Danfoss | 83012244
83012244
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The 83012244 hydraulic unit belongs to the Open Circuit Piston Pumps series from Danfoss and is intended to supply pressurized oil for mobile machine actuation. It delivers 147 cm³ per revolution, providing a defined flow rate proportional to shaft speed. A continuous pressure capability of 260 bar lets the circuit operate heavy cylinders without cycling relief valves. The pump turns counterclockwise, suiting prime movers that share that rotational direction. Power is transmitted through a 13-tooth, 8/16 pitch spline, and the mounting face follows the SAE-C four-bolt pattern for straightforward engine or gearbox attachment. On the suction side, a 2.5-inch inlet port presents low velocity entry to minimize cavitation during high demand.
Hydraulic discharge leaves through a 1.25-inch outlet port, matching common pressure hose sizes for compact mobile frames. A load-sense setting of 20 bar maintains standby compensation so the pump only strokes when downstream demand rises, while a 100 bar pressure compensator value establishes the upper limit for circuit pressure during normal duty. The housing uses SAE O-ring ports to simplify sealing and reduce assembly time. A 0.3 mm equivalent bleed orifice removes trapped oil from the control gallery to enhance response stability. Fluid retention is secured by a single Viton shaft seal that withstands hot oil and biodiesel blends encountered in field equipment.
Technical Specifications
Bleed Orifice
0.3 mm Eq
Continuous Pressure
260 bar
Displacement
147 cm3/rev
Front Flange
SAE-C 4-Bolt
Housing Port Type
SAE O-Ring
Inlet Port Size
2.5 in
Load Sense Setting
20 bar
Outlet Port Size
1.25 in
Pressure Comp Setting
100 bar
Rotation
Counterclockwise
Shaft Seal
Single Viton
Shaft Spline
13-Tooth, 8/16 Pitch
1620 Old Apex Road
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