CAT® Wheel Dozer 844K for Surface Mining
Cat Large 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.
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Overview
Cat Large 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.
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Engine Model
Cat® C27 ACERT™ -
Gross Power
561.0 kW -
Bore
137.2 mm -
Stroke
152.4 mm -
Displacement
27.03 L -
Torque Rise
18.0 % -
Emissions
U.S. EPA Tier 4 Final or Tier 2 Equivalent -
Gross Power - ISO 14396
561.0 kW -
Gross Power - SAE J1995
571.0 kW -
Net Power - SAE J1349
521.0 kW -
Net Power - SAE J1349 (High Ambient)
483.0 kW -
Net Power - SAE J1349 (Standard Ambient)
521.0 kW -
Peak Torque @ (speed)
3557.0 N·m -
Rated Speed
1800.0 RPM -
Ground Clearance
596.0 mm -
Height to Top of Exhaust Pipe
5049.0 mm -
Height to Top of Hood
3862.0 mm -
Height to Top of ROPS
5240.0 mm -
Wheelbase
4600.0 mm
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Operating Weight
74883.0 kg -
FOPS
FOPS meets SAE J231 JAN81 and ISO 3449:1992 Level II criteria. -
ROPS
ROPS meets SAE J11040 APR88, ISO 3471:2008 and ISO 3471:1994 criteria.
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Converter Drive - Forward 1
7.3 km/h -
Converter Drive - Forward 2
13.3 km/h -
Converter Drive - Forward 3
22.9 km/h -
Converter Drive - Reverse 1
7.9 km/h -
Converter Drive - Reverse 2
14.7 km/h -
Converter Drive - Reverse 3
24.9 km/h -
Direct Drive - Forward 2
13.7 km/h -
Direct Drive - Forward 3
24.5 km/h -
Direct Drive - Reverse 1
8.7 km/h -
Direct Drive - Reverse 2
15.4 km/h -
Direct Drive - Reverse 3
26.4 km/h -
Direct Drive - Forward 1
Lock-up disabled -
Transmission Type
Cat Planetary Power Shift
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Fuel Tank - Standard
1085.0 L -
Cooling System
208.0 L -
Crankcase
76.0 L -
Transmission
110.0 L -
Differentials and Final Drives - Front
271.0 L -
Differentials and Final Drives - Rear
261.0 L -
Hydraulic System - Implement and Hydraulic Fan
261.0 L -
Hydraulic System - Steering and Braking
132.0 L
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Air Conditioning
Standard air conditioning system contains environmentally friendly R134a refrigerant
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Cab - ROPS/FOPS
Cat cab with separate ROPS/FOPS is standard in North America, Europe and Japan. -
Cab - ROPS/FOPS
SAE J11040 APR88, ISO 3471:2008, ISO 3471:1994
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Front
Fixed -
Rear
Trunnion -
Oscillation Angle
8.5 Degre
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Brakes
Meets ISO 3540:2011
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Cylinder, 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) -
Output at 2,000 rpm and 6900 kPa (1,000 psi)
311.0 L/min -
Relief Valve Setting - Bulldozer (Large Pump)
18650.0 kPa -
Relief Valve Setting - Tilt Cylinders (Small Pump)
20150.0 kPa
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Machine Sound Level (ISO 6395:2008)
113.0 dB(A) -
Operator Sound Level (ISO 6396:2008)
69.0 dB(A) -
Machine Sound Level (ISO 6395:2008)
115.0 dB(A) -
Operator Sound Level (ISO 6396:2008)
69.0 dB(A)
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Maximum Flow
357.0 L/min -
Minimum Turning Radius (over blade)
10369.0 mm -
Steering System - Circuit
Pilot, load sensing -
Steering System - Pump
Piston, variable displacement -
Total Steering Angle
35.0 Degre
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Relief Valve Setting
31000.0 kPa
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Center Line of Front Axle to Hitch
2300.0 mm -
Center Line of Rear Axle to Edge of Bumper
3795.0 mm
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Length with Blade on Ground
11120.0 mm
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Blade Capacity Range
15.9-30.7 m3 (20.7-40.2 yd3)
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