Danfoss | 7000059
7000059
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The 7000059 pump belongs to the Open Circuit Piston Pumps series manufactured by Danfoss and supplies hydraulic power for automated machinery that relies on open-loop oil circulation. It uses a variable displacement mechanism to change swashplate angle and match flow to real-time actuator demand. Pressure-compensated control cuts back displacement when the system reaches the 250 bar compensation point, limiting heat generation and wasted input energy. A nominal displacement of 100 cc per revolution defines baseline output volume for medium-flow circuits, while a 310 bar maximum continuous pressure rating allows operation in high-pressure mobile or industrial equipment. Clockwise shaft rotation aligns the unit with common prime movers, and a single Viton shaft seal resists hot hydraulic fluid to prevent leakage at the drive end. Torque is transmitted through a 14-tooth, 12⁄24-pitch spline so the pump can couple directly to standard SAE drives.
A radial endcap supports the cylinder block evenly around its circumference, helping the pistons track smoothly during high-pressure cycles. Mounting is handled through a SAE-C four-bolt front flange that positions the housing securely against gearboxes or adapters. SAE O-ring housing ports provide reliable static sealing between the pump case and external manifolds. The inlet connection is a 2.5-inch four-bolt split flange that accommodates high-volume, low-velocity oil flow and minimizes cavitation risk, whereas discharge oil exits through a 1.25-inch four-bolt split flange sized for high-pressure delivery without excessive line losses. A 0.5-inch threaded service port lets technicians attach gauges or pilot lines for system monitoring. Together, these porting features simplify installation and ensure consistent fluid handling in automated hydraulic platforms.
Technical Specifications
Control Type
Pressure Compensated
Displacement Type
Variable
Endcap Type
Radial
Front Flange
SAE-C 4-Bolt
Housing Ports
SAE O-Ring
Inlet Port Size
2.5 in
Inlet Port Type
4-Bolt Split Flange
Max Continuous Pressure
310 bar
Nominal Displacement
100 cc/rev
Outlet Port Size
1.25 in
Outlet Port Type
4-Bolt Split Flange
Port Thread Size
0.5 in
Pressure Comp Setting
250 bar
Rotation
Clockwise
Shaft Seal
Single Viton
Shaft Spline
14 Tooth 12/24 Pitch
1620 Old Apex Road
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