KP30 Series Hydraulic Mini Gear Pump Replacement | KP30.38 KP30.41 KP30.51 KP30.61

Genlu Hydraulic proudly introduces the KP30 Series high-performance gear pumps. Engineered as a high-precision, drop-in replacement for Marzocchi KP30 architectures, this series is optimized for rugged mobile machinery and industrial hydraulic power units. We specifically highlight our capability to supply the full range, including KP30.38, KP30.41, KP30.51, KP30.61, and precision-configured units like the KP30.43-04S3-LMD.

The KP30 series is renowned for its elite volumetric efficiency, pressure resilience, and fatigue resistance. Genlu guarantees 100% Drop-in Interchangeability across mounting flanges, shaft specifications (splined/keyed), port configurations, and performance curves compared to original Marzocchi KP30 assemblies. Every pump undergoes 100% full-pressure load and volumetric-efficiency verification on our digital test benches, certifying rugged, consistent hydraulic power even under high-frequency load cycles.

Technical Specifications 

• Product Series: KP30 Series High-Pressure Gear Pump

• Representative Models: KP30.38, KP30.41, KP30.43, KP30.51, KP30.61

• Displacement Range: 38 cc/rev – 61 cc/rev

• Nominal Operating Pressure: 230 – 250 bar (Model-dependent)

• Peak Transient Pressure: Up to 280 bar

• Max Rated Speed: 2500 – 3000 rpm

• Construction: Pressure-Balanced Floating Bushing Gear Pump

• Mounting Style: SAE/ISO Standard Flange

Key Technical Advantages:

• Floating Bushing Pressure Compensation: Utilizes high-performance floating side plates to automatically adjust axial clearance under pressure, significantly reducing internal leakage and maximizing volumetric efficiency.

• Reinforced Housing Rigidity: Engineered from high-strength aluminum/cast-iron combinations, the housing is optimized to dampen pressure pulsations and prevent casing deformation under peak-load conditions.

• Optimized Gear Geometry: Features multi-tooth geometry designed to maximize flow uniformity while minimizing meshing noise, ensuring quieter, smoother operation.

• Elite Sealing Integrity: Equipped with high-grade FKM (Fluoroelastomer) seals, providing superior thermal and chemical resistance for extended, maintenance-free operation in harsh industrial environments.

Application Areas:

• Construction Machinery: Auxiliary power sources for excavators, wheel loaders, and dump trucks.

• Agricultural Equipment: Hydraulic drives for tractor linkage systems and harvesting machinery.

• Industrial HPUs: Power components for hydraulic presses, clamping fixtures, and automated conveyor systems.

Expert Maintenance Tips:

• Pre-Lubrication Procedure: Always fill the pump housing with clean hydraulic oil through the inlet port prior to installation. Run the system at no-load for several minutes to bleed trapped air, which prevents cavitation damage to gear teeth.

• Fluid Cleanliness: The lifespan of these pumps is directly tied to fluid purity. Maintain an ISO 4406 18/16/13 cleanliness level and replace filter elements every 1,000 operational hours.

• Suction-Side Integrity: Avoid any flow restrictions on the suction side. Regularly inspect intake connections for airtight seals. High-pitched operational noise is a primary indicator of cavitation and necessitates immediate inspection of suction-side filters.