PVXS-180-M-L-DF-0000-000 Vickers Piston Pump

The PVXS Series Heavy-Duty Axial Variable Piston Pumps (covering PVXS066, PVXS090, PVXS130, and PVXS180, with specific order code PVXS-180-M-L-DF-0000-000) are high-pressure fluid power pumps engineered for severe industrial open-circuit hydraulic systems. Manufactured strictly to Eaton Vickers OEM engineering standards, this unit provides 100% drop-in mechanical, hydraulic, and control port interchangeability. Featuring high-response DF (Load Sensing / Pressure and Flow Compensator) control and left-hand (CCW) rotation, it is constructed with a high-strength cast iron housing, hydrostatically balanced valve plate, and heavy-duty tapered roller bearings. It handles continuous 350 bar operating pressure with superior volumetric efficiency and minimal operating noise. Every pump is subjected to 100% factory bench testing under simulated full-load pressure and dynamic control conditions to guarantee a direct, reliable replacement for original Vickers units.

Technical Specifications 

• Full Model Code: PVXS180 / PVXS-180 (Part Code: PVXS-180-M-L-DF-0000-000; Series includes PVXS066, PVXS090, PVXS130)

• Nominal Displacement: 180 cm³/rev

• Rated Operating Pressure: 350 bar (35 MPa / 5000 psi)

• Peak Operating Pressure: 420 bar (42 MPa / 6000 psi)

• Max Rated Speed: 1800 RPM (at 1 bar absolute inlet pressure)

• Control Mode: DF Control (Load Sensing / Pressure & Flow Compensated)

• Rotation Direction: Left Hand / Counter-Clockwise (L / CCW, viewed from shaft end)

• Mounting & Porting: Standard SAE mounting flange with SAE 4-bolt high-pressure flange ports

• Net Weight: Approx. 170.0 kg

Key Technical Advantages

• 100% Drop-In Eaton Vickers Fit: Mounting dimensions, shaft splines, main SAE port flanges, and DF pilot control connections strictly match OEM Vickers specifications for seamless field replacement.

• Responsive DF Control & Energy Savings: Integrated DF load-sensing compensator dynamically adjusts pump displacement to match actual system demand, drastically reducing energy waste and oil heating.

• Hydrostatically Balanced High Efficiency: Features precision-ground, hydrostatically balanced valve plate and cylinder block surfaces ($Ra < 0.2\ \mu\text{m}$) that minimize internal leakage and sustain over 95% volumetric efficiency.

• 100% Factory Simulated Load Tested: Every unit is validated on automated test benches for full-pressure holding, displacement response, and case drain leakage prior to shipment.

Application Areas

• Heavy Metallurgy & Steel Mills: Rolling mill screw-down systems, blast furnace top drives, and continuous caster hydraulic power units.

• Heavy Forging & Pressing Equipment: Primary drive pumps for hydraulic presses, metal balers, and heavy scrap shears.

• Plastics & Injection Molding: Large injection molding machine high-pressure injection, clamping units, and blow molding equipment.

• Marine & Mining Machinery: Tunnel boring machine (TBM) thrust circuits, mining roadheaders, and marine deck winches.

Expert Maintenance Tips

• Mandatory Case Priming Before Startup: Always fill the pump housing with clean hydraulic oil (approx. 3.5 to 4.5 liters) through the uppermost drain port prior to initial startup to avoid dry friction on swashplate and slipper pads.

• Independent Low-Pressure Drain Line: Connect the case drain line directly and independently to the reservoir below fluid level. Keep case pressure strictly under 0.5 bar to preserve shaft seal integrity.

• Maintain Fluid Cleanliness: Maintain system fluid cleanliness to ISO 4406 18/16/13 (NAS Class 7) or better. Regularly replace high-pressure filter elements to ensure responsive, trouble-free operation of the DF control valves.