Excavator Hydraulic Pump Assembly K3V280SH For Hitachi EX650 EX700 EX750
Price:
$800 - $1100
MOQ:
1
Delivery Time:
3-7 work days
Brand:
Hitachi
Product Description
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 |
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Company
Guangzhou Lanxin Machinery Equipment Co., Ltd
Location
No. 407, Building 4, Tianji International Machinery, 12 Dongheng Sanlu Road, Zhujun District, Guangzhou City
Contact Person
Isaac