83012925

The 83012925 is a hydraulic pump produced by Danfoss within the Open Circuit Piston Pumps series. It supplies hydraulic flow for mobile or industrial actuators where variable pressure and load sensing are required. The pump uses a pressure compensated, load sensing control to match output flow to system demand and limit energy loss. A geometric displacement of 147 cm³ per revolution sets the volume of fluid moved each shaft turn, while a rated speed flow of 309 l/min provides the delivery needed for high duty circuits. Continuous input speeds up to 2475 rpm allow direct connection to diesel or electric prime movers without reduction gearing. Counter-clockwise shaft rotation defines how it couples to the drive side of the power train. A fixed load sense setting of 20 bar establishes the differential pressure that keeps inlet circuits charged. Maximum continuous pressure is 260 bar, giving the pump the capacity to feed cylinders and motors that operate at high working loads.

Mounting and line interfaces are standardized for quick replacement in existing rigs. A SAE-C four-bolt front flange aligns the housing with common bell-housings, and SAE O-ring ports on the casing simplify auxiliary case drain plumbing. The suction side accepts oil through a 2.5 inch four-bolt split flange inlet, minimizing restriction at high flow, while the discharge exits through a 1.25 inch four-bolt split flange outlet that withstands full system pressure. The pressure compensator is factory set to 260 bar so the control can limit outlet pressure when load sensing is inactive. A shaft can transmit up to 1150 N·m of torque, permitting the pump to deliver its rated output without mechanical overstress. Sealing at the drive interface is handled by a single Viton shaft seal that resists heat and mineral oil. These mechanical details complete the hydraulic characteristics introduced earlier and support reliable service in mobile construction and industrial machinery.