Kawasaki K3VG280 Piston Pump Replacement | K3VG280-100RSV-4000 High Pressure Pump

Genlu Hydraulic proudly introduces our K3VG Series (comprising K3VG63, K3VG112, K3VG180, and K3VG280) high-pressure, swashplate-type axial piston pumps for heavy-duty industrial applications. Engineered to withstand continuous harsh environments with extreme reliability and extended operational life, this series is widely utilized in metal-forming presses, steel metallurgy, and heavy industrial power units. For the heavy-displacement configuration K3VG280-100RSV-4000, we have introduced rigorous metallurgy reinforcement and optimized valve plate fluid dynamics. Serving as the primary energy center for large industrial fluid drive systems, Genlu unequivocally guarantees 100% Drop-in Interchangeability in SAE/ISO mounting flange templates, driven shaft keyways/splines, main suction/discharge ports, and input torque-versus-pressure performance curves relative to Kawasaki KPM original products. Backed by our uncompromising 100% Simulation Load Testing, each K3VG series pump is verified under full system pressure to ensure optimized volumetric efficiency and controlled thermal limits, delivering relentless power for your cyclic manufacturing operations.

Technical Specifications 

• Product Series: Kawasaki K3VG Series Industrial High-Pressure Axial Piston Pump

• Complete Ordering Code: K3VG280-100RSV-4000

• Nominal Displacement: 280 cm³/rev

• Rated Operating Pressure: 34.3 MPa (343 bar)

• Peak Pressure Rating: 39.2 MPa (392 bar)

• Max Rated Speed (Self-priming): 1500 rpm

• Max Rated Speed (With Charge Pump): 2000 rpm

• Control Mechanism: RSV (Electro-hydraulic proportional displacement control with regulator valve block)

• Rotation Direction: R (Clockwise, viewed from shaft end)

• Primary Sealing Compound: Fluorocarbon (FKM / Viton, superior thermal and chemical fluid resistance)

Key Technical Advantages:

• Superior Volumetric Efficiency Under High Pressure: Engineered for continuous 34.3 MPa operation, the piston-to-cylinder bore clearance is precision-honed to micron tolerances. Paired with a hydrostatically balanced piston shoe layout, it preserves a robust fluid film under immense loads, sustaining volumetric efficiency above 95%.

• High-Ductility Cast Iron Monoblock Housing: Heavy-gauge ductile iron housing cast with internal reinforcing ribs optimized through FEA (Finite Element Analysis). The casing easily absorbs structural strain from pressure ripples up to 39.2 MPa while dampening fluid-borne acoustic vibrations.

• Bimetallic Vacuum-Sintered Valve Plate: The valve plate surface utilizes premium bimetallic bronze vacuum-sintered onto a steel backing. Custom-profiled decompression notch geometry smoothly transitions fluid between low and high pressure zones, mitigating cavitation erosion and hydraulic shock.

• Heavy-Duty High-Rigidity Bearing Array: Outfitted with robust, high-load tapered roller bearings designed to withstand heavy alternating radial and axial forces generated by the swashplate tilt mechanism. This enables the pump to operate reliably under full load, significantly extending the Mean Time Between Overhauls (MTBO).

Application Areas:

• Heavy-Duty Metal Forming & Forging: Main hydraulic supply for large four-column hydraulic presses, metal scrap balers, and heavy plate/tube extrusion machinery.

• Iron & Steel Industrial Complexes: Primary fluid power for steel rolling mills, blast furnace top equipment controls, and high-pressure mineral crushing stations.

• Marine & Offshore Engineering: Main hydraulic drive loops for massive deck cranes, marine mooring winches, and heavy-duty steering gear systems.

Expert Maintenance Tips:

• Mandatory Pre-Commissioning Case Priming: The K3VG280 pump housing has a substantial internal cavity volume. Prior to initial system startup, you must pre-fill the pump case with clean hydraulic oil via the highest drain port (filling at least 70% of the internal cavity). Never start the pump dry, as this will destroy the slipper-to-swashplate interface within seconds.

• Dedicated Case Drain Line Routing: The case drain plumbing must be adequately sized (minimum 3/4 inch recommended) and piped directly back to the reservoir without any restrictions or connection to the main system return line. Ensure the internal housing pressure remains strictly below 0.1 MPa during operation to protect the front shaft seal from blowout leakage.

• Strict Monitoring of Fluid Cleanliness & Temperature: We mandate high-pressure line filters with a rating of 10μm or finer, rigidly maintaining fluid cleanliness to ISO 4406 18/16/13. Keep operational oil temperatures within the 30°C to 60°C range. Temperatures exceeding 80°C thin the lubricating oil film, causing accelerated mechanical wear.