Kubota U27-4 Main Hydraulic Pump RH418-61110 OEM Nachi PVD-0B-24P 24cc Mini Excavator Repair

PISTON PUMP AND COMPONENT PARTS - Excavator (K/KH/KX/U Series) Kubota U27-4 | 777parts.com

• Original pump model: Nachi PVD-0B-24P variable displacement tandem piston pump assembly
• Kubota OEM part number: RH418-61110
• Exact fit mini excavator model: Kubota U27-4
• Standard mounting flange, input shaft spline and hydraulic port layout enables direct bolt-on replacement for original pump assembly

• Structure type: Dual variable axial piston main pump integrated with built-in pilot charge gear pump
• Single pump displacement: 24 cm³/rev, matched to factory hydraulic system design of U27-4 compact excavator platform
• Rated continuous working pressure conforms to original system setting, with preset maximum relief pressure for system overload protection
• Operating rotation speed range precisely calibrated to match rated output of original engine equipped on U27-4
• Mounting bolt layout, input shaft dimension and oil port orientation strictly comply with Kubota OEM dimensional drawings
• Pump housing constructed from high-strength ductile iron; internal pistons, valve plates and friction components adopt quenched wear-resistant alloy steel to extend total service lifespan

• Dual main piston pumps deliver high-pressure hydraulic oil to drive boom, arm, bucket, travel and swing working motions
• Integrated pilot gear pump supplies stable pressurized oil for pilot control circuits and system hydraulic oil replenishment
• Built-in load-sensing power regulator automatically adjusts pump flow output according to real-time load fluctuation, preventing engine stall during heavy digging operations
• Compact tandem integrated layout fits neatly inside the limited hydraulic compartment space of U27-4 zero-tail mini excavator

• Exact 1:1 OEM outer casting dimensions, supporting plug-and-play installation without modifiion to hydraulic pipelines or chassis mounting structure
• Every finished pump undergoes comprehensive hydraulic bench inspection covering pressure stability, flow consistency and internal leakage testing before shipment
• Complete maintenance spare parts are held in stock, including overhaul seal kits, piston assemblies, swash plates and valve plates for separate component replacement during repair work
• Single dedied OEM part number designed exclusively for U27-4, simplifying spare part ordering and inventory management for suppliers and repair service workshops

• Input shaft and all hydraulic ports are coated with anti-rust grease and sealed with protective dust plugs
• The entire pump is wrapped with moisture-proof plastic film and secured inside export-grade solid wooden crate to prevent collision and moisture damage during long-distance sea or air transportation
• In-stock items can be dispatched within 3 to 5 working days after order confirmation
• Multiple global shipping solutions are available: international air express, sea LCL/FCL bulk shipment and overland truck transportation for global customers

• Q: Can RH418-61110 install directly on Kubota U27-4? A: Yes, unified mounting sizing and factory-calibrated hydraulic parameters support direct bolt-on fitting for U27-4 with no extra adjustment or modifiion required.
• Q: What is the connection between PVD-0B-24P and RH418-61110? A: PVD-0B-24P is the official Nachi original pump model designation, while RH418-61110 is the exclusive OEM part number assigned by Kubota for this complete pump assembly.
• Q: Are individual repair spare parts available for this hydraulic pump? A: Corresponding full overhaul seal kits, piston shoe assemblies, valve plates, swash plates and standalone pilot gear pump spare parts are all available for partial overhaul and individual component replacement work.