Technical Parameter
| Conventional parameters | |
|---|---|
| Equipment Model | R850L-9VS |
| Model Abbreviation | 850 |
| Weight Range | Super Big Digger(50Above tons) |
| Traveling Method | Crawler |
| Bucket Type | Backhoe |
| Operating Conditions | Mining |
| Power Type | Fuel |
| Engine (Fuel) | |
| Engine Brand | Cummins |
| Model | QSX15 |
| Type | Six-cylinder、4Stroke、Water-cooled、In-line direct injection turbocharged air-to-air intercooled engine |
| Rated Power (kW) | 380 |
| Rated Speed (r/min) | 1800 |
| Maximum Torque (N·m) | 241.1/1400kgf.m/rpm |
| Total Displacement (L) | 15 |
| Number of Cylinders | 6 |
| Bore × Stroke (mm) | 137×169 |
| Performance Parameters | |
| Operating Weight (kg) | 84230 |
| Bucket Capacity (m³) | 4.5 |
| Travel Speed (High/Low) (km/h) | 3.8/2.7 |
| Swing Speed (rpm) | 6.2 |
| Grounding pressure(kPa) | 1.1 |
| Slope Climbing Ability(%) | 70 |
| Bucket Digging Force (kN) | 443.3 |
| Arm Digging Force (kN) | 333.4 |
| Arm Length (mm) | 7200 |
| Boom Length (mm) | 2950 |
| Machine Dimensions | |
| Length × Width × Height (Transportation Status) (mm) | 13100×4495×5040 |
| Cabin Full Height (mm) | 3710 |
| Clearance Over Counterweight (mm) | 1580 |
| Track Ground Length (mm) | 5030 |
| Total Track Length (mm) | 6335 |
| Track Shoe Width (mm) | 700 |
| Track Gauge (mm) | 3500 |
| Minimum Ground Clearance (mm) | 880 |
| Minimum Turning Radius (Front Work Device) (mm) | 5120 |
| Rear End Swing Radius (mm) | 4315 |
| Working Range | |
| Maximum Digging Radius (mm) | 12250 |
| Maximum Digging Radius at Ground Level (mm) | 11970 |
| Maximum Digging Depth (mm) | 7240 |
| Maximum Digging Height (mm) | 11750 |
| Maximum Dumping Height (mm) | 7500 |
| Maximum Vertical Digging Depth (mm) | 5670 |
| Fluid Capacities | |
| Fuel Tank (L) | 940 |
| Hydraulic Tank (L) | 450 |
| Engine Oil Replacement Volume (L) | 43.5 |
| Coolant Capacity (L) | 65 |
| Hydraulic System | |
| Main Pump Type | Two variable piston pumps |
| Maximum Flow Rate of Main Pump (L/min) | 2×504 |
| Travel Hydraulic Motor Type | Two-speed axial piston motor with brake valve and parking brake |
| Swing Hydraulic Motor Type | Axial piston motor with automatic brake |
| Working Hydraulic Circuit (Mpa) | 33 |
| Travel Hydraulic Circuit (Mpa) | 33 |
| Swing Hydraulic Circuit (Mpa) | 29 |
| Arm Cylinder - Bore × Stroke (mm) | 2-Ø200×Ø145×1892 |
| Boom Cylinder - Bore × Stroke (mm) | 1-Ø215×Ø150×2250 |
| Bucket Cylinder - Bore × Stroke (mm) | 1-Ø215×Ø150×1593 |