This article mainly introduces:

France hydraulic cylinder,spring return cylinder manufacturer,spring return cylinder

(France spring return cylinder,produced by Hengyu Hydraulic Co., Ltd）

spring return cylinder are widely used in France，because of excellent fatigue and impact resistance，no need for deceleration device，long service life.So our company has designed spring return cylinder for customers from France.

Introduction to spring return cylinder:

Disassembly spring return cylinder: When disassembly spring return cylinder, strictly prevent damage to the screw thread at the top of the piston rod, the screw thread of the spring return cylinder head and the surface of the piston rod. It should also be noted that the piston cannot be played out from the spring return cylinder.

When using the spring return cylinder product, be sure to operate safely in accordance with the specification documents provided by the manufacturer, and pay attention to protecting the spring return cylinder block. If the spring return cylinder block is damaged, it will cause adverse consequences: ① The material debris extruded from the scratch groove will be embedded in the seal, which may cause new scratch area marks while damaging the working parts of the seal during operation. ② Deterioration of the surface roughness of the inner wall of the spring return cylinder, increase friction, easy to produce crawling phenomenon. ③ Increase the internal leakage of the spring return cylinder, so that the working efficiency of the spring return cylinder is reduced.

When the spring return cylinder is disassembled due to oil leakage and other faults, the position of the piston should be moved to any end position of the spring return cylinder by applying liquid pressure. Improper tapping and sudden drop should be avoided during disassembly.

The assembly work of the spring return cylinder has a great impact on the quality of the spring return cylinder: each part must be carefully cleaned before assembly; To correctly install the sealing device everywhere: when installing the sealing ring, pay attention to its installation direction to avoid oil leakage due to installation, and its lip should be equipped with a pressure oil chamber. In addition, because it is a YX-shaped sealing ring, it is necessary to pay attention to distinguish between shaft and hole use, do not install wrong; Because the sealing device is matched with the sliding surface, an appropriate amount of hydraulic oil should be applied during assembly; The special wrench should be used when the threaded coupling is tightened, and the torque should meet the standard requirements; After the piston and piston rod are assembled, it is necessary to measure whether the coaxiality and straightness on the full length are out of whack. After assembly, there should be no blocking sensation and uneven resistance when the piston assembly moves.

Answers to some questions about spring return cylinder:

How big is a 300-ton cylinder piston?
The rated pressure of the oil pump is 31.5 mpa, the nominal pressure of the hydraulic press is 3150 kN, then the calculated cross-sectional area of the cylinder: S=3150000/31500000=0.1 square meters diameter is: 2* root sign (0.1/3.14) =2*0.178 m =0.356 m 3150 kN hydraulic press is commonly equipped with 31.5 mpa 63 l/min axial piston pump. There are many variable forms of axial piston pump, and the motor size of the pump with the same flow and pressure is not uniform. 31.5 mpa 63 L/min automatic variable pump, can be equipped with 15 kW 4 stage motor; The manual variable pump needs to be equipped with 22 kW 4-stage motor.

How to limit cylinder push rod rotation?
In general, the push-rod rotation can be limited after the push-rod is connected to the pushed mechanism. For example, the push rod is hinged with the push mechanism, or the push mechanism itself is guided, which can limit the rotation of the push rod.