Detalle Productos Cat
14567864
Wheel Dozers
- Machines
- Wheeled tractors
- 844 Wheel Dozer
17411112
844 Wheel Dozer
Caterpillar
https://www.finanzauto.es/productos/tractores-de-ruedas-caterpillar-tractor-de-ruedas-844
Metric
Imperial
Engine Model
Cat® C27
Operating Weight
74883 kg
165089 lb
Net Power - SAE J1349:2011 - Standard Ambient
546 kW
732 hp
Availability
Maximize productivity in mining applications with the Cat® 844 Wheel Dozer, designed with efficiency in mind. Enhanced maintenance capabilities and simplified serviceability make for a long lifecycle, low owning and operating costs, and more uptime. Move more material with a machine built for the toughest conditions.
IMPROVED EFFICIENCY
Lock-up torque converter, combined with an on-demand cooling fan and advanced engine idle management, delivers a more smooth shiftENHANCED MAINTENANCE
Service access is conveniently located, helping to reduce maintenance timeADDITIONAL SAFETY
Grouped, ground level engine and machine controls allow for safe and easy daily maintenance
- The full box-section rear frame resists torsional shock and twisting forces.
- Solid through-width push beams transfer and absorb stresses through a larger portion of the frame.
- Robust structures withstand the toughest conditions and multiple lifecycles to help improve your bottom line.
- Resilient, durable blades are designed with excellent dozing and rolling characteristics.
- Optimized axle mounting helps result in increased structural integrity.
- Castings in the engine and frame are used in high stress areas to spread high loads.
- One-piece castings help enhance strength in key pin areas.
- Experience reliable efficiency with complete control over injection timing, duration, and pressure with Mechanically Actuated Electronic Unit Injection (MEUI™).
- World-class Cat planetary powershift transmission features consistent, smooth shifting and efficiency through integrated electronic controls.
- Extended engine life and improved fuel efficiency with reduced rated speed.
- Impeller Clutch Torque Converter (ICTC) and Rimpull Control System (RCS) help provide precise rimpull control.
- Load sensing hydraulic steering system enables precise machine control for easier loading.
- Lock-up torque converter with advanced control of lock-up speed.
- On demand cooling fan helps protect investment and helps lengthen lifecycle.
- Battery disconnect, emergency engine shutdown, and stairway light switch are accessed through the ground level power service center.
- Optional Cat Detect with Object Detection System (rearview camera and radar) or Vision (rearview camera) help increase operator awareness around the machine.
- Cab-mounted LED strobes provide warning for others near the machine.
- Wider stairs with reduced stair angles help increase safety for operators.
- Access stairs via a powered platform from cab or ground level and have emergency exit access.
- Integrated technologies assist with monitoring, managing, and enhancing your jobsite operations.
- Product Link™ remote monitoring helps provide valuable insight into machine or fleet performance through the VisionLink® interface, so you can make decisions that boost jobsite efficiency and lower operating costs.
- Vital Information Management System (VIMS™) touchscreen monitor gives access to a wide range of sensor information and enhanced machine data to resolve problems before machine failure.
- Optional Cat Detect technologies help enhance awareness of the environment around the machine for increased safety.
- Steering and Transmission Integrated Control System (STIC™) combines directional selection, gear selection, and steering into a single lever, helping to maximize responsiveness and control while reducing operator fatigue.
- Operators can easily enter and exit the cab with fold-up STIC steer/armrest, reduced access stairway angles, and standard stairway lighting.
- Experience reduced vibrations with isolated cab mounts and seat-mounted implement and steering controls.
- Reduced interior sound levels help keep operators comfortable throughout their entire shift.
- Meets U.S. EPA Tier 4 Final emissions standards or equivalent to U.S. EPA Tier 2.
- Automatic Engine Idle Shutdown helps conserve fuel when machine is not in use.
- Generate less waste with maintenance-free batteries.
- Maximize machine life and lower operating costs with Caterpillar Reman and Certified Rebuild programs, which utilize reused or remanufactured components for 40 to 70 percent cost savings.
- Retrofit packages from Caterpillar deliver new features to older machines to get the most from your investment.
- Swing-out fuel, hydraulic oil coolers, and condenser allow for easy access cleanout.
