This article mainly introduces:

Spain hydraulic cylinder,trunnion cylinder manufacturer,trunnion cylinder

(Spain trunnion cylinder,produced by Hengyu Hydraulic Co., Ltd）

trunnion cylinder are widely used in Spain，because of long service life，smooth movement，high work efficiency.So our company has designed trunnion cylinder for customers from Spain.

Introduction to trunnion cylinder:

When the long-stroke trunnion cylinder rotates horizontally, the piston rod bends due to its own weight, causing the guide sleeve and piston to produce biased load, resulting in trunnion cylinder head seal damage, oil leakage, and piston sleep in the trunnion cylinder. The following measures can be taken: increase the piston plan to adjust the piston outer circle and process it into a convex drum, so that the piston can self-position, improve the force situation, and reduce and avoid pulling the trunnion cylinder; The piston and the piston rod are connected with a spherical joint.

The pressure of the sliding surface of the trunnion cylinder piston is too large, resulting in sintering. The piston tilts due to the weight of the piston rod, resulting in the phenomenon of non-stiffness, or the pressure of the sliding surface of the piston rises due to the action of the transverse load, which will cause sintering. In the design of the trunnion cylinder must study its working conditions, the length of the piston and bushing and the size of the clearance must be fully paid attention to.

The viscosity of the working oil used in the trunnion 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.

If the trunnion cylinder slips or crawls, please check whether there is astringency inside the trunnion cylinder, because the internal parts of the trunnion cylinder are improperly assembled, the parts are deformed, worn or the shape and position tolerance is excessive, the action resistance is too large, so that the piston speed of the trunnion cylinder changes with the different stroke position, and the slip or crawl occurs. Most of the reasons are due to poor assembly quality of parts, surface scars or sintered iron filings, so that the resistance increases, the speed decreases. For example, the piston is different from the piston rod or the piston rod is bent, the trunnion cylinder or the piston rod is offset from the mounting position of the guide rail, and the sealing ring is too tight or too loose. The solution is to repair or adjust, replace damaged parts and remove iron filings.

Answers to some questions about trunnion cylinder:

What is the meaning of cylinder HSGK01-100/70E-4111-1320?
hsg Double acting single piston rod hydraulic cylinder and front end cover are connected by internal clamp key 01 Design serial number 100 cylinder inner diameter 70 piston rod outer diameter e Pressure class code 16mpa4111 Front flange, rod end external thread, both ends with buffer, oil port connection is internal thread 1320 stroke.

How to calculate the speed of cylinder weight decline?
To reduce the weight of the cylinder, the necessary condition is that the weight of the piston rod + external load is greater than the friction between the seal ring and the cylinder. There are many reasons for this, first of all, consider the reasons of the cylinder itself, the piston in the cylinder and the sealing ring on the piston rod will play a reaction force on the weight of the cylinder (because of friction), which depends on the tightness of the sealing ring and the cylinder. Secondly, what is connected under the piston rod of the cylinder and how much weight there is. And the way the cylinders are arranged, is it completely vertical. Anyway, in fact, the most important thing is to see how much the bore of the oil hole of the piston rod cavity of your cylinder is. For example, if the hole in the lower chamber of the cylinder is small, as thin as a needle, then its descent rate will be slow.