Ball screws for servo-electric actuators in powder presses
S-HTF series ball screws from NSK are for the first time enabling powder-press manufacturer Osterwalder AG to employ servo-electric drives on its larger machines, rather than conventional hydraulic drives. As a result, new systems such as the Osterwalder OPP 2000 multi-level machine with 2000kN press force, use around 80 per cent less energy than hydraulic counterparts of equivalent power output. In addition, pressed parts are produced with significantly higher dimensional accuracy, which reduces the amount of reworking and substantially lowers process and material costs.