Analysis of affecting the service life of KOYO needle bearing maintenance and maintenance knowledge - bearing
In order to make the KOYO needle bearing parts quenching tempering after large surface residual compressive stress, could pass infiltration during quenching heating carbon or nitriding atmosphere, on the surface carburizing or nitriding for a short period of time.
Because the steel quenching when heated austenitic actual carbon content is not high, far lower than on the phase diagram shows the equilibrium concentration, so it can absorb carbon (
According to different purposes, it is a necessary choice for precision, clearance, and keep the frame structure, meet the requirements of the lubricating grease, special design of the bearing.
However, choosing bearing no certain order, rules, priority should be given to KOYO needle bearing the required conditions, performance, and related matters, especially the practical.
For the KOYO needle roller bearing and keep its long-term performance into full play, must earnestly to do regular maintenance (
Through proper periodic inspection, do early detection of fault, prevent accident arrangement is very important to increase productivity and efficiency.
Lubrication methods: KOYO needle bearing lubrication method, divided into grease lubrication and oil lubrication.
In order to make the bearing function well, first of all, to choose suitable for conditions of use, the purpose of lubrication method.
If only consider lubrication and oil lubrication.
Grease lubrication, however, with the surrounding structure can simplify the KOYO needle bearing special features, compare the pros and cons of grease lubrication and oil lubrication.
When the original organization must be in the steel, the carbon content of quenched martensite (
The austenite after quenching heating carbon content)
, residual austenite and the body not dissolve carbide mainly depends on the amount of quenching heating temperature and holding time, as the quenching heating temperature increased,
A certain time)
The decrease in the number of, not soluble in steel carbide (
Quenching martensite increased carbon content)
, increasing number of retained austenite, hardness first increases with the increasing of quenching temperature, peak and decreased and then increased with the temperature.
As long as as much as possible in order to keep intact the original performance of bearing, to maintain, maintenance, in the first place, to prevent accidents, ensure the reliability of operation, improve productivity and economy.
Corresponding mechanical operation and maintenance standards, on a regular basis, the best conditions.
Including monitoring running state, supplement or replace the lubricant, regular check cleared.
As the problem of maintenance operations, has KOYO needle bearing rotation, vibration, temperature, lubrication condition, and so on.