Discover the A4VSO180DFR/30R-PZB13N00 and A4VSO180DRG/30R-VPB13N00 German Rexroth high-pressure variable axial piston pumps, designed for excavator hydraulic systems. These pumps feature a cast iron construction, 31.5MPA nominal pressure, and are ideal for construction machinery. Learn about their working ports, seals, and control modes in this detailed overview.