ELEKTRA-evo in “plus“ configuration, is characterized by more external grinding spindle-motor units, capable of carrying wheels in “tandem” or opposite position (with diameters up to 508 mm) and with one (or more) int......ELEKTRA-evo in “plus“ configuration, is characterized by more external grinding spindle-motor units, capable of carrying wheels in “tandem” or opposite position (with diameters up to 508 mm) and with one (or more) internal grinding spindle units, with integrated motor. In total, 2 configurations are available: L/I/R with 2 external grinding wheels + 1 internal grinding unit, L/L with 2 external grinding wheels. Wheelhead swivelling is automatic and controlled by CNC with the B-axis, with pneumatic lift assistance and programmable stepless swing range.