This article mainly introduces:

Denmark hydraulic cylinder,yg series hydraulic cylinder manufacturer,yg series hydraulic cylinder

(Denmark yg series hydraulic cylinder,produced by Hengyu Group）

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

Introduction to yg series hydraulic cylinder:

When installing the yg series hydraulic cylinder, the axial ends of the yg series hydraulic cylinder cannot be fixed. Due to the effect of liquid pressure and thermal expansion in the yg series hydraulic cylinder, there is axial expansion. If the two ends of the yg series hydraulic cylinder are fixed, all parts of the yg series hydraulic cylinder will be deformed. When disassembling the yg series hydraulic cylinder, it is strictly forbidden to hammer the yg series hydraulic cylinder and the piston surface, such as the yg series hydraulic 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 yg series hydraulic cylinder is mainly composed of body, piston, piston rod, yg series hydraulic cylinder head, yg series hydraulic cylinder bottom, piston rod head and related auxiliary devices. The piston divides the yg series hydraulic cylinder into two chambers, and moves reciprocally in the yg series hydraulic cylinder with the help of pressure oil. In order to improve its working effect, there is no sealing ring on the piston to eliminate internal leakage, where the piston rod passes through the yg series hydraulic cylinder head, due to the existence of the gap, it is easy to produce external leakage phenomenon, and the dust can enter the yg series hydraulic cylinder through the gap, so the sealing device and dust prevention reason are set. At the same time, in order to eliminate the influence of eccentric load on the work of the piston, all the yg series hydraulic cylinders must be provided with a considerable length of guide sleeve at the extended end of the piston rod. In addition, in the case of faster piston movement, the phenomenon of mechanical collision between the piston and the yg series hydraulic cylinder bottom and the yg series hydraulic cylinder head is serious, so the buffer deceleration should be set at both ends of the yg series hydraulic cylinder The working medium of the yg series hydraulic cylinder: because it works at room temperature, the ordinary oil-type hydraulic oil can be selected; yg series hydraulic cylinder sealing device: The use of Yx sealing ring, polyurethane (PU) and polytetrafluoroethylene (PTFE) materials combined to achieve a good sealing effect; Buffer mechanism of the yg series hydraulic cylinder: The buffer structure of the yg series hydraulic cylinder is to prevent the piston from colliding with the yg series hydraulic cylinder head at the end of the stroke.

yg series hydraulic cylinder buffer valve inspection and maintenance: For the valve buffer yg series hydraulic cylinder, the focus should be on checking the wear of the buffer valve spool and seat. Once it is found that the amount of wear increases and the seal fails, it should be replaced. It can also be repaired by using abrasive spool and seat matching grinding method.

If it is found that the yg series hydraulic cylinder lubrication is poor or the yg series hydraulic cylinder bore processing is abnormal, it is necessary to feedback the situation to the manufacturer, because the piston and the yg series hydraulic cylinder, the guide rail and the piston rod have relative movement, if the lubrication is poor or the yg series hydraulic cylinder bore is abnormal, it will aggravate the wear and reduce the straightness of the yg series hydraulic cylinder center line. In this way, when the piston works in the yg series hydraulic cylinder, the friction resistance will be large and small, resulting in slip or crawling. The solution is to repair and grind the yg series hydraulic cylinder first, and then prepare the piston according to the matching requirements, repair and grind the piston rod, and configure the guide sleeve.

Answers to some questions about yg series hydraulic cylinder:

Can a leak in the cylinder cause the hydraulic system to fail?
Leakage in the cylinder can cause the hydraulic system to fail. Cylinder leakage (internal leakage) first affects the controlled action of the hydraulic system can not meet the requirements (such as the movement speed of the cylinder, the insufficient thrust and tension of the cylinder), if the internal leakage of the cylinder is too large, it may also cause the cylinder to be unable to promote the load movement. Second, the existence of internal leakage (internal leakage) of the oil cylinder will lead to the rapid rise (or too high) of the oil temperature of the hydraulic system, and the high oil temperature will not only waste the energy conversion of the system, but also lead to the reduction of the viscosity of the oil, which will accelerate the aging and destruction of the seals such as pumps, valves, cylinders, pipelines, and at the same time, the lubrication effect of the hydraulic oil is reduced, and the production of iron filings that increase the friction of the hydraulic system.

What material is the piston rod of the cylinder made of?
About the piston rod: ① Piston rods are usually made of 45# steel. When there is a large impact force and heavy load transmission, it is made of 40Cr steel. This is to ensure that the piston rod has sufficient working strength. ② The piston rod is generally designed as a cylinder, if the diameter is larger, the hollow piston rod can be used with 45# seamless steel pipe. ③ When the piston rod is manufactured, the blank should be first forged and conditioned after mechanical rough processing, and the hardness of HB=230 ~ 250. The purpose of conditioning is to improve the machining performance and increase the working strength of the material. ④ The surface roughness Ra of the piston rod after finishing should not be greater than 0.65μm. ⑤ In order to improve the corrosion resistance of the piston rod, the rod surface needs to be chrome plated.