Shimadzu KFP Series Gear Pump | KFP3245 KFP3260 KFP2217 | High-Pressure Hydraulic Pump

Chengyuan Hydraulic presents the KFP Series axial pressure-compensated gear pumps, meticulously engineered as professional-grade replacements for Shimadzu industrial standards. This range, covering models such as KFP3245, KFP3260, and KFP22, is a primary choice for forklifts (Toyota, Mitsubishi, Komatsu), construction machinery, and specialized vocational vehicles.

Chengyuan ensures 100% Drop-in Interchangeability with original Shimadzu specifications regarding mounting flanges, shafts, and port configurations. Utilizing high-strength aluminum bodies and precision-ground gears, combined with our signature 100% Simulation Load Testing, each KFP pump is validated to deliver peak volumetric efficiency and durability under pressures exceeding 21 MPa.

Technical Specifications 

• Series: KFP22 / KFP32 / KFP41

• Displacement Range: 16 $cm^3/rev$ to 100 $cm^3/rev$ (e.g., KFP3245 = 45cc)

• Rated Pressure: 21 MPa (210 Bar)

• Peak Pressure: 25 MPa (250 Bar)

• Rated Speed: 500 – 3000 rpm

• Rotation: R (Clockwise) or L (Counter-Clockwise) viewed from shaft end

• Mounting: SAE Standard 2-Bolt or 4-Bolt Flange

• Control Type: Fixed Displacement

• Shaft Options: Straight Keyed or Splined

• Body Material: High-strength, anti-fatigue aluminum alloy

Key Technical Advantages:

• Three-Piece High-Pressure Build: The pump utilizes a three-piece extruded aluminum housing (front cover, center body, rear cover) capable of withstanding extreme transient pressure spikes without structural deformation.

• Axial Pressure Compensation: Floating side plates use system pressure to automatically balance clearances between gear faces. This design maintains over 90% volumetric efficiency throughout the pump’s entire service life.

• DU Self-Lubricating Bushings: Equipped with high-performance composite DU bearings, the unit offers superior radial load capacity and prevents journal seizing even during high-frequency, heavy-load cycles.

• Low Noise & Pulsation Technology: Gear teeth profiles are optimized through fluid dynamics to minimize flow pulsation, resulting in an operating noise level 3-5 dB(A) lower than conventional gear pumps.

Application Areas:

• Material Handling: Main lift pumps for 1.5t to 10t forklifts (Toyota, Mitsubishi, Komatsu).

• Agricultural Machinery: Hydraulic steering and lifting systems for tractors and harvesters.

• Municipal Vehicles: Hydraulic sources for refuse compactors, sweepers, and aerial work platforms.

• Industrial Power Units: Compact hydraulic systems and automated production lines.

Expert Maintenance Tips:

• Pre-Start Priming: Always fill the pump with clean hydraulic oil through the inlet port before the initial start-up. Use a “jog” start method until air is fully purged to prevent dry-friction wear on bearings.

• Viscosity & Temp Control: Use high-quality anti-wear hydraulic oil and maintain temperatures between 30°C and 80°C. Excessive heat reduces viscosity, leading to efficiency loss and increased wear.

• Shaft Alignment: Ensure the coaxiality between the pump and motor shaft is within 0.05mm. Never use a hammer to install couplings, as axial impact can damage the precision internal floating plates.