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Excavator Hydraulic Pump Assembly K3V280SH For Hitachi EX650 EX700 EX750

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Excavator Hydraulic Pump Assembly K3V280SH For Hitachi EX650 EX700 EX750

Name: Excavator Hydraulic Pump Assembly K3V280SH For Hitachi EX650 EX700 EX750
Brand: Hitachi
Price: 800 USD

Delivery Time : 3-7 work days

Packaging Details : Wooden Box

Model Number : K3V280SH

Price : $800 - $1100

Place of Origin : China

Part name : Hydraulic Main Pump

Compatible Engine : K3V280SH

Condition : 100%new

Brand Name : Hitachi

Rated speed : 1800–2000 rpm (excavator application)

Supply Ability : 99

Type : Hydraulic Pump

Compatible Model : EX650 EX700 EX750 EX800 EX870 EX1100 EX1200-3

MOQ : 1

Payment Terms : L/C,D/A,D/P,T/T

Warranty Time : Six Month

Pressure : High Pressure

Packing : wooden box

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Excavator Hydraulic Pump Assembly K3V280SH for Hitachi EX650 EX700 EX750

Restore the full hydraulic power of your large Hitachi excavator with this high-performance K3V280SH main pump assembly. Designed for heavy-duty models including EX650, EX700, EX750, EX800, EX870, EX1100, and EX1200-3, this pump delivers the high pressure and flow required for demanding earthmoving, mining, and quarry applications. Built to OEM specifications, it ensures reliable, consistent performance and extended service life in the harshest operating conditions.

Core Selling Points

✅ Precision OEM Fit for Hitachi Large Excavators

This K3V280SH pump is manufactured to the exact specifications of the original Hitachi unit, ensuring seamless installation with no modifications required. It is fully compatible with the hydraulic systems of all listed excavator models, restoring full power and functionality.

✅ Heavy-Duty Construction for Extreme Conditions

Built with high-grade cast iron housings and precision-machined internal components, this pump is designed to withstand the high pressures and continuous operation of mining and large-scale construction work. The robust design minimizes wear, leaks, and downtime.

✅ Optimized Hydraulic Performance

The twin variable displacement pump design delivers precise flow control, ensuring smooth, responsive operation of all excavator functions including boom, arm, bucket, swing, and travel. This improves work efficiency and reduces operator fatigue during long shifts.

✅ Cost-Effective Fleet Maintenance Solution

Replacing a worn main pump with this high-quality aftermarket unit eliminates the risk of performance loss and hydraulic system damage. It offers a reliable, budget-friendly alternative to expensive OEM parts, helping you keep your Hitachi excavators running at peak efficiency.

Item	Specification
Model	K3V280SH (Tandem Variable Displacement Axial Piston Pump)
Configuration	Dual swash plate axial piston pump (double pump assembly)
Displacement per pump	280 cm³/rev (cc/rev)
Total displacement	560 cm³/rev (for double pump)
Rated pressure	34.3 MPa (343 bar)
Maximum pressure	39.2 MPa (392 bar)
Rated speed	1800–2000 rpm (excavator application)
Maximum self-priming speed	2,360 rpm
Flow rate (at 1800 rpm)	~1008 L/min (total, theoretical)
Control type	Load sensing + negative flow control (excavator system)
Drive shaft spline	SAE standard or excavator-specific spline
Mounting flange	Excavator engine flywheel housing compatible
Approximate weight	~300–350 kg
Compatible excavators	Hitachi EX650 EX700 EX750 EX800 EX870 EX1100 EX1200-3 , Sumitomo SH800, etc.

Part Number	Type	Description & Compatibility
K3V280SH	Base Model Number	Official Kawasaki pump model designation for the EX-series main pump
K3V280SH100R-0E02	Kawasaki OEM	Full factory part number for the standard EX-series configuration
K3V280SH100R-0E02-VD	Kawasaki OEM	Version with electronic proportional control valve (EX1200-3 specific)
4644567	Hitachi OEM	Factory-original pump assembly for EX700/EX800
4644568	Hitachi OEM	Updated service replacement version for EX750/EX870
4644569	Hitachi OEM	EX1100/EX1200-3 specific pump assembly
9170546	Hitachi OEM	EX650 early production version pump assembly
K3V280SH	Aftermarket Format	Common listing format for aftermarket pumps (no suffix)
4644567R	Remanufactured	Hitachi remanufactured pump assembly part number

Excavator Hydraulic Pump Assembly K3V280SH For Hitachi EX650 EX700 EX750

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