(earring type cylinder,produced by Hengyu Hydraulic Cylinder Factory）

earring type cylinder are widely used ，because of high work efficiency，excellent fatigue and impact resistance，no need for deceleration device.So our company has designed earring type cylinder for our customers.

Introduction to earring type cylinder:

The definition of the minimum starting pressure of the earring type cylinder refers to the minimum working pressure of the earring type cylinder in the no-load state, which is a comprehensive index reflecting the manufacturing and assembly accuracy of the earring type cylinder parts and the size of the sealing friction.

The quality of the earring type cylinder can not be ignored in the purchase of the earring type cylinder. The earring type cylinder is the main component of the earring type cylinder, the single pillar for mining, the hydraulic support, the gun tube and other products, and its processing quality directly affects the life and reliability of the entire product. earring type cylinder processing requirements are high, its internal surface roughness requirements are Ra0.4 ~ 0.8μm, the coaxiality, wear resistance requirements are strict. The basic feature of earring type cylinder is deep hole processing, which has always troubled the processing personnel.

The difference between the plunger earring type cylinder and the piston earring type cylinder is that the piston in the earring type cylinder is replaced by a shaft plunger, which is used in hydraulic transmission requiring a long mechanical stroke, and can only input pressure oil from one direction, pressurize in a single direction, and form a thrust to push the plunger to move. The return trip of the plunger depends on the plunger itself to fall, and some rely on the spring to push back to the original position. Usually used plunger type earring type cylinder, its inner hole does not need mechanical finishing, as long as the plunger round grinding can be assembled.

The difference between the integral earring type cylinder and the split earring type cylinder: The integral earring type cylinder and the split earring type cylinder in the earring type cylinder are two different earring type cylinders, and they are very different. The whole earring type cylinder, which is cast in one body, is not prone to problems such as oil leakage; The split earring type cylinder is welded twice, so if it is not handled well at the welding, it is prone to problems such as oil leakage and earring type cylinder damage. Therefore, it is obvious that the answer to this question is for difference.

Answers to some questions about earring type cylinder:

How to design the guide sleeve of cylinder diameter 400?
The purpose of the guide sleeve is to guide and seal. Therefore, it is necessary to look at the speed of the piston rod, working pressure and radial force. High speed, medium pressure, no (or very little) radial force, with a Steseal. Low speed and heavy load, medium radial force, combined seal. High speed and heavy load, large radial force, sealed with DU sleeve + copper ring + combination. The combination seal must have a lubricating oil passage, and a seal must be added to the outside of the oil passage.

How to produce good quality hydraulic cylinder?
According to the principle of quality control, it is considered from five aspects: people, machine, material, method and environment. 1, People, refers to the processing and assembly operators. Their skills, professional qualifications, literacy should meet the requirements of production. For example, do your machining workers have the required grade certificate? Do your welders have welding certificate? 2, Machine, refers to your production equipment. Production cylinders have requirements for processing equipment. For example, the piston rod requires chrome grinding. Can your equipment meet the need? 3, Material. The material you use should meet the quality requirements. For example, the sealing ring of PARK and domestic goods is different. Material is also very important. 4. Method refers to the process method. Do your processing and assembly processes meet the requirements? 5, Environment. The environment shall be neat and orderly, clean and hygienic. It is especially important for the hydraulic cylinder production enterprise environment. Can your assembly shop site be clean and dust-free? Quality inspection is also a focus of control. Products should do pressure test, leakage test. The test pressure should reach 1.25 times the design pressure. If you can't maintain pressure, what about quality? You may not be able to do the whole process of cylinder production, you can take the method of OEM. Taking advantage of the strengths of specialized manufacturers, you contract out what you need and then assemble it yourself. But the principle of quality control is the same.