- Machine features ground level or platform access to easily reach daily service points.
- Swing-out doors on either side of the engine compartment help provide easy access to critical daily service checks.
- Optional tire pressure monitoring system provides real-time information to the operator in the cab for optimized tire life.
- Electronics bay is conveniently located inside the cab.
- Sight gauges offer quick visual inspection to help minimize fluid contamination.
- Lighting inside the engine compartment helps improve visibility to service points.
- Ecology drains help prevent spills and allow for easier service.
- 500-hour engine oil and filter change interval with S•O•S oil sampling analysis.
- Service center includes drain and fill, electronic technician connection, and fluid level status.
- Axle oil cooler and Automatic Retarder Control helps prevent unnecessary wear from accelerating down declines.
- Dependable blades are designed for mining with press rib construction and optimized widths and capacities for excellent dozing and rolling.
- Heavy-Duty Semi-U blade includes a Hardox 400 Liner plate, side plates, and additional reinforcements at the bottom of the blade.
- Equipped with the Cat MineStar System, a suite of integrated mine operations and mobile equipment technologies.
- Cat MineStar’s capabilities help manage all aspects of operation.
- Fleet provides remote machine tracking capabilities.
- Terrain for Loading helps enable high precision management of load management.
- Detect assists the operator with areas of limited visibility.
- Health delivers machine condition and operating data and diagnostic tools for a long machine lifecycle.
Engine
| Engine Model | Cat® C27 | |
| Net Power - SAE J1349:2011 - Standard Ambient | 546 kW | 732 hp |
| Rated Speed | 1800 r/min | 1800 r/min |
| Emissions | Option 1 - U.S. EPA Tier 4 Final / EU Stage V | |
| Engine Power - ISO 14396:2002 | 586 kW | 786 hp |
| Gross Power - SAE J1995:2014 | 597 kW | 801 hp |
| Net Power - SAE J1349:2011 - High Ambient | 508 kW | 681 hp |
| Emissions | Option 2 - China Nonroad Stage III emissions standards, equivalent to U.S. EPA Tier 2 | |
| Engine Power - ISO 14396: 2002 | 561 kW | 752 hp |
| Gross Power - SAE J1995:2014 | 571 kW | 766 hp |
| Net Power - SAE J1349:2011 - Standard Ambient | 521 kW | 699 hp |
| Net Power - SAE J1349:2011 - High Ambient | 483 kW | 648 hp |
| Bore | 137.2 mm | 5.4 in |
| Stroke | 152.4 mm | 6 in |
| Displacement | 27.03 l | 1649.5 in³ |
| Peak Torque - Speed | 3557 N·m | 2624 lb/ft |
| Torque Rise | 18 % | 18 % |
| Note | Net power advertised is the power available at the flywheel when the engine is equipped with fan at minimum speed, air intake system, exhaust system, and alternator. |
Operating Specifications
| Operating Weight | 74883 kg | 165089 lb |
| Blade Capacity Range | 15.9 m³ | 20.8 yd³ |
Transmission
| Transmission Type | Cat Planetary Power Shift | |
| Converter Drive - Forward 1 | 7.3 km/h | 4.5 mile/h |
| Converter Drive - Forward 2 | 13.3 km/h | 8.3 mile/h |
| Converter Drive - Forward 3 | 22.9 km/h | 14.2 mile/h |
| Converter Drive - Reverse 1 | 7.9 km/h | 4.9 mile/h |
| Converter Drive - Reverse 2 | 14.7 km/h | 9.1 mile/h |
| Converter Drive - Reverse 3 | 24.9 km/h | 15.5 mile/h |
| Direct Drive - Forward 1 | Lock-up disabled | |
| Direct Drive - Forward 2 | 13.7 km/h | 8.5 mile/h |
| Direct Drive - Forward 3 | 24.5 km/h | 15.2 mile/h |
| Direct Drive - Reverse 1 | 8.7 km/h | 5.4 mile/h |
| Direct Drive - Reverse 2 | 15.4 km/h | 9.6 mile/h |
