Five functions bearing grease and the harm of inferior oil - bearing knowledge

Bearing oil is a precision machine tool spindle bearing special lubricating oil and similar equipment, it is to ensure the accuracy of the spindle work and use of performance, prolong its service life plays a very important role. So the selection of lubricating oil is extremely important. ( A) 。 Lubricating oil five functions: a. Lubrication: provide separate friction on the surface of the lubricating oil film, cold start wear accounted for 70% of overall engine wear. b。 Cleaning: down from INA bearing lubrication part pollutants to clean, and dispersed into very small particles. c。 Cooling: reduce because of the heat generated by the friction, to take away heat through the circulation and cooling. d。 Corrosion protection: to prevent air and water corrosion of components. e. Seal: preventing gas channeling. Good lubricating oil has five functions above, but if use bad quality or improper use of lubricating oil, can bring some problems to the engine. ( 2) 。 The harm of inferior oil a. The lubricating oil burning bush: if choose quality is bad, or choose the wrong lubricant viscosity, lubrication effect is bad. And low oil pressure, engine oil, cooling system failure and deficiency can cause the engine is overheating. In this case, high speed, is easy to INA bearing damage, commonly known as the 'burn'. In addition, if you use inferior oil filter or not timely replacement of oil filter, caught in the meantime, will cause the impurities caused 'burn'. b。 Snap ring: if the lubricating oil clean dispersion is not good, after long-term use will produce carbon deposit around the ring, and serious when can cause the piston ring formation stuck or broken. c。 The oil consumption is too large, if the wear resistance of lubricating oil is not good, will lead to abrasion between piston ring and cylinder, oil scraper ring effect is abate, make the oil into the combustion chamber for combustion, exhaust pipe at blue smoke phenomenon. If the bad seal, valve oil baffle ring of engine failure, etc. Can also cause the oil leakage, also can accelerate the consumption of oil. d。 Machine oil lamp alarm: in the event of this kind of phenomenon is mainly in the following several aspects to find reasons: lack of lubricating oil, Add) ; The oil induction plug damage ( Replacement) ; Oil pump filter clogging ( Cleaning) ; Lubricating oil viscosity ( Replace lubricating oil or examined for fuel dilution and engine overheating) ; The oil pressure limiting valve spring failure ( Clean replacement) 。