Komatsu PC55MR-3 708-3S-00942 hydraulic pump for Komatsu construction equipment
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1. Product Overview
The Komatsu PC55MR-3 Hydraulic Piston Pump is a variable displacement axial piston pump engineered to provide optimal flow and pressure for the 5.5-ton machine class. This assembly is a direct replacement for OEM part numbers 708-3S-00942, 708-3S-00941, 708-3S-00951, and 708-3S-00952. It is specifically calibrated to match Komatsu's CLSS (Closed-center Load Sensing System) for maximum efficiency and reduced fuel consumption.
2. Technical Specifications & Performance
Pump Model: HPV Series (Axial Piston Variable Displacement)
Part Numbers: 708-3S-00942, 708-3S-00941, 708-3S-00951, 708-3S-00952
Machine Model: Komatsu PC55MR-3, PC45MR-3
Rated Pressure: 26.5 MPa (265 Bar)
Max Pressure: 29.4 MPa (294 Bar)
Control System: Load Sensing (CLSS) / Pressure Cut-off
Nominal Speed: 2,200 – 2,400 RPM
Warranty: 1-Year Quality Guarantee
Lead Time: 3–7 Working Days
3. Key Engineering Advantages
Precision Load Sensing: Fully compatible with Komatsu's hydraulic logic, ensuring that the pump displacement adjusts instantly to joystick input for smooth, simultaneous movements.
Fuel Efficiency: The variable swashplate design ensures the pump only delivers the flow required for the task, preventing energy waste and reducing oil temperature buildup.
Compact Durability: Despite its small footprint, the internal cylinder block and pistons are made from high-grade materials to withstand the frequent pressure spikes of trenching and grading.
Standardized Installation: All mounting flanges, input shafts, and hydraulic ports are built to exact Komatsu factory specifications for a seamless, "bolt-on" replacement.
4. Supply Range & Brand Expertise
We specialize in professional-grade components for global machinery leaders:
Hydraulics: Main Pumps, Swing Motors, and Control Valves.
Drivetrain: Final Drives, Travel Motors, and Swing Gearboxes.
Electronics: ECU Controllers, Monitors, and Sensors.
Extensive Brand Coverage: Komatsu, Hitachi, Volvo, CAT, Liebherr, Hyundai, Kobelco, Kubota, Yanmar, JCB, Sany, and Doosan.
5. Global Logistics & Fast Delivery
Express Shipping: Fast door-to-door delivery via UPS, DHL, FedEx, and TNT.
Global Logistics: Support for Air Freight, Sea Freight, and DDP (Delivered Duty Paid) shipping to streamline customs and local taxes.
Service Commitment: Worldwide Delivery ensured to minimize your machine's downtime and return your Komatsu fleet to peak productivity.