Rexroth A4VG Series Axial Piston Variable Hydraulic Pump 56cc For Closed Circuit Mobile Machinery Key Features 1. Closed circuit hydrostatic transmission, nominal pressure 400 bar, peak pressure 450 bar 2. DA control configuration, stepless variable displacement 3. Integrated charge pump, pressure cut-off valve and overload relief valves 4. Smooth flow reversal, high volumetric efficiency under heavy load 5. Robust cast iron housing, shock-resistant, long service life 6. NBR