This article mainly introduces:

Pakistan hydraulic cylinder,servo cylinder manufacturer,servo cylinder

(Pakistan servo cylinder,produced by Hengyu Hydraulic Cylinder Factory）

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

Introduction to servo cylinder:

The body of the servo cylinder on the processing process requirements: the body of the servo cylinder is an important and essential part of the servo cylinder, because it has an irreplaceable role. The processing requirements for this part are very high, requiring that the surface roughness of the servo cylinder after processing should reach 0.4-0.8um, and the coaxiality and wear resistance requirements are also very high.

The viscosity of the working oil used in the servo 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.

Protection of the servo cylinder surface: During the dismantling process, safety protection should be carried out on the servo cylinder to prevent objects from falling and welding slag from falling to the surface, causing damage to the servo cylinder surface. In the process of propulsion, the damaged pipe segments should be prevented from falling and smashing, and the slurry remaining on the surface of the servo cylinder should be cleaned up in time.

If the piston rod and servo cylinder are stuck or the servo cylinder is blocked, at this time, no matter how to operate, the servo cylinder does not move or has little action. At this time, check whether the piston and piston rod seal is too tight, whether it enters the dirt and gum deposits: whether the shaft line of the piston rod and the servo cylinder is in the center, whether the wearing parts and seals are invalid, and whether the load is too large.

Answers to some questions about servo cylinder:

Servo cylinder control principle
The electro-hydraulic pulse servo cylinder is composed of a stepper motor, a three-position four-way servo valve, a mechanical feedback device (a wire carrier) and an oil lever. When the stepper motor gets a pulse signal, its output shaft rotates 1.5 or 3 degrees, the servo valve spool drives the wire to rotate at the same time, the valve spool moves and opens the reversing cylinder to output pressure oil, the piston moves and drives the lead screw to reverse rotate the valve spool back to the original position, and the servo valve stops output pressure oil in the center. At this time, the cylinder moves 0.1 or 0.2mm stroke, and the displacement and speed of the cylinder travel are determined according to the given value of the electrical pulse.

What is the cause of the sound of the excavator arm cylinder?
Hydraulic excavator cylinder includes boom cylinder, bucket rod cylinder and bucket cylinder, four cylinders. The sound of boom cylinder may be the wear of hydraulic cylinder block bushing, piston rod bushing and shaft pin. The main reason: poor lubrication, followed by improper clearance in the assembly process. Countermeasures: (1) Strictly lubricate each shaft pin at least once every 8 hours when the excavator is initially used for 100 hours and under harsh conditions; In other working conditions, lubricate each pin at least once every 50 hours. (2) If the lubricating oil passage is found to be blocked, it must be stopped for rectification. (3) Require assembly, replacement of all parts of the shaft pin, bushing strictly comply with the assembly testing standards and operating procedures.