[de] On the Use of high-speed Cylindrical Roller Bearings of the Type INA ZSL/LSL in "traction" locomotive's gearboxes. This study and its conclusions emphasize the question of underloaded bearings at very high speeds, bad lubrication conditions and put in evidence a new way to avoid the effects of sliding, skidding and their effects such as "smearing" within high-speed stages of the gearboxes. Test rig, practical results and case study was presented in detail showing the working behavior of these solutions and tending to draw-up some guidelines to avoid any issues in such kind of industrial hard working conditions (In German)