Characteristics of the DC servo motors RS/RX/AXEM - high dynamics - wide speed control range - compact dimensions due to low power/weight ratio - optional low-cost motors with barium ferrite magnets or motors with very high performance density thanks to samarium cobalt magnets - long brush life due to generously dimensioned collector and long brushes - ball-bearings greased for life - optional with tachogenerator and/or incremental encoder - smooth running - insulation according to insulation class F, DIN VDE 0530, optional withstanding tropical conditions