In the hydraulic system and its system, sealing device used to prevent leakage of working medium and outside dust and foreign bodies.Which plays a role of sealing components, namely seals.
Leakage will cause the waste of working medium, machine and environment, and even cause the failure of the mechanism operation and equipment accidents。
Leak can cause a sharp drop in volumetric efficiency of the hydraulic system, short of the required working pressure, can't even work。
Invasion of tiny dust particles in the system and can cause or exacerbate the hydraulic friction pair of wear and tear, further lead to leakage。
Therefore, seals and sealing device is an important component of hydraulic equipment.Its working reliability and service life, is to measure the hydraulic system is an important indicator of good or bad。
Skeleton self-tightening rubber oil seal installation considerations
Before installation of oil seal, you must check whether the journal surface is too rough, with or without scar, especially with skull axial long scars.If too rough surface of the journal, is easy to damage the oil seal or accelerated wear lip is 1:3, undermine its sealing performance.If the journal surface due to improper disassembling blunt wounds, serious can make oil seal lip and shaft neck surface joint is lax, cause the oil leakage.The above two situations, can again after the scar of surfacing welding in accordance with the provisions on the shaft neck size of lathe car round, or change the new shaft.If the journal only metal burrs or shaft head flash, etc., the available file grinding smooth, in case of hurt when you install oil seal oil seal lip.
Check whether there is any broken on oil seal lip, injury or oil corrosion, if you have these bad phenomenon, a new oil seal should be replaced.
Besides gap seal, all is the use of rubber seals, that two adjacent coupling surface to seal the gap between control liquid can pass under the minimum clearance.
In the contact seal, divided into type sealing pressure tight seal and sealing type self-tightening seal (that is, the lip seal) two kinds.
The role of the seal is A closed enclosure the crack of the oil, and to prevent dust, sand and other filth from invading as cases of indoor units, but if the installation or improper use, easy to cause the oil leakage, affect the normal work of the machine, 75 - A cause burn bearings, and gears, wring the shaft or other serious problems.
haley hao