YB60000253 Hydraulic Main Pump ZX330
Model: ZX330-5G | Part name: hydraulic Pump |
Brand: SWAFLY | Place of Origin: China |
Condition: Original Genuine & Oem New | Warranty: 12 months |
MOQ: 1 pcs | Production Capacity: 500pcs /Month |
Standard or Nonstandard: Standard | Payment Term: L/C,T/T, Western Union, Tradeassurance |
Delivery Time: 1-3 days (depend on order) | Means of Transport: By Sea, Air or DHL/FEDEX/TNT/EMS |
Guarantee: We will check the parts and send detail pictures to buyer to confirm before shipping. |

Technical Overview of YB60000253 Hydraulic Main Pump for ZX330 Excavator
The YB60000253 hydraulic main pump is a high-performance axial piston pump designed for heavy-duty hydraulic systems, specifically engineered to meet the demanding operational requirements of the ZX330 excavator. This variable displacement pump employs a swashplate design to regulate fluid flow and pressure, enabling precise control of hydraulic power delivery across diverse load conditions.
Key Features and Design:
Variable Displacement Mechanism: Utilizes a swashplate angle adjustment system to modulate displacement, optimizing energy efficiency by matching output flow to system demand. This reduces heat generation and fuel consumption during partial-load operations.
High-Pressure Capability: Engineered for continuous operation at pressures up to 35 MPa (350 bar), with peak transient pressures rated up to 42 MPa, ensuring robust performance in heavy excavation, lifting, and material-handling tasks.
Dual Pump Configuration: Integrates two independent pump units (main and pilot) within a compact housing, enabling simultaneous control of multiple hydraulic circuits (e.g., travel, boom, swing) with minimal pressure drop.
Advanced Materials and Coatings: Critical components, such as pistons, cylinder blocks, and valve plates, are manufactured from hardened alloys and treated with anti-wear coatings (e.g., diamond-like carbon) to enhance durability under abrasive and high-cycle conditions.
Closed-Loop Control Compatibility: Supports integration with electro-hydraulic control systems (e.g., load-sensing or pressure-compensated controls) for real-time flow adjustment, improving responsiveness and operational precision.
Performance Characteristics:
Displacement Range: Adjustable from 0 to 130 cm³/rev, allowing seamless adaptation to varying torque and speed requirements.
Efficiency: Achieves volumetric efficiency >95% and mechanical efficiency >92% under rated conditions, minimizing energy losses.
Thermal Management: Incorporates internal leakage paths and optimized porting to dissipate heat, maintaining fluid temperatures within safe limits even during extended duty cycles.
Application-Specific Enhancements:
Anti-Cavitation Design: Enhanced inlet port geometry and charge pump support ensure stable suction performance, mitigating cavitation risks in high-viscosity or cold-start scenarios.
Shock Load Mitigation: Integrated pressure relief valves and damping circuits protect against pressure spikes during sudden load changes, extending component lifespan.
This pump is designed for integration into the ZX330's hydraulic architecture, ensuring compatibility with OEM-specific control protocols and maintenance requirements. Its modular construction facilitates field servicing, with standardized cartridge valves and seal kits for reduced downtime.

SWAFLY MACHINERY CO.LIMITED specializes in Excavator parts and Mining machinery parts and Agricultural tractor parts in China.
Founded in 2009, Based on more than 15 years of endeavor and experience, we can supply a quality-trusted full range of machinery engines for KUBOTA/ Yanmar/Perkins-Caterpillar/ Cummins-Komatsu /Isuzu/ Mitsubishi/Volvo Penta/ Benz / Deutz brands. And characteristic business of agricultural KUBOTA /Bobcat tractor and harvester machinery engines and all series parts. Otherwise our company main provides 100-800 tons HITACHI/CATERPILLAR/KOMATSU mining machinery parts such as hydraulic systems assembly hydraulic main pump/travel motor final drive/reduction gearbox/MCV main valve, timely develops cost-effective OEM or high-quality aftermarket products, providing a full range of aftermarket services for global customers.


