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Ziegler CAT

844K Wheel Dozer

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.

Brand: Caterpillar

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Exterior

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Specifications

  • Engine
    SpecValue
    Engine Model Cat® C27 ACERT™
    Gross Power 752 HP
    Bore 5.4 in
    Stroke 6 in
    Displacement 1649.5 in³
    Torque Rise 18 %
    Net Power - SAE J1349 - Standard Ambient 699 HP
    Net Power - SAE J1349 699 HP
    Gross Power - ISO 14396 752 HP
    Net Power - SAE J1349 - High Ambient 648 HP
    Peak Torque - Speed 2624 lb/ft
    Emissions U.S. EPA Tier 4 Final or Tier 2 Equivalent
    Rated Speed 1800 r/min
    Gross Power - SAE J1995 766 HP
  • Weights
    SpecValue
    Operating Weight 165089 lb
  • Transmission
    SpecValue
    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 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
    Transmission Type Cat Planetary Power Shift
    Direct Drive - Forward 1 Lock-up disabled
  • Service Refill Capacities
    SpecValue
    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)
  • Cab
    SpecValue
    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
    SpecValue
    Brakes Meets ISO 3540:2011
  • Axles
    SpecValue
    Front Fixed
    Rear Trunnion
    Oscillation Angle 8.5 °
  • Blade
    SpecValue
    Blade Capacity Range 15.9-30.7 m3 (20.7-40.2 yd3)
  • Sound Performance - Standard
    SpecValue
    Machine Sound Level (ISO 6395:2008) 115 dB(A)
    Operator Sound Level (ISO 6396:2008) 69 dB(A)
  • Sound Performance - Suppression
    SpecValue
    Machine Sound Level (ISO 6395:2008) 113 dB(A)
    Operator Sound Level (ISO 6396:2008) 69 dB(A)
  • Hydraulic System - Lift/Tilt
    SpecValue
    Relief Valve Setting - Tilt Cylinders (Small Pump) 2920 psi
    Output at 2,000 rpm and 6900 kPa (1,000 psi) 82 gal/min
    Cylinders, Double Acting - Lift, Bore and Stroke 133 mm × 1535 mm (5.25 in × 60.4 in)
    Relief Valve Setting - Bulldozer (Large Pump) 2700 psi
    Cylinder, Double Acting - Tilt and Tip, Bore and Stroke 210 mm × 188 mm (8.25 in × 7.4 in)
  • Hydraulic System - Steering
    SpecValue
    Total Steering Angle 35 °
    Steering System - Circuit Pilot, load sensing
    Minimum Turning Radius - Over Blade 34 ft
    Relief Valve Setting 4500 psi
    Steering System - Pump Piston, variable displacement
    Maximum Flow 94.3 gal/min
  • Dimensions (Approximate)
    SpecValue
    Height - Top of Exhaust Pipe 16.6 ft
    Wheel Base 15.1 ft
    Length - With Blade on Ground 36.5 ft
    Centerline of Rear Axle to Edge of Bumper 12.5 ft
    Centerline of Front Axle to Hitch 7.5 ft
    Height - Top of ROPS 17.2 ft
    Ground Clearance 2 ft
    Height - Top of Hood 12.7 ft