Komatsu PC78MR Specs: A Comprehensive Overview
Introduction
The Komatsu PC78MR is a powerful and reliable excavator that has gained popularity in the construction industry. With its impressive specifications and performance capabilities, this machine proves to be a valuable asset on any job site. In this article, we will delve into the detailed specifications of the Komatsu PC78MR, providing you with the essential information you need to know.
Engine Specifications
| Engine Model | Komatsu SAA4D95LE-5 |
| Engine Power | 56.9 kW (76.3 HP) |
| Displacement | 3.26 L (199 in³) |
| Number of Cylinders | 4 |
| Max Torque | 380 Nm (280 lb-ft) |
The Komatsu PC78MR is equipped with a robust Komatsu SAA4D95LE-5 engine, delivering a power output of 56.9 kW (76.3 HP). With its 4-cylinder design and a displacement of 3.26 L (199 in³), this engine provides the necessary strength and efficiency to tackle demanding tasks. The maximum torque of 380 Nm (280 lb-ft) ensures excellent digging and lifting capabilities.
Operating Specifications
| Operating Weight | 7,630 kg (16,830 lb) |
| Bucket Capacity | 0.21 – 0.34 m³ (0.28 – 0.44 yd³) |
| Max Digging Depth | 4,170 mm (13 ft 8 in) |
| Max Dumping Height | 5,080 mm (16 ft 8 in) |
| Max Digging Reach | 7,080 mm (23 ft 3 in) |
Weighing in at 7,630 kg (16,830 lb), the Komatsu PC78MR strikes a perfect balance between power and maneuverability. The bucket capacity ranges from 0.21 to 0.34 m³ (0.28 to 0.44 yd³), allowing for efficient material handling. With a maximum digging depth of 4,170 mm (13 ft 8 in), a maximum dumping height of 5,080 mm (16 ft 8 in), and a maximum digging reach of 7,080 mm (23 ft 3 in), this excavator excels in various digging and loading operations.
Travel Specifications
| Travel Speed – High | 4.1 km/h (2.5 mph) |
| Travel Speed – Low | 2.6 km/h (1.6 mph) |
| Gradeability | 70% |
The Komatsu PC78MR offers two travel speed options for enhanced versatility. In high gear, it can reach a maximum speed of 4.1 km/h (2.5 mph), while in low gear, it achieves a speed of 2.6 km/h (1.6 mph). With a remarkable gradeability of 70%, this excavator can effortlessly navigate challenging terrains.
Hydraulic System
| Hydraulic Pump Type | Variable displacement piston pump |
| Max Flow Rate | 2 x 68.7 L/min (2 x 18.1 gal/min) |
| Relief Valve Pressure | 27.4 MPa (280 kg/cm²) |
Equipped with a variable displacement piston pump, the hydraulic system of the Komatsu PC78MR ensures efficient and precise control. The dual pumps deliver a maximum flow rate of 2 x 68.7 L/min (2 x 18.1 gal/min), enabling smooth and responsive operation. The relief valve pressure is set at 27.4 MPa (280 kg/cm²), ensuring the necessary power for heavy-duty tasks.
Conclusion
The Komatsu PC78MR is a reliable and powerful excavator that excels in various construction applications. With its impressive engine specifications, operating capabilities, travel speeds, and hydraulic system, this machine proves to be a valuable asset on any job site. Whether you need to dig, load, or maneuver through challenging terrains, the Komatsu PC78MR is a reliable companion that gets the job done efficiently and effectively.
