This article mainly introduces:

Croatia hydraulic cylinder,stern plate hydraulic cylinder manufacturer,stern plate hydraulic cylinder

(Croatia stern plate hydraulic cylinder,produced by Hengyu Hydraulic Cylinder Factory）

stern plate hydraulic cylinder are widely used in Croatia，because of smooth movement，high work efficiency，excellent fatigue and impact resistance.So our company has designed stern plate hydraulic cylinder for customers from Croatia.

Introduction to stern plate hydraulic cylinder:

Under normal circumstances, the stern plate hydraulic cylinder is composed of the rear end cover, body, piston, piston rod and front end cover and other main parts. In order to prevent the working medium from leaking out of the stern plate hydraulic cylinder or from the high pressure chamber to the low pressure chamber, a sealing device (sealing ring) is arranged between the stern plate hydraulic cylinder and the end cover, the piston and the piston rod, the piston and the stern plate hydraulic cylinder, the piston rod and the front end cover. A dustproof device is also provided on the outside of the front end cover. In order to prevent the piston from impacting the end cap when it moves rapidly to the end of the stroke, the end of the stern plate hydraulic cylinder can also be provided with a buffer device. If necessary, the exhaust device should be set in order to exhaust.

stern plate hydraulic cylinder head explanation: low pressure castings, medium and low pressure with HT300 gray iron, medium and high pressure with 35, 45 steel. When the stern plate hydraulic cylinder head itself is the guide sleeve of the piston rod, the stern plate hydraulic cylinder head is best cast iron. At the same time, brass, bronze or other wear-resistant materials should be fused on the guide surface. If the guide sleeve is pressed into the stern plate hydraulic cylinder head, the guide sleeve shall be wear-resistant cast iron, bronze or brass.

How to repair the stern plate hydraulic cylinder body when it is damaged: When the stern plate hydraulic cylinder has trace deformation and shallow tensile marks, the stern plate hydraulic cylinder is repaired by strong honing process. The heavy honing process can repair stern plate hydraulic cylinders up to 2.5 times out of tolerance than the original tolerance. It honed the parts with excessive size or shape error through a powerful honing machine, so that the overall size, shape tolerance and roughness of the stern plate hydraulic cylinder can meet the technical requirements.

The viscosity of the working oil used in the stern plate hydraulic cylinder is 29~74mm2/S, and ISO VG46 anti-wear hydraulic oil is recommended. Working oil temperature within the range of -20~80. C. When the ambient temperature and service temperature are low, the oil with lower viscosity can be selected.

Answers to some questions about stern plate hydraulic cylinder:

How to calculate cylinder speed?
If there is a throttle valve, the cylinder speed will be adjustable. When the throttle is fully opened, the speed of the cylinder reaches the maximum: maximum speed = oil pump displacement ÷ cylinder cavity cross-sectional area The displacement of the oil pump is a main indicator, which can be found on the nameplate, and some can also be known by the oil pump model; The cross-sectional area of the cylinder cavity can be easily calculated. Just make sure the units are the same. And because the cross-sectional area of the rod cavity and the rodless cavity of the cylinder is different, the speed of advance and retreat may also be different.

How to disassemble the cylinder?
Generally speaking, it is not difficult to disassemble the hydraulic cylinder, as long as you are careful, but you often encounter some small trouble in the disassembly process, because the disassembly process is not correct. In fact, this can be avoided, as long as you follow below points. 1. Before removing the hydraulic cylinder, the hydraulic circuit should be relieved of pressure, otherwise, when the oil pipe connected with the cylinder is loosened, the high-pressure oil in the circuit will be rapidly ejected. When the hydraulic pressure comes back, the handwheel or pressure regulating screw at the relief valve should be loosened first, so that the pressure oil is unloaded, and then the power supply or power source is cut off, so that the hydraulic device stops running. 2. Disassembly should prevent damage to the top thread of the piston rod, the oil thread and the chrome layer on the piston rod surface.