INFLUENCES ON THE WEAR BEHAVIOR OF GREASE LUBRICATED GEARS OPERATED WITH DIP AND SPRAY LUBRICATION

摘要

The international standard ISO 14635-3 [1] offers a method to investigate the wear behavior of grease lubricated gears in the FZG back-to-back test rig. This standardized test is run with dip lubrication Grease thickener, base oil viscosity and lubricant additives are known to have significant influence on the wear behavior. Some studies have also identified the lubrication supply mechanisms 'channeling' and 'circulating' to affect the wear intensity considerably. Large open gear drives, however, are often spray lubricated It is uncertain, to what extent the test results with dip lubrication apply to spray lubricated gear drives Within a research project (see acknowledgments) and a Master's Thesis [6], comparative tests have been performed, showing the effects of different lubrication types on the wear behavior of gears A test rig was modified and the bulk temperature was measured via an infrared sensor. Under nominally equivalent tnbological test conditions, spray lubrication has been found to reduce gear wear significantly compared to dip lubrication.