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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 3 year year

Product details

1. Product Definition & Function

TheMarine K3VL140 Hydraulic Pumpis avariable-displacement swashplate axial piston pumpdesigned by Kawasaki Heavy Industries (Japan) specifically for high-pressure hydraulic systems in marine and offshore engineering equipment. Its primary function is to convert mechanical energy into hydraulic energy via engine or motor drive, providing stable high-pressure oil supply for marine deck machinery (e.g., winches, capstans), steering gear systems, deck cranes, or propulsion-assist devices.

• Key Features:

• Variable Displacement: Adjusts flow rate via swashplate angle modulation to meet varying loads.

• High-Pressure Design: Rated pressure up to 35 MPa (40 MPa peak), suitable for heavy-duty marine applications.

• Compact Structure: Integrated design minimizes space occupation for confined engine rooms.

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2. Structural Composition & Working Principle

Core Components

1. Cylinder Block & Piston Assembly:

• Features 9 precision axial pistons with swashplate-driven reciprocation for oil suction/compression.

• Piston surfaces are hard-chrome plated for enhanced wear and corrosion resistance.

2. Swashplate & Variable Mechanism:

• Swashplate angle adjusted hydraulically or manually to vary piston stroke and displacement.

• Rapid variable response (<0.3 seconds) for dynamic load adaptation.

3. Port Plate & Sealing System:

• Bimetallic port plate optimizes oil distribution and minimizes leakage.

• Dynamic seals (e.g., V-rings) prevent high-pressure oil leakage, with a lifespan exceeding 8,000 hours.

4. Bearing & Lubrication System:

• Roller bearings support radial and axial loads on the main shaft.

• Integrated lubrication channels enable self-priming via hydraulic oil circulation.

Working Principle

• The input shaft rotates the cylinder block, driving pistons in a reciprocating motion via the swashplate.

• Pistons retract to draw in low-pressure oil and extend to compress oil to the high-pressure outlet.

• The variable mechanism adjusts swashplate tilt to regulate displacement (0–140 cc/rev), enabling precise flow/pressure control.

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3. Technical Specifications (Standard Model)

【表格】

Parameter Value

Model K3VL140

Displacement Range 0–140 cm³/rev (adjustable)

Rated Pressure 35 MPa (continuous)

Peak Pressure 40 MPa (short-term)

Speed Range 600–2,500 rpm

Flow (@1,800 rpm) 252 L/min (max displacement)

Weight ~120 kg (with variable mechanism)

Media Mineral-based hydraulic oil (ISO VG46/68)

Operating Temp. -20°C to +80°C (oil temperature)

Protection Class IP55 (dust/water resistant)

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4. Typical Applications

Marine Sector

• Deck Machinery: Hydraulic drive for winches, capstans, and deck cranes.

• Steering Systems: Provides high-pressure oil for rudder blade actuation, ensuring navigational stability.

• Propulsion Assist: Integrates with controllable-pitch propeller (CPP) systems to optimize thrust efficiency.

• Specialized Operations: Deep-sea drilling vessel rig lifting, ROV (Remotely Operated Vehicle) deployment for research ships.

Other Sectors

• Construction Machinery: Hydraulic power source for excavators and cranes (requires land-based adaptation).

• Industrial Equipment: Hydraulic systems for injection molding and die-casting machines (customized parameters needed).

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 Audited supplier

3 year

Address: Ningbo, China

Main Product: hydraulic motor , gear box, hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

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