This article mainly introduces:

The Philippines hydraulic cylinder,spring return cylinder manufacturer,spring return cylinder

(The Philippines spring return cylinder,produced by Hengyu Group）

spring return cylinder are widely used in The Philippines，because of simple structure and reliable operation，excellent temperature resistance，no transmission clearance.So our company has designed spring return cylinder for customers from The Philippines.

Introduction to spring return cylinder:

The piston rod of the spring return 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.

Under normal circumstances, the spring return 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 spring return cylinder or from the high pressure chamber to the low pressure chamber, a sealing device (sealing ring) is arranged between the spring return cylinder and the end cover, the piston and the piston rod, the piston and the spring return 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 spring return cylinder can also be provided with a buffer device. If necessary, the exhaust device should be set in order to exhaust.

The commonly used buffer structure of the spring return cylinder is composed of a piston boss and a spring return cylinder head groove. When the piston moves close to the spring return cylinder head, it gradually enters the groove, and the oil in the groove is extruded through the gap between the boss and the groove, which increases the oil return resistance, produces the braking effect and realizes the buffer. Generally, a buffer mechanism should be used when the pressure is above 10MP.

Factors that should be considered when selecting the oil seal in the spring return cylinder: some specific factors should be taken into account when selecting the oil seal in the spring return cylinder, so as to have correct consideration and get accurate results, and then avoid wrong selection. The factors and aspects that should be taken into account are eight: spring return cylinder diameter, piston rod diameter, piston rod and piston groove size, spring return cylinder working pressure, spring return cylinder movement speed, hydraulic system oil temperature and spring return cylinder working environment.

Answers to some questions about spring return cylinder:

How to make 4 cylinders balance lifting weight at the same time?
The cost of the synchronous valve is lower, 4 cylinders need 3 synchronous valves, to be precise you can use a synchronous motor, but it is more expensive. There is another way, that is to install a throttle valve in each cylinder, respectively adjust the speed of the cylinder.

What is the cause of sound and vibration when the hydraulic cylinder is under load?
The main reason 1) may be that the load machinery has stuck phenomenon, and the resistance is large. 2) The hydraulic oil is not enough, or the filter is blocked by dirty things, and the oil is flooded. 3) There is a problem with the pump.