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Wheel Dozers
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.
Engine Model
C27 Cat®
Gross Power
752.0 hp/561.0 kW
Bore
5.4 in/137.2 mm
Stroke
6.0 in/152.4 mm
Key Features
Long Term Value and Durability
Built to Perform
Performance and Productivity
Work In Comfort
Integrated Cat® Technologies
Technology that Gets Work Done
Safety First
Save on Service and Maintenance
Top-Tier Service and Support
Reduce Environmental Impact
Purpose-Built Cat Attachments
Specifications
Metric
|
Imperial
Engine 
Engine Model
C27 Cat®
Gross Power
752.0 hp
561.0 kW
Bore
5.4 in
137.2 mm
Stroke
6.0 in
152.4 mm
Displacement
1649.5 in³
27.03 l
Torque Rise
18.0 %
18.0 %
Net Power - SAE J1349 - Standard Ambient
699.0 hp
521.0 kW
Net Power - SAE J1349:2011
699.0 hp
521.0 kW
Gross Power - ISO 14396
752.0 hp
561.0 kW
Net Power - SAE J1349 - High Ambient
648.0 hp
483.0 kW
Peak Torque - Speed
2624.0 lb/ft
3557.0 N·m
Emissions
U.S. EPA Tier 4 Final or Tier 2 Equivalent
Rated Speed
1800.0 r/min
1800.0 r/min
Gross Power - SAE J1995:2014
766.0 hp
571.0 kW
Weights
Operating Weight
165089.0 lb
74883.0 kg
Transmission
Converter Drive - Forward 1
4.5 mile/h
7.3 km/h
Converter Drive - Forward 2
8.3 mile/h
13.3 km/h
Converter Drive - Forward 3
14.2 mile/h
22.9 km/h
Converter Drive - Reverse 1
4.9 mile/h
7.9 km/h
Converter Drive - Reverse 2
9.1 mile/h
14.7 km/h
Converter Drive - Reverse 3
15.5 mile/h
24.9 km/h
Direct Drive - Forward 2
8.5 mile/h
13.7 km/h
Direct Drive - Forward 3
15.2 mile/h
24.5 km/h
Direct Drive - Reverse 1
5.4 mile/h
8.7 km/h
Direct Drive - Reverse 2
9.6 mile/h
15.4 km/h
Direct Drive - Reverse 3
16.4 mile/h
26.4 km/h
Transmission Type
Cat Planetary Power Shift
Direct Drive - Forward 1
Lock-up disabled
Service Refill Capacities
Fuel Tank - Standard
286.6 gal (US)
1085.0 l
Cooling System
54.9 gal (US)
208.0 l
Crankcase
20.0 gal (US)
76.0 l
Transmission
29.1 gal (US)
110.0 l
Differential - Final Drives - Front
71.6 gal (US)
271.0 l
Differential - Final Drives - Rear
68.9 gal (US)
261.0 l
Hydraulic System - Implement and Hydraulic Fan
68.9 gal (US)
261.0 l
Hydraulic System - Steering and Braking
34.9 gal (US)
132.0 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 °
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)
115.0 dB(A)
115.0 dB(A)
Operator Sound Level (ISO 6396:2008)
69.0 dB(A)
69.0 dB(A)
Sound Performance - Suppression
Machine Sound Level (ISO 6395:2008)
115.0 dB(A)
115.0 dB(A)
Operator Sound Level (ISO 6396:2008)
69.0 dB(A)
69.0 dB(A)
Hydraulic System - Lift/Tilt
Relief Valve Setting - Tilt Cylinders (Small Pump)
2920.0 psi
20150.0 kPa
Output at 2,000 rpm and 6900 kPa (1,000 psi)
82.0 gpm
311.0 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)
2700.0 psi
18650.0 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
35.0 °
35.0 °
Steering System - Circuit
Pilot, load sensing
Minimum Turning Radius - Over Blade
34.0 ft
10369.0 mm
Relief Valve Setting
4500.0 psi
31000.0 kPa
Steering System - Pump
Piston, variable displacement
Maximum Flow
94.3 gpm
357.0 L/min
Dimensions (Approximate)
Height - Top of Exhaust Pipe
16.6 ft
5049.0 mm
Wheel Base
15.1 ft
4600.0 mm
Length - With Blade on Ground
36.5 ft
11120.0 mm
Centerline of Rear Axle to Edge of Bumper
12.5 ft
3795.0 mm
Centerline of Front Axle to Hitch
7.5 ft
2300.0 mm
Height - Top of ROPS
17.2 ft
5240.0 mm
Ground Clearance
2.0 ft
596.0 mm
Height - Top of Hood
12.7 ft
3862.0 mm
Equipment
Standard Equipment
Optional Equipment
