2. PRINCIPAL COMPONENTS AND FUNCTIONS in swashplate design for hydrostatic drive in an open circuit. Flow is proportional to drive speed and displacement. The flow can be steplessly changed by controlling the swashplate (13). For axial piston units with swashplate design, the pistons (11 the drive shaft (1). The A10VO, A10VSO, A10VNO, A10VSNO are variable pumps with axial piston rotary group ) are arranged axially with respect to 5 4 3 2 6 1 7 8 9 13 10 12 11 1 Drive shaft 2 Spring 3 Retaining plate 4 Stroke piston 5 Control valve 6 High-pressure side 11 Piston 12 Slipper pad 13 Swashplate Control plate 7 8 Port plate 9 Suction side 10 Cylinder 2-3