Liberia
Djibouti Egypt Ghana Iraq Kenya Liberia Nigeria Sierra Leone Tanzania Uganda United Kingdom China

19266 WhatsApp Messenger WeChat Contact us

Wheel dozers

Cat 844

Stock on demand

Price on request

Engine Model

Cat® C27

Operating Weight

74.883 kg

Net Power - SAE J1349:2011 - Standard Ambient

546 kW

Request Quote Compare Models

Jump to section:

Benefits Specifications Gallery Alternatives Services Contact

US
Metric

Feature and benefits

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.

The full box-section rear frame resists torsional shock and twisting forces. &nb…

The full box-section rear frame resists torsional shock and twisting forces.
Solid through-width push beams transfer and absorb stresses through a larger portion of the frame.
Robust structures withstand the toughest conditions and multiple lifecycles to help improve your bottom line.
Resilient, durable blades are designed with excellent dozing and rolling characteristics.
Optimized axle mounting helps result in increased structural integrity.
Castings in the engine and frame are used in high stress areas to spread high loads.
One-piece castings help enhance strength in key pin areas.

Learn More

Experience reliable efficiency with complete control over injection timing, duration, and pressure with M…

Experience reliable efficiency with complete control over injection timing, duration, and pressure with Mechanically Actuated Electronic Unit Injection (MEUI™).
World-class Cat planetary powershift transmission features consistent, smooth shifting and efficiency through integrated electronic controls.
Extended engine life and improved fuel efficiency with reduced rated speed.
Impeller Clutch Torque Converter (ICTC) and Rimpull Control System (RCS) help provide precise rimpull control.
Load sensing hydraulic steering system enables precise machine control for easier loading.
Lock-up torque converter with advanced control of lock-up speed.
On demand cooling fan helps protect investment and helps lengthen lifecycle.

Learn More

Battery disconnect, emergency engine shutdown, and stairway light switch are accessed through the ground…

Battery disconnect, emergency engine shutdown, and stairway light switch are accessed through the ground level power service center.
Optional Cat Detect with Object Detection System (rearview camera and radar) or Vision (rearview camera) help increase operator awareness around the machine.
Cab-mounted LED strobes provide warning for others near the machine.
Wider stairs with reduced stair angles help increase safety for operators.
Access stairs via a powered platform from cab or ground level and have emergency exit access.

Learn More

Integrated technologies assist with monitoring, managing, and enhancing your jobsite operations…

Integrated technologies assist with monitoring, managing, and enhancing your jobsite operations.
Product Link™ remote monitoring helps provide valuable insight into machine or fleet performance through the VisionLink® interface, so you can make decisions that boost jobsite efficiency and lower operating costs.
Vital Information Management System (VIMS™) touchscreen monitor gives access to a wide range of sensor information and enhanced machine data to resolve problems before machine failure.
Optional Cat Detect technologies help enhance awareness of the environment around the machine for increased safety.

Learn More

Steering and Transmission Integrated Control System (STIC™) combines directional selection, gear selectio…

Steering and Transmission Integrated Control System (STIC™) combines directional selection, gear selection, and steering into a single lever, helping to maximize responsiveness and control while reducing operator fatigue.
Operators can easily enter and exit the cab with fold-up STIC steer/armrest, reduced access stairway angles, and standard stairway lighting.
Experience reduced vibrations with isolated cab mounts and seat-mounted implement and steering controls.
Reduced interior sound levels help keep operators comfortable throughout their entire shift.

Learn More

Meets U.S. EPA Tier 4 Final emissions standards or equivalent to U.S. EPA Tier 2. &nbs…

Meets U.S. EPA Tier 4 Final emissions standards or equivalent to U.S. EPA Tier 2.
Automatic Engine Idle Shutdown helps conserve fuel when machine is not in use.
Generate less waste with maintenance-free batteries.
Maximize machine life and lower operating costs with Caterpillar Reman and Certified Rebuild programs, which utilize reused or remanufactured components for 40 to 70 percent cost savings.
Retrofit packages from Caterpillar deliver new features to older machines to get the most from your investment.

Learn More

Swing-out fuel, hydraulic oil coolers, and condenser allow for easy access cleanout. &…

Swing-out fuel, hydraulic oil coolers, and condenser allow for easy access cleanout.
Machine features ground level or platform access to easily reach daily service points.
Swing-out doors on either side of the engine compartment help provide easy access to critical daily service checks.
Optional tire pressure monitoring system provides real-time information to the operator in the cab for optimized tire life.
Electronics bay is conveniently located inside the cab.
Sight gauges offer quick visual inspection to help minimize fluid contamination.
Lighting inside the engine compartment helps improve visibility to service points.
Ecology drains help prevent spills and allow for easier service.
500-hour engine oil and filter change interval with S•O•S oil sampling analysis.
Service center includes drain and fill, electronic technician connection, and fluid level status.
Axle oil cooler and Automatic Retarder Control helps prevent unnecessary wear from accelerating down declines.

