This article mainly introduces:

Pakistan hydraulic cylinder,die cast hydraulic cylinder manufacturer,die cast hydraulic cylinder

(Pakistan die cast hydraulic cylinder,produced by Hengyu Hydraulic Cylinder Factory）

die cast hydraulic cylinder are widely used in Pakistan，because of no need for deceleration device，long service life，smooth movement.So our company has designed die cast hydraulic cylinder for customers from Pakistan.

Introduction to die cast hydraulic cylinder:

The definition of the minimum stable speed refers to the minimum movement speed of the die cast hydraulic cylinder without crawling phenomenon when the full load is moving, it has no uniform indicator, and the die cast hydraulic cylinder that undertakes different work has different requirements for the minimum stable speed.

The piston rod of the die cast hydraulic cylinder has two kinds of solid rod and hollow rod, and one end of the hollow piston rod needs to be set aside for welding and heat treatment. The solid piston rod material is 35, 45 steel, and the hollow piston rod material is 35, 45 seamless steel pipe. After rough machining, the piston rod is conditioned to 229~285HB in India, and if necessary, the hardness is 45~55HRC after high-frequency quenching.

The die cast hydraulic cylinder should be used as far as possible to avoid the transverse force, sometimes the piston rod to bear the transverse load is too large, especially do not force or pull the die cast hydraulic cylinder, bite. Elimination method: When installing the die cast hydraulic cylinder, ensure that the axis position of the die cast hydraulic cylinder is consistent with the direction of movement; Make the load borne by the die cast hydraulic cylinder as far as possible through the die cast hydraulic cylinder axis, to avoid the phenomenon of eccentricity.

The die cast hydraulic cylinder is mainly composed of body, piston, piston rod, die cast hydraulic cylinder head, die cast hydraulic cylinder bottom, piston rod head and related auxiliary devices. The piston divides the die cast hydraulic cylinder into two chambers, and moves reciprocally in the die cast 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 die cast hydraulic cylinder head, due to the existence of the gap, it is easy to produce external leakage phenomenon, and the dust can enter the die cast 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 die cast 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 die cast hydraulic cylinder bottom and the die cast hydraulic cylinder head is serious, so the buffer deceleration should be set at both ends of the die cast hydraulic cylinder The working medium of the die cast hydraulic cylinder: because it works at room temperature, the ordinary oil-type hydraulic oil can be selected; die cast 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 die cast hydraulic cylinder: The buffer structure of the die cast hydraulic cylinder is to prevent the piston from colliding with the die cast hydraulic cylinder head at the end of the stroke.

Answers to some questions about die cast hydraulic cylinder:

Why the lifting cylinder falling by itself?
May be there is a pressure relief point. Check and repair the following parts: whether there is oil leakage in the transparent pipe at the top of the cylinder: the cylinder oil seal is broken, and the cylinder and oil seal need to be replaced; No: The multiway valve has pressure relief and needs to be repaired. Maintenance in accordance with routine maintenance items can reduce mechanical failures: 1. Check whether the thermostat works normally. 2, check the transmission shift work is normal. 3. Check the tightness of the fan belt. 4, check whether the diesel tank oil inlet filter is blocked or damaged, and clean or replace the filter. 5. Check and adjust the valve clearance.

What valve is used to control cylinder expansion?
Mainly use reversing valve, but the details of the control need hydraulic control valve, hydraulic control valve can be divided into direction control valve, pressure control valve, flow control valve. The valve controls the expansion of the cylinder is the direction control valve, that is, the reversing valve. What is the meaning of two-position three-way and three-position four-way of the reversing valve? Usually according to the different working positions that can stay after the spool is moved, it can be divided into: two-position valves, three-position valves and multi-position valves. According to the number of different slide valve channels can be divided into: two-way valve, three-way valve, four-way valve, five-way valve and multi-way valve. The name of the reversing valve is called the multi-position and multi-pass reversing valve according to its working position and the number of channels.