This article mainly introduces:

Slovakia hydraulic cylinder,hydraulic lifting cylinder manufacturer,hydraulic lifting cylinder

(Slovakia hydraulic lifting cylinder,produced by Hebei Hengyu company）

hydraulic lifting cylinder are widely used in Slovakia，because of excellent temperature resistance，no transmission clearance，powerful torque.So our company has designed hydraulic lifting cylinder for customers from Slovakia.

Introduction to hydraulic lifting cylinder:

The assembly work of the hydraulic lifting cylinder has a great impact on the quality of the hydraulic lifting cylinder: each part must be carefully cleaned before assembly; To correctly install the sealing device everywhere: when installing the sealing ring, pay attention to its installation direction to avoid oil leakage due to installation, and its lip should be equipped with a pressure oil chamber. In addition, because it is a YX-shaped sealing ring, it is necessary to pay attention to distinguish between shaft and hole use, do not install wrong; Because the sealing device is matched with the sliding surface, an appropriate amount of hydraulic oil should be applied during assembly; The special wrench should be used when the threaded coupling is tightened, and the torque should meet the standard requirements; After the piston and piston rod are assembled, it is necessary to measure whether the coaxiality and straightness on the full length are out of whack. After assembly, there should be no blocking sensation and uneven resistance when the piston assembly moves.

When installing the hydraulic lifting cylinder, the axial ends of the hydraulic lifting cylinder cannot be fixed. Due to the effect of liquid pressure and thermal expansion in the hydraulic lifting cylinder, there is axial expansion. If the two ends of the hydraulic lifting cylinder are fixed, all parts of the hydraulic lifting cylinder will be deformed. When disassembling the hydraulic lifting cylinder, it is strictly forbidden to hammer the hydraulic lifting cylinder and the piston surface, such as the hydraulic lifting cylinder hole and the piston surface is damaged, do not allow sandpaper grinding, to use a fine oil stone carefully grinding. The clearance between the guide sleeve and the piston rod should meet the requirements.

The method of sleeve hydraulic lifting cylinder to improve the processing quality: there is a big gap in the service life of post-plating polishing and post-plating polishing, especially in mass production. Strictly clean the flying edge and burr of mechanical components, especially the edge of the sealing groove, and the tiny metal burr, strictly clean before assembly. The surface fatigue strength and stress corrosion resistance of the hydraulic lifting cylinder can be significantly improved by rolling in the finishing of the inner holes of the hydraulic lifting cylinder. The roughness of the surface of the friction pair is generally controlled between Ra0.4 and 0.8.

If the hydraulic lifting cylinder slips or crawls, please check whether there is astringency inside the hydraulic lifting cylinder, because the internal parts of the hydraulic lifting cylinder are improperly assembled, the parts are deformed, worn or the shape and position tolerance is excessive, the action resistance is too large, so that the piston speed of the hydraulic lifting cylinder changes with the different stroke position, and the slip or crawl occurs. 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 hydraulic lifting 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.

Answers to some questions about hydraulic lifting cylinder:

How is the cylinder of hydraulic cylinder processed?
As the main parts of hydraulic cylinder, mining single pillar, hydraulic support, gun barrel and other products, its processing quality directly affects the life and reliability of the whole product. Cylinder processing requirements are high, the internal surface roughness requirements are Ra0.4 ~ 0.8&um, the coaxiality, wear resistance requirements are strict. The basic feature of cylinder is deep hole processing, which has always troubled the processing personnel. Due to the residual compressive stress on the surface of the surface layer, the rolling machining is helpful to seal the small cracks on the surface and prevent the expansion of erosion. Thus, the corrosion resistance of the surface can be improved, and the fatigue crack can be delayed or expanded, and the fatigue strength of the cylinder can be improved.

Can one hydraulic pump with two cylinders work?
A hydraulic pump with two cylinders will work. Commonly used hydraulic pump types: 1, according to whether the flow can be adjusted can be divided into: variable pump and quantitative pump. The output flow can be adjusted according to the needs of the variable pump, the flow can not be adjusted called quantitative pump. 2, according to the pump structure commonly used in the hydraulic system is divided into: gear pump, vane pump and plunger pump 3 kinds. Gear pump: small volume, simple structure, the cleanliness of the oil requirements are not strict, the price is cheaper; However, the pump shaft is subjected to unbalanced force, serious wear and leakage. Vane pump: divided into double acting vane pump and single acting vane pump. The pump has uniform flow, smooth operation, low noise, higher pressure and volumetric efficiency than gear pump, and more complex structure than gear pump.