Learn More

Dependable blades are designed for mining with press rib construction and optimized widths and capacities…

Dependable blades are designed for mining with press rib construction and optimized widths and capacities for excellent dozing and rolling.
Heavy-Duty Semi-U blade includes a Hardox 400 Liner plate, side plates, and additional reinforcements at the bottom of the blade.
Equipped with the Cat MineStar System, a suite of integrated mine operations and mobile equipment technologies.
Cat MineStar’s capabilities help manage all aspects of operation.
Fleet provides remote machine tracking capabilities.
Terrain for Loading helps enable high precision management of load management.
Detect assists the operator with areas of limited visibility.
Health delivers machine condition and operating data and diagnostic tools for a long machine lifecycle.

Learn More

Expand to See More

Technical specification

US
Metric

Engine

Specification	Value
Engine Model	Cat® C27
Net Power - SAE J1349:2011 - Standard Ambient	546 kW
Rated Speed	1.800 r/min
Emissions	Option 1 - U.S. EPA Tier 4 Final / EU Stage V
Engine Power - ISO 14396:2002	586 kW
Gross Power - SAE J1995:2014	597 kW
Net Power - SAE J1349:2011 - High Ambient	508 kW
Emissions	Option 2 - China Nonroad Stage III emissions standards, equivalent to U.S. EPA Tier 2
Engine Power - ISO 14396: 2002	561 kW
Gross Power - SAE J1995:2014	571 kW
Net Power - SAE J1349:2011 - Standard Ambient	521 kW
Net Power - SAE J1349:2011 - High Ambient	483 kW
Bore	137.2 mm
Stroke	152.4 mm
Displacement	27.03 l
Peak Torque - Speed	3.557 N·m
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.

Operating Specifications

Specification	Value
Operating Weight	74.883 kg
Blade Capacity Range	15.9 m³

Transmission

Specification	Value
Transmission Type	Cat Planetary Power Shift
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 1	Lock-up disabled
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
Note	Travel speeds based on 45/65-45 L-5 46 ply tires.

Hydraulic System - Lift/Tilt

Specification	Value
Output at 2,000 rpm and 6900 kPa (1,000 psi)	311 L/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)	18.650 kPa
Relief Valve Setting - Tilt Cylinders (Small Pump)	20.150 kPa

Hydraulic System - Steering

Specification	Value
Steering System - Circuit	Pilot, load sensing
Steering System - Pump	Piston, variable displacement
Minimum Turning Radius - Over Blade	10.369 mm
Total Steering Angle	35 °
Maximum Flow	357 L/min
Relief Valve Setting	31.000 kPa

Service Refill Capacities

Specification	Value
Fuel Tank - Standard	1.085 l
Cooling System	208 l
Crankcase	76 l
Transmission	110 l
Differential - Final Drives - Front	271 l
Differential - Final Drives - Rear	261 l
Hydraulic System - Implement and Hydraulic Fan	261 l
Hydraulic System - Steering and Braking	132 l

Air Conditioning System

Specification	Value
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).

Axles

Specification	Value
Front	Fixed
Rear	Trunnion
Oscillation Angle	8.5 °

Brakes

Specification	Value
Brakes	Meets ISO 3540:2011

Sound Performance - Tier 4 Final / Stage V

Specification	Value
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.

Sound Performance - Tier 2

Specification	Value
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.

Cab

Specification	Value
ROPS/FOPS	ISO 3471:2008 and ISO 3449:2005 Level II Standards

Dimensions (Approximate)

Specification	Value
Height - Top of ROPS	5.240 mm
Height - Top of Exhaust Pipe	5.049 mm
Height - Top of Hood	3.862 mm
Ground Clearance	596 mm
Centerline of Front Axle to Hitch	2.300 mm
Centerline of Rear Axle to Edge of Bumper	3.795 mm
Wheel Base	4.600 mm
Length - With Blade on Ground	11.120 mm

Note

Standard and optional equipment may vary. Consult your Cat dealer for details.

Electrical and lighting

Alternator, 150 amp
Batteries, maintenance free (4 - 1,400 CCA)
Battery disconnect and jump start receptacle, bumper
Deutsch terminal connectors
Electrical system, 24V
Electronic transmission control
Lighting system, halogen (front and rear) lighting, access stairway, engine compartment
Starter lockout in bumper
Starting and charging system, 24V
Transmission lockout in bumper

Powertrain

Brakes, oil cooled, multi-disc, service/secondary
Driveline parking brake
Engine Cat C27
Fuel priming pump (electric)
Ground level engine shutdown switch
Precleaner, engine air intake (above hood)
Radiator, Aluminum Modular (AMR)
Starting aid, (ether) automatic
Throttle Lock electronic
Torque Converter, Impeller clutch with lock-up clutch (ICTC) and rimpull control system
Transmission, 534 mm (21 in) planetary power shift (electronic) (3F/3R)

