PSVL-42CG-13 KYB Hydraulic Pump 250Bar

Product Overview

The PSVL-42CG-13 is a high-performance axial variable displacement piston pump assembly engineered specifically for Kubota KX151 and KX161 compact excavators. Built on the proven KYB (Kayaba) PSVL architecture and cross-compatible with PSVL-54CG and PSVL2-36CG models, this unit provides 100% direct drop-in interchangeability with OEM pumps. Every unit undergoes 100% full-load simulated factory testing prior to dispatch, guaranteeing optimum volumetric efficiency, smooth multi-function response, and long service life under tough digging environments.

Technical Specifications

• Primary Model Code: PSVL-42CG-13 (Series Compatibility: PSVL-54CG, PSVL2-36CG)

• Platform Architecture: KYB (Kayaba) PSVL Series

• Equipment Compatibility: Kubota KX151, KX161 excavators

• Displacement: 42.5 cm³/rev

• Rated Continuous Pressure: 250 bar (25 MPa / 3625 psi)

• Peak Operating Pressure: 300 bar (30 MPa / 4350 psi)

• Maximum Drive Speed: 2400 rpm

• Control System: Total Power Control & Negative Flow Control

• Unit Weight: Approx. 32 kg

Key Technical Advantages

• Advanced Bimetallic Metallurgy: Piston shoes and cylinder block interfaces feature nitrided high-strength alloy steel paired with sintered bronze valve plates to eliminate internal bypass leakage and resist thermal galling under high pressure.

• Optimized Power-Matching Control: Integrated high-response power regulators dynamically balance circuit flow against excavator engine torque, preventing engine stalls while accelerating cycle times.

• 100% Direct Drop-in Fit: Manufactured strictly to original Kubota and KYB mounting specs, flange patterns, splines, and porting locations for effortless plug-and-play installation without plumbing changes.

• 100% Factory Simulated Testing: Fully tested under maximum continuous pressure and peak RPM on automated test benches to verify zero external leakage and superior volumetric efficiency.

Application Areas

• Kubota Excavator Lineup: Primary hydraulic main pump replacement for Kubota KX151, KX161, and KX161-3 crawler excavators.

• Compact Equipment: Universal hydraulic power source for mini and midi excavators operating on the KYB PSVL system platform.

Expert Maintenance Tips

Flush the main hydraulic circuit thoroughly and replace return/suction filter elements prior to installation. Maintain fluid cleanliness at ISO 18/16/13 (NAS Class 8) or cleaner using ISO VG 46 anti-wear hydraulic oil. Always pre-fill the pump cavity with fresh hydraulic fluid through the top case drain port before initial start-up, cranking the engine briefly without starting to bleed air and prevent dry wear on internal bearings and valve plates.