83012957

The 83012957 unit is produced by Danfoss for the Open Circuit Piston Pumps series and converts mechanical drive power into regulated flow for hydraulic automation. It delivers 74 cm³ of fluid each revolution, providing a defined displacement for predictable actuator speed. Continuous operation at 310 bar is supported, giving the circuit a steady working limit for demanding machinery. A pressure-compensated, load-sensing control keeps output proportional to demand so excess energy is not wasted. Counter-clockwise rotation aligns with common engine PTO directions, and a 1.25 in drive shaft passes through a Viton seal that blocks hot oil from escaping the housing.

The compensator is preset to 310 bar, allowing the pump to cut back flow once that outlet pressure is reached, while a 20 bar load-sensing setting lets the controller react quickly to downstream pressure changes. An SAE-C four-bolt mounting flange positions the housing rigidly on transmission pads or pump stacks. Radial port orientation directs the suction and pressure lines outward for easy hose routing, and both ports use SAE O-ring connections that create repeatable seals after service work. These installation and control features help the 83012957 pump maintain stable pressure, adaptive flow, and leak-free performance in open circuit hydraulic systems.