Wheel Dozers
Pret la cerere
Cat Wheel Dozers are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to move more material efficiently and safely at a lower cost per ton. Engineered for your demanding work in large dozing applications, the 844K Wheel Dozer is the largest in the Cat Wheel Dozer line and is an ideal match for large mining operations, power generating utilities, the general contracting industry and wherever mobility, versatility and compaction is needed.
Descriere
+
-
Engine
| Engine Model | C27 Cat® |
| Gross Power | 561 kW |
| Bore | 137.2 mm |
| Stroke | 152.4 mm |
| Displacement | 27.03 l |
| Torque Rise | 18 % |
| Net Power - SAE J1349 - Standard Ambient | 521 kW |
| Net Power - SAE J1349 | 521 kW |
| Gross Power - ISO 14396 | 561 kW |
| Net Power - SAE J1349 - High Ambient | 483 kW |
| Peak Torque - Speed | 3557 N·m |
| Emissions | U.S. EPA Tier 4 Final or Tier 2 Equivalent |
| Rated Speed | 1800 r/min |
| Gross Power - SAE J1995 | 571 kW |
Weights
| Operating Weight | 74883 kg |
Transmission
| Converter Drive - Forward 1 | 7.3 km/h |
| Converter Drive - Forward 2 | 13.3 km/h |
| Converter Drive - Forward 3 | 22.9 km/h |
| Converter Drive - Reverse 1 | 7.9 km/h |
| Converter Drive - Reverse 2 | 14.7 km/h |
| Converter Drive - Reverse 3 | 24.9 km/h |
| Direct Drive - Forward 2 | 13.7 km/h |
| Direct Drive - Forward 3 | 24.5 km/h |
| Direct Drive - Reverse 1 | 8.7 km/h |
| Direct Drive - Reverse 2 | 15.4 km/h |
| Direct Drive - Reverse 3 | 26.4 km/h |
| Transmission Type | Cat Planetary Power Shift |
| Direct Drive - Forward 1 | Lock-up disabled |
Service Refill Capacities
| Fuel Tank - Standard | 1085 l |
| Cooling System | 208 l |
| Crankcase | 76 l |
| Transmission | 110 l |
| Differential - Final Drives - Front | 271 l |
| Differential - Final Drives - Rear | 261 l |
| Hydraulic System - Implement and Hydraulic Fan | 261 l |
| Hydraulic System - Steering and Braking | 132 l |
Cab
| Cab - ROPS/FOPS (1) | Cat cab with separate ROPS/FOPS is standard in North America, Europe and Japan. |
| Air Conditioning | Standard air conditioning system contains environmentally friendly R134a refrigerant |
| ROPS | ROPS meets SAE J11040 APR88, ISO 3471:2008 and ISO 3471:1994 criteria. |
| Cab - ROPS/FOPS (2) | SAE J11040 APR88, ISO 3471:2008, ISO 3471:1994 |
| FOPS | FOPS meets SAE J231 JAN81 and ISO 3449:1992 Level II criteria. |
Brakes
| Brakes | Meets ISO 3540:2011 |
Axles
| Front | Fixed |
| Rear | Trunnion |
| Oscillation Angle | 8.5 ° |
Blade
| Blade Capacity Range | 15,9-30,7 m3 (20,7-40,2 yd.3) |
Sound Performance - Standard
| Machine Sound Level (ISO 6395:2008) | 115 dB(A) |
| Operator Sound Level (ISO 6396:2008) | 69 dB(A) |
Sound Performance - Suppression
| Machine Sound Level (ISO 6395:2008) | 113 dB(A) |
| Operator Sound Level (ISO 6396:2008) | 69 dB(A) |
Hydraulic System - Lift/Tilt
| Relief Valve Setting - Tilt Cylinders (Small Pump) | 20150 kPa |
| Output at 2,000 rpm and 6900 kPa (1,000 psi) | 311 l/min |
| Cylinders, Double Acting - Lift, Bore and Stroke | 133 mm × 1535 mm (5.25 in × 60.4 in) |
| Relief Valve Setting - Bulldozer (Large Pump) | 18650 kPa |
| Cylinder, Double Acting - Tilt and Tip, Bore and Stroke | 210 mm × 188 mm (8.25 in × 7.4 in) |
Hydraulic System - Steering
| Total Steering Angle | 35 ° |
| Steering System - Circuit | Pilot, load sensing |
| Minimum Turning Radius - Over Blade | 10369 mm |
| Relief Valve Setting | 31000 kPa |
| Steering System - Pump | Piston, variable displacement |
| Maximum Flow | 357 l/min |
Dimensions (Approximate)
| Height - Top of Exhaust Pipe | 5049 mm |
| Wheel Base | 4600 mm |
| Length - With Blade on Ground | 11120 mm |
| Centerline of Rear Axle to Edge of Bumper | 3795 mm |
| Centerline of Front Axle to Hitch | 2300 mm |
| Height - Top of ROPS | 5240 mm |
| Ground Clearance | 596 mm |
| Height - Top of Hood | 3862 mm |