844 Wheel Dozer

Mobile. Agile. Versatile.

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.

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.

Highlights
Features & Specs
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Equipment Highlights

Long Term Value and Durability
Move More with Less Fuel
Safety First
Technology that Gets Work Done
Work In Comfort
Reduce Environmental Impact
Save on Service and Maintenance
Purpose-Built Cat Attachments

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Features + Specs

Equipment Features
Optional Equipment
Specs
  • ROPS/FOPS: ISO 3471:2008 and ISO 3449:2005 Level II Standards
  • Front: Fixed
  • Rear: Trunnion
  • Oscillation Angle: 8.5 °
  • Brakes: Meets ISO 3540:2011
  • Engine Model: Cat® C27
  • Net Power - SAE J1349:2011 - Standard Ambient: 732 hp
  • Rated Speed: 1800 r/min
  • Emissions: Option 1 - U.S. EPA Tier 4 Final / EU Stage V
  • Engine Power - ISO 14396:2002: 786 hp
  • Gross Power - SAE J1995:2014: 801 hp
  • Net Power - SAE J1349:2011 - High Ambient: 681 hp
  • Emissions: Option 2 - China Nonroad Stage III emissions standards, equivalent to U.S. EPA Tier 2
  • Engine Power - ISO 14396: 2002: 752 hp
  • Gross Power - SAE J1995:2014: 766 hp
  • Net Power - SAE J1349:2011 - Standard Ambient: 699 hp
  • Net Power - SAE J1349:2011 - High Ambient: 648 hp
  • Bore: 5.4 in
  • Stroke: 6 in
  • Displacement: 1649.5 in³
  • Peak Torque - Speed: 2624 lb/ft
  • Torque Rise: 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.
  • Transmission Type: Cat Planetary Power Shift
  • Converter Drive - Forward 1: 4.5 mile/h
  • Converter Drive - Forward 2: 8.3 mile/h
  • Converter Drive - Forward 3: 14.2 mile/h
  • Converter Drive - Reverse 1: 4.9 mile/h
  • Converter Drive - Reverse 2: 9.1 mile/h
  • Converter Drive - Reverse 3: 15.5 mile/h
  • Direct Drive - Forward 1: Lock-up disabled
  • Direct Drive - Forward 2: 8.5 mile/h
  • Direct Drive - Forward 3: 15.2 mile/h
  • Direct Drive - Reverse 1: 5.4 mile/h
  • Direct Drive - Reverse 2: 9.6 mile/h
  • Direct Drive - Reverse 3: 16.4 mile/h
  • Note: Travel speeds based on 45/65-45 L-5 46 ply tires.
  • 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).
  • Height - Top of ROPS: 17.2 ft
  • Height - Top of Exhaust Pipe: 16.6 ft
  • Height - Top of Hood: 12.7 ft
  • Ground Clearance: 2 ft
  • Centerline of Front Axle to Hitch: 7.5 ft
  • Centerline of Rear Axle to Edge of Bumper: 12.5 ft
  • Wheel Base: 15.1 ft
  • Length - With Blade on Ground: 36.5 ft
  • Operating Weight: 165089 lb
  • Blade Capacity Range: 20.8 yd³
  • Fuel Tank - Standard: 286.6 gal (US)
  • Cooling System: 54.9 gal (US)
  • Crankcase: 20 gal (US)
  • Transmission: 29.1 gal (US)
  • Differential - Final Drives - Front: 71.6 gal (US)
  • Differential - Final Drives - Rear: 68.9 gal (US)
  • Hydraulic System - Implement and Hydraulic Fan: 68.9 gal (US)
  • Hydraulic System - Steering and Braking: 34.9 gal (US)
  • Operator Sound Pressure Level (ISO 6396:2008): 72 dB(A)
  • Machine Sound Power Level (ISO 6395:2008): 116 dB(A)
  • Operator Sound Pressure Level (ISO 6396:2008)*: 72 dB(A)
  • Machine Sound Power Level (ISO 6395:2008)*: 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.
  • Steering System - Circuit: Pilot, load sensing
  • Steering System - Pump: Piston, variable displacement
  • Minimum Turning Radius - Over Blade: 34 ft
  • Total Steering Angle: 35 °
  • Maximum Flow: 94.3 gpm
  • Relief Valve Setting: 4500 psi
  • Output at 2,000 rpm and 6900 kPa (1,000 psi): 82 gpm
  • 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): 2700 psi
  • Relief Valve Setting - Tilt Cylinders (Small Pump): 2920 psi
  • Operator Sound Pressure Level (ISO 6396:2008): 72 dB(A)
  • Machine Sound Power Level (ISO 6395:2008): 116 dB(A)
  • Operator Sound Pressure Level (ISO 6396:2008)*: 72 dB(A)
  • Machine Sound Power Level (ISO 6395:2008)*: 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.
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