| Direct Drive - Reverse 3 | 26.4 km/h | 16.4 mile/h |
| Note | Travel speeds based on 45/65-45 L-5 46 ply tires. |
Hydraulic System - Lift/Tilt
| Output at 2,000 rpm and 6900 kPa (1,000 psi) | 311 l/min | 82 gal/min |
| Cylinders, Double Acting - Lift, Bore and Stroke | 133 mm × 1535 mm (5.25 in × 60.4 in) | |
| Cylinder, Double Acting - Tilt and Tip, Bore and Stroke | 210 mm × 188 mm (8.25 in × 7.4 in) | |
| Relief Valve Setting - Bulldozer (Large Pump) | 18650 kPa | 2700 psi |
| Relief Valve Setting - Tilt Cylinders (Small Pump) | 20150 kPa | 2920 psi |
Hydraulic System - Steering
| Steering System - Circuit | Pilot, load sensing | |
| Steering System - Pump | Piston, variable displacement | |
| Minimum Turning Radius - Over Blade | 10369 mm | 34 ft |
| Total Steering Angle | 35 ° | 35 ° |
| Maximum Flow | 357 l/min | 94.3 gal/min |
| Relief Valve Setting | 31000 kPa | 4500 psi |
Service Refill Capacities
| Fuel Tank - Standard | 1085 l | 286.6 gal (US) |
| Cooling System | 208 l | 54.9 gal (US) |
| Crankcase | 76 l | 20 gal (US) |
| Transmission | 110 l | 29.1 gal (US) |
| Differential - Final Drives - Front | 271 l | 71.6 gal (US) |
| Differential - Final Drives - Rear | 261 l | 68.9 gal (US) |
| Hydraulic System - Implement and Hydraulic Fan | 261 l | 68.9 gal (US) |
| Hydraulic System - Steering and Braking | 132 l | 34.9 gal (US) |
Air Conditioning System
| Air Conditioning | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. - If equipped with R134a (Global Warming Potential = 1430), the system contains 1.8 kg (3.9 lb) of refrigerant, which has a CO2 equivalent of 2.574 metric tonnes (2.837 tons). |
Axles
| Front | Fixed | |
| Rear | Trunnion | |
| Oscillation Angle | 8.5 ° | 8.5 ° |
Brakes
| Brakes | Meets ISO 3540:2011 |
Sound Performance - Tier 4 Final / Stage V
| Operator Sound Pressure Level (ISO 6396:2008) | 72 dB(A) | 72 dB(A) |
| Machine Sound Power Level (ISO 6395:2008) | 116 dB(A) | 116 dB(A) |
| Operator Sound Pressure Level (ISO 6396:2008)* | 72 dB(A) | 72 dB(A) |
| Machine Sound Power Level (ISO 6395:2008)* | 114 dB(A) | 114 dB(A) |
| Note (1) | *Sound suppression equipped | |
| Note (2) | The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed. | |
| Note (3) | The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed. | |
| Note (4) | Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment. |
Sound Performance - Tier 2
| Operator Sound Pressure Level (ISO 6396:2008) | 72 dB(A) | 72 dB(A) |
| Machine Sound Power Level (ISO 6395:2008) | 116 dB(A) | 116 dB(A) |
| Operator Sound Pressure Level (ISO 6396:2008)* | 72 dB(A) | 72 dB(A) |
| Machine Sound Power Level (ISO 6395:2008)* | 114 dB(A) | 114 dB(A) |
| Note (1) | *Sound suppression equipped | |
| Note (2) | The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed. | |
| Note (3) | The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed. | |
| Note (4) | Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment. |
Cab
| ROPS/FOPS | ISO 3471:2008 and ISO 3449:2005 Level II Standards |
Dimensions (Approximate)
| Height - Top of ROPS | 5240 mm | 17.2 ft |
| Height - Top of Exhaust Pipe | 5049 mm | 16.6 ft |
| Height - Top of Hood | 3862 mm | 12.7 ft |
| Ground Clearance | 596 mm | 2 ft |
| Centerline of Front Axle to Hitch | 2300 mm | 7.5 ft |
| Centerline of Rear Axle to Edge of Bumper | 3795 mm | 12.5 ft |
| Wheel Base | 4600 mm | 15.1 ft |
| Length - With Blade on Ground | 11120 mm | 36.5 ft |
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