Operator environment

Advisor display, displays real time operating information, performs calibrations and customizes operator setting
Air conditioner and heater with automatic temperature control
Air precleaner, powered
Cab, sound-suppressed pressurized, separate external rolloever protective structure/falling objects protective structure (ROPS/FOPS)
Cigar lighter and ashtray
Coat hook
Converter (12V, 10/15 amp) and power port
Electro-hydraulic blade controls (joystick)
Heater and defroster
Horn, electric
Instrumentation, gauges: - engine coolant temperature, fuel level, hydraulic oil temperature, powertrain oil temperature, tachometer
Instrumentation, warning indicators: - Action alert system, three category - Automatic transmission model enable status - Brake malfunction - Bucket float status - Delayed engine shutdown status - Engine idle shutdown status - Engine malfunction - Fuel economy mode enable status - Hydraulic lockout - Lockup clutch enable status - Low fuel level - Parking brake status - Rimpull control enable status - Seatbelt warning - Secondary steering (if equipped) - Throttle lock status - Transmission gear
Light, dome (cab)
Lunchbox and beverage holders
Seat, premium with heated and actively cooled leather, adjustable lumbar support, air adjustable bolsters on the seat and backrest, seat cushion tilt adjustment, and adjustable-length seat cushion
Radio, AM/FM with Bluetooth®, USB Port, 3.5 mm AUX input
Tinted glass
Wet-arm wipers/washers (front, rear and corner) intermittent front wiper

Safety

Alarm, back-up
Camera, rear vision
Emergency platform exit
Implement lockout switch
Mirrors, rearview (externally mounted)
Seat belt, retractable, 76 mm (3 in) wide
Stairway, left and right rear access
Steering and transmission lock lever, cab
Steering, secondary
Seat, trainer with lap belt, 76 mm (3in) wide
Toe kicks

Service

Axle ecology drains
Case drain filters
Coupling, Caterpillar O-ring face seals
Engine, crankcase, 500 hour interval with CH4
Front walkway around cab
Guards, crankcase and powertrain
Grouped/labeled lube points
Battery disconnect and jump start receptacle, bumper
Hitch, drawbar with pin
Hoses, Cat XT™
Oil sampling valves
Sight guages for steering, implement and transmission oil
Vital Information Management System (VIMS) 3G with graphical information display: external data port, customizable operator profiles

Cooling

Standard ambient package (recommended for site conditions that do not exceed 43°C (110°F)

Cold weather

Heated seat

Efficiency

Economy mode with on demand throttle
Positive flow control hydraulic system
Impeller Clutch Torque Converter (ICTC) with lock-up clutch
Steering, load sensing
Soft detent controls
Engine idle management features: - Auto idle kickdown - Delayed engine shutdown - Engine idle shutdown

Tramming

Front fenders

Note

Standard and optional equipment may vary. Consult your Cat dealer for details.

Electrical and lighting

Lights, LED
Product Link (Cellular)
Product Link (Satellite)

Powertrain

Engine brake
No-spin rear axle
No-spin rear axle and oil cooler
Precleaner, raised

Operator environment

Radio, Sirius XM/AM/FM radio with Bluetooth technology, USB port, 3.5 mm AUX input
Rubber mounted cab glass
Window sun screen

Safety

LED warning strobe

Service

Product Link™

Blades

HD Semi-U - 16.1 m3 (21.1 yd3)
Paint, black blade rear

Cooling

High ambient cooling - software (recommended for site conditions that do not exceed 49°C [121°F]

Cold weather

50° C (-58° F) antifreeze
120V or 240V coolant heating elements (recommended in conditions from -18°C to -30°C [0°F to -22°F]
-40°C (-40°F) Hydraulic Oil, Arctic

Tramming

Fender extensions, roading, front and rear

Download technical specifications

Learn more information about the Cat 844 Wheel Dozer.

Download (2.22 MB, PDF)

Media gallery

Filter by category:
All
Photos
360 View

Frequently compared machines

Service Solutions

From pre-purchase consults to end-of-lifecycle benefits, Mantrac informs, advises and partners with you.

/media/3zzdz1bk/mantrac_services_warranty_hero_v1.jpg?width=370

GET IN TOUCH WITH
OUR SALES TEAM

Speak with the Sales Team to learn the latest prices and information on products that can deliver value and help transform your business.

Enquire now

Speak with our local experts

Find the perfect machine or equipment solution by contacting one of our local specialists. They are on standby, ready to help you solve your operational challenges.

Mantrac Liberia

Mantrac Liberia Address

Hotline: 777651137

Connect on WhatsApp

Send an email

Wheel dozers

Cat 844

Feature and benefits

Technical specification

Engine

Operating Specifications

Transmission

Hydraulic System - Lift/Tilt

