Avoiding the stick-slip effect

Bornemann Gewindetechnik GmbH & Co. KG, based in Delligsen, Lower Saxony, has been producing threaded spindles and screw conveyors for more than 25 years. One of their main products is ready-to-install trapezoidal spindle drives for heavy-duty lifting gear, as used to lift rail vehicles. Constant lubrication of the load-bearing flanks of the thread profiles is essential for spindle lift drives, as insufficient lubrication can lead to increased wear and overheating as well as the socalled stick-slip effect.