stroke. Check the seals at the same time, because the quality of the seals is directly related to slippage or crawling. When the O-ring is used under low pressure, compared with the U-ring, it is easy to slip or crawl because of the higher surface pressure and the larger difference between static and static friction resistance. The surface pressure of the U-shaped sealing ring increases with the increase of pressure, although the sealing effect is correspondingly improved, but the difference between static and static friction resistance is also larger, the internal pressure increases, affecting the rubber elasticity, due to the increase in the contact resistance of the lip, the sealing ring will tip over and the lip elongation, and it is also easy to cause slip or crawling servo cylinder weight composition and calculation. The weight of the servo cylinder is composed of the servo cylinder diameter, the outer diameter and weight of the servo cylinder, the rod diameter, and the weight of the accessories, so in calculation, it is to add all these together to get the specific value. However, if there are special circumstances, it may be calculated separately. This work can be carried out by yourself, but it can also be carried out by professionals, so that mistakes can be avoided.

Answers to some questions about servo cylinder:

How to control the speed of the cylinder?
High demand control, it is necessary to use servo closed-loop control, you can adjust the speed at will. Reference: Hydrodynamic Motion Control Practical Design Guide.

How to calculate the tonnage of the hydraulic press? Example: The input cylinder pressure is 5Mpa, the end area of the cylinder piston is 100mm, and how much is the thrust tonnage?
F=P*S=5*10^6*3.14*(1/20)^2=39250N.