11317220

The 11317220 open circuit piston pump is produced by Danfoss within the Open Circuit Piston Pumps series and is intended to convert mechanical input into controlled hydraulic energy for mobile and industrial automation. The unit delivers 30 cm³ per revolution, defining the flow rate that feeds actuators each time the shaft turns. Clockwise rotation aligns with prime movers that follow right-hand conventions. A continuous pressure capability of 260 bar supports high-duty cycles, while pressure-compensated control automatically trims displacement when demand drops. This control relies on a pressure compensation setting fixed at 180 bar to begin throttling and a standard gain orifice that moderates the response of the compensator spool, keeping pressure fluctuations within a narrow band during transient load changes.

Mechanical integration is handled by an SAE-B 2-bolt mounting flange, allowing direct coupling to common pump pads, and by SAE O-Ring Boss 7/8-14 housing ports that secure inlet and outlet lines without external gaskets. A Viton (FKM) shaft seal keeps hydraulic oil separated from the drive environment and tolerates elevated fluid temperatures. The design omits a choke orifice, so the pilot flow path remains unrestricted for faster compensator movement. It also ships without a displacement limiter, so the full stroke range remains available whenever the control loop calls for maximum output. These features complete the hydraulic profile needed for precise, pressure-stable automation circuits that depend on rapid response and reliable sealing.