844
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 844 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.
Engine Model
C27 Cat®
Rated Speed
1800.0 r/min
Gross Power - ISO 14396
752.0 HP
Specification
Value
Engine Model
C27 Cat®
Rated Speed
1800.0 r/min
Gross Power - ISO 14396
752.0 HP
Gross Power - SAE J1995
766.0 HP
Net Power - SAE J1349 - Standard Ambient
699.0 HP
Net Power - SAE J1349 - High Ambient
648.0 HP
Bore
5.4 in
Stroke
6.0 in
Displacement
1649.5 in³
Peak Torque - Speed
2624.0 lb/ft
Torque Rise
18.0 %
Emissions
U.S. EPA Tier 4 Final and EU Stage V or China Nonroad Stage III Emissions standards, equivalent to U.S. EPA Tier 2
Specification
Value
Operating Weight
165089.0 lb
Blade Capacities
15.9 - 30.7 m3 (20.7 - 40.2 yd3)
Specification
Value
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
Specification
Value
Output at 2,000 rpm and 6900 kPa (1,000 psi)
82.0 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)
2700.0 psi
Relief Valve Setting - Tilt Cylinders (Small Pump)
2920.0 psi
Specification
Value
Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Minimum Turning Radius - Over Blade
34.0 ft
Total Steering Angle
35.0 °
Maximum Flow
94.3 gal/min
Relief Valve Setting
4500.0 psi
Specification
Value
Fuel Tank - Standard
286.6 gal (US)
Cooling System
54.9 gal (US)
Crankcase
20.0 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)
Specification
Value
Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.8 kg of refrigerant which has a CO2 equivalent of 2.574 metric tonnes.
Specification
Value
Front
Fixed
Rear
Trunnion
Oscillation Angle
8.5 °
Specification
Value
Brakes
Meets ISO 3540:2011
Specification
Value
Operator Sound Level (ISO 6396:2008)
69.0 dB(A)
Machine Sound Level (ISO 6395:2008)
115.0 dB(A)
Specification
Value
Operator Sound Level (ISO 6396:2008)
69.0 dB(A)
Machine Sound Level (ISO 6395:2008)
113.0 dB(A)
Specification
Value
ROPS/FOPS
ISO 3471:2008 and ISO 3449:2005 Level II Standards
Specification
Value
Height - Top of ROPS
17.2 ft
Height - Top of Exhaust Pipe
16.6 ft
Height - Top of Hood
12.7 ft
Ground Clearance
2.0 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
