Flender/Flender Gear Units/Bevel-helical gear reducer B4
The trend toward lowering gearbox manufactur- The trend toward lowering gearbox manufactur- The trend toward lowering gearbox manufactur-ing costs, while

at the same time allowing for ing costs, while at the same time allowing for ing costs, while at the

same time allowing for increased in-use productivity, places ever more increased in-use productivity, places ever more increased in-use productivity, places

ever more stringent demands on gear oils.stringent demands on gear oils.stringent demands on gear oils.cover STory Jean Van Rensselar /

Contributing EditorTrends in Industrial 2 Reserveboothspace:ExhibitboothapplicationformsavailableforSTLEs2 Todays machines are smaller, hotter and overloadedmaking proper lubricant selection even more critical. alarMing 3% of .. induSTrial coMPanieS recently surveyed said they experienced lubricant-re- lated gearbox failure within the last year.1 These failures were most likely related to extreme operat- ing temperatures that created break-point stress on such industrial gearbox parts as seals, bearings and gear teeth. These higher operating tempera- tures are precipitated by the demand for more power in smaller footprint and decreased oil volume. Todays equipment also needs to handle in-creased loads and deal with host of contaminants, including water. Deal-ing with these demanding conditions requires gear oil that is formulated to reduce stress in number of ways. The following are basic require- ments for industrial gear oils: Appropriateviscosity Oxidativeandthermalstability Solidload-carryingcapacity Demulsibility(theabilityto shed water) Resistancetofoaming Protectionagainstrustand corrosion. The difference between automotive and industrial gear oils is that indus- trial gear oils must perform in condi-tions and applications that vary sig-nifi cantly . Examples are the highly Gear Oils 1 Study conducted by Shell and cited at: http:// Germany gearsolutions HB series gearbox /article/detail/5/motion-impossible--without-the-