Oilgear D-3511 Legacy Variable Displacement Pump

Oilgear D-3511 Legacy Variable Displacement Pump

At Rexton Hydraulic, we provide sales, service, repair and technical support for the Oilgear D-3511 Legacy Variable Displacement Pump. Our team ensures correct pump selection, expert refurbishment and dependable aftermarket support.
 

  • Series: D Type Pumps
  • Displacement 21.36 – 802.96 cc/rev
  • Continous Pressure 1500 – 4000 psi
  • Maximum Speed 900 – 1800 RPM
  • Variable Displacements Piston Pump
  • Open Circuit Pump

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Oilgear D-3511 Legacy Variable Displacement Pump is designed as a heavy-duty, bidirectional hydraulic pump that can provide precise control of fluid flow, along with a long lifespan and functional reliability in open-loop hydraulic systems. The D-3511 model maintains the legacy of the radial rolling piston technology introduced by the D Series range of pumps offered by Oilgear, which has stood the test of time for several decades as a heavy-duty hydraulic fluid power component.

Based on variable displacement technology, the D-3511 adjusts its output flow rate depending on the demand of the system. Power is drawn depending on the amount of work done. It ensures that there is greater efficiency along with reduced heat generation and wastage of fluid in the hydraulic system. It provides instantaneous responses to changes in resistance without resorting to excessive throttling or orifice restriction found in other types of hydraulic systems.

Since it has a displacement of a maximum of 263.17 cc/rev, the Oilgear D-3511 ensures a constant flow of hydraulic fluid regardless of the operational conditions. The products operate at a speed of a maximum of 1200 RPM and can withstand a continuous pressure of up to 2500 psi. The design adopted by the products helps to eliminate any fluctuations in the flow of fluid.

The D-3511 has positive variable delivery control and high relief valves as standard features for the protection of the systems. The optional features can comprise one, two control systems, the gear pump relief valve for the auxiliary/pilot systems, and the Oilgear pintle check suction-return valves. The D-3511 pump can work efficiently in differential and non-differential two-way hydraulic systems, thereby eliminating the usage of control valves for direction and flow because of its built-in facilities for such processes.

Common uses for the Oilgear D-3511 include presses, processing machinery, material handling systems, and hydraulic power systems requiring high accuracy speed control and smooth reversal of direction of flow. The D-3511 can simplify hydraulic systems and reduce the need for electric control, thereby enhancing the reliability and maintainability of the overall system.

Technical Specifications

PVG FAMILY SPECIFICATIONS

FRAME SIZE MODEL B-FRAME C-FRAME D-FRAME
PVG-048 PVG-065 PVG-075 PVG-100 PVG-130 PVG-150 PVG-180
DRIVE Maximum (RPM) 2700 2700 2700 2400 2400 2400 2400
Minimum (RPM) 600 600 600 600 600 600 600
Torque to turn shaft (ft. lbs.) 9 9 9 24 24 40 50
Rotational Moment of Inertia (lbs.-in2) 21 21 21 50 47 150 152
OUTPUT1 Pressure (PSIA) Peak 5800 5800 4250 5800 4250 5800 5800
Continuous 5000 5000 3750 5000 3750 5000 5000
Minimum 100 100 100 100 100 100 100
Nominal Volume (GPM) at 1800 RPM and Rated Pressure For Full Displacement 21.1 28.8 33.3 42.4 57.6 63.0 78.0
CASE2 Maximum Pressure (PSI) w/ Standard Shaft Seal 25 25 25 25 25 25 25
Minimum Drain Line Hose Size #16 SAE #16 SAE #16 SAE #16 SAE #16 SAE #16 SAE #16 SAE
CONTROLS3 Minimum Pressure (PSI) Pressure Controls – Minimum Compensator Setting 200 200 200 200 200 250 250
Volume Controls (VS, VM) – Minimum Pilot Pressure 500 500 500 500 500 500 800
Maximum Pilot Pressure (PSI) Volume Control – VS 600 600 600 600 600 600 N/A
Volume Control – VM 1000 1000 1000 1000 1000 1000 1000
Stroking Rate (MSEC) at Rated Pressure, Pressure Controls (Minimum) On Stroke 40 40 40 40 40 45 45
Off Stroke 50 50 50 50 50 60 60
Volume Controls (VS, VM) On Stroke 250 250 250 250 250 250 250
Off Stroke 250 250 250 250 250 250 250
FLUID4 Viscosity (SSU) Minimum 65 65 65 65 65 65 65
Maximum 2000 2000 2000 2000 2000 2000 2000
TEMPERATURE5 Fluid Operating Range (F˜) 14 to 190 14 to 190 14 to 190 14 to 190 14 to 190 14 to 190 14 to 190
Fluid Minimum Starting (F˜) -40 -40 -40 -40 -40 -40 -40
Fluid Maximum at Case Drain Port (F˜) 230 230 230 230 230 230 230

Product Models