Working process and disassembly of spherical oil bearing
Nov 26, 2022
Working process and disassembly of spherical oil bearing
Before using the bearing bush device, the lubricating oil wets the bearing material, and the bearing can work without lubricating oil or work without lubricating oil for a long time. This kind of bearing is called oil bearing. Ball bearings are made of metal powder and other antifriction material powder by confinement, sintering, molding and oil immersion, and have a porous structure.
After soaking in hot oil, the pores are filled with smooth oil. During operation, due to the suction action of journal rolling and conflict heating, the metal and oil expand, pushing the oil out of the pores, so the conflict surface has a smoothing effect. After the bearing cools, the oil is sucked back into the hole.
When spherical oil-bearing works, the shaft heats inversely due to conflict, the thermal expansion of the bearing reduces the porosity, and the lubricating oil spills into the bearing clearance. After the important officials stop rotating, the bearing bush cools, the air hole recovers, and the lubricating oil is sucked back into the air hole.
In order to more easily assemble and disassemble the oil bearing, the first tool must be selected. When assembling and disassembling bearings, the force applied should be stable and uniform, and there should be no collision. This requires the use of oil pressure or a tool capable of applying steady tension or pressure. When hammering is indeed necessary, it should also be cushioned with a soft and clast-free metal, such as a copper sleeve, which may have a lighter hammering force.
Secondly, when installing the bearing, when the bearing has just been installed in the correct position, stop applying force to ensure that the end face of the ring is close to the end face of the seat hole or the shaft shoulder, so as not to be squeezed too tight or installed in place. Under cumulative use, bearings will be more or less worn. In this case, we can use repair welding, casing insertion, pitting and other methods.
