K3VL45/K3VL140/K3VL200 Kawasaki Piston Pump 320bar

Product Overview

The K3VL45/B-10RKS-PO/1-L1, K3VL45/B-10RMM-P0, K3VL140/B-10RKM-LO/1-H1 and K3VL200/B-1NRSS-PO are core models in the Kawasaki K3VL series of variable-displacement axial piston pumps. Designed with a swash-plate architecture for open-circuit mobile and industrial applications, these pumps deliver high volumetric efficiency, low pressure pulsation and quiet operation. Kawasaki’s proprietary mechanism significantly reduces pressure ripple. Available control options include load-sensing, pressure cut-off, horsepower limiting and remote adjustment. As genuine Kawasaki products, they offer excellent drop-in interchangeability. Every unit undergoes 100% simulated operating-condition testing to verify displacement, pressure capability and dynamic response, making them ideal for construction machinery, industrial hydraulics and precision control systems.

Technical Specifications 

• Model: K3VL45/B-10RKS-PO/1-L1, K3VL45/B-10RMM-P0, K3VL140/B-10RKM-LO/1-H1, K3VL200/B-1NRSS-PO
• Series: Kawasaki K3VL variable-displacement axial piston pump (open circuit)
• Displacement: K3VL45 = 45 cm³/rev; K3VL140 = 140 cm³/rev; K3VL200 = 200 cm³/rev
• Rated pressure: 32 MPa (320 bar)
• Peak pressure: 35 MPa (350 bar)
• Max self-priming speed: K3VL45 = 2700 rpm; K3VL140 = 2200 rpm; K3VL200 = 1900 rpm
• Maximum speed: K3VL45 = 3250 rpm; K3VL140 = 2500 rpm; K3VL200 = 2200 rpm
• Minimum operating speed: 600 rpm
• Control options: Pressure cut-off (P0), load-sensing + pressure cut-off (L0/L1), horsepower limiting and others
• Rotation: Standard right-hand (R, clockwise viewed from shaft end)
• Approximate weight: K3VL45 = 25 kg; K3VL140 = 65 kg; K3VL200 = 95 kg
• Case drain pressure: continuous 1 bar, peak 4 bar
• Fluid: Anti-wear mineral hydraulic oil; temperature range –20 °C to +95 °C; viscosity 10–1000 cSt
• Mounting flange: SAE standard (B/C/D/E depending on size)

Key Technical Advantages:

1. High volumetric efficiency (peak >90%) achieved through precision swash-plate machining and opposed-piston design, delivering high power density with minimal energy loss.
2. Proprietary pressure-pulsation suppression mechanism significantly reduces noise and vibration, improving system stability and operator comfort.
3. Wide range of control options (load-sensing, pressure cut-off, horsepower limiting, electro-proportional flow) enables remote and multi-function regulation for complex duty cycles.
4. Robust bearings and long-life design combined with excellent self-priming capability extend service intervals and reduce maintenance frequency.
5. Standardized interfaces and through-drive options support true drop-in interchangeability and multi-pump tandem configurations, minimizing equipment downtime.

Application Areas

• Main and auxiliary pumps for excavators, wheel loaders, cranes and other construction machinery
• Industrial hydraulic power units for injection molding machines, presses and machine tools
• Open-circuit systems on marine and port equipment
• Variable-displacement control on agricultural and specialty vehicles
• High-precision industrial test and servo-hydraulic circuits

Expert Maintenance Tips

Maintain stable inlet pressure (suction absolute pressure ≥0.1 MPa under self-priming conditions). Use recommended filtration (150-mesh suction, nominal 10 μm return) and keep fluid cleanliness at ISO 4406 18/15 or NAS Class 9. Fill the case and bleed air before first start-up; ensure shaft alignment and no axial load on the coupling. Monitor case-drain pressure and temperature routinely; replace filters and verify control-valve settings at scheduled intervals. Avoid prolonged operation above peak pressure. For long-term storage, fill with protective oil and rotate the shaft periodically. Always use genuine Kawasaki seals and control components when servicing to preserve volumetric efficiency and interchangeability.