Marzocchi KP30 Series Hydraulic Gear Pump Replacement | KP30.22 KP30.27 KP30.34

Genlu Hydraulic proudly offers our premium KP30 Series hydraulic gear pumps, precision-engineered as a high-performance alternative to Marzocchi KP30 architectures. Trusted for their reliability in both industrial and mobile hydraulic applications, our pumps are available in a wide range of configurations, including KP30.22-LGF, KP30.27-05S6-LMEMB, and KP30.34-A8K9-LMD.

The KP30 series features advanced pressure-balanced floating-bushing technology, ensuring elite volumetric efficiency even under sustained high-pressure loads. Genlu guarantees 100% Drop-in Interchangeability across mounting flanges, shaft splines (e.g., 05S6, A8K9), and port configurations compared to original Marzocchi assemblies. Each unit undergoes 100% full-pressure load and volumetric-efficiency verification on our digital test benches, certifying rugged performance for your most demanding hydraulic circuits.

Technical Specifications 

• Product Series: KP30 Series High-Pressure Gear Pump

• Representative Models: KP30.22, KP30.27, KP30.34

• Displacement Range: 22 cc/rev – 34 cc/rev

• Nominal Operating Pressure: 230 bar

• Peak Transient Pressure: 260 bar

• Max Rated Speed: 3000 rpm

• Construction: Fixed Displacement Gear Pump

• Shaft Options: Multiple configurations including 05S6 Splined, A8K9 Keyed

Key Technical Advantages:

• Precision Pressure-Balanced Compensation: Utilizes floating side-plate technology to automatically self-adjust axial clearances, drastically reducing internal leakage and maximizing efficiency in high-pressure cycles.

• High-Rigidity Housing Design: Engineered from premium-grade alloys, the housing provides exceptional structural stiffness, dampening vibration and resisting fatigue under peak operating loads.

• Optimized Gear Geometry: CNC-ground, multi-tooth involute gear profiles minimize hydraulic ripple and acoustic noise while maintaining high flow consistency.

• Elite Sealing System: Equipped with premium FKM (Fluoroelastomer) seal kits, offering superior thermal stability and chemical resistance to ensure leak-free operation over extended duty cycles.

Application Areas:

• Construction Machinery: Auxiliary pumps for excavators and power units for compact loaders.

• Industrial Presses: Power sources for automated forming machines, clamping, and material handling systems.

• Agricultural Equipment: Hydraulic drives for tractor implement control and harvesting systems.

Expert Maintenance Tips:

• Pre-Lubrication & Bleeding: Fill the pump housing with clean hydraulic oil through the inlet port before installation. Run the pump at low-pressure/no-load for 10 minutes to bleed all trapped air, preventing cavitation damage.

• Fluid Cleanliness: High-precision gear pumps demand high purity. Maintain an ISO 4406 18/16/13 cleanliness level to prevent abrasive wear on gear faces.

• Suction Integrity: Avoid suction-side restrictions. If high-pitched noise occurs, immediately inspect suction-side filters and pipe connections for airtightness to prevent cavitation, which is the leading cause of gear-surface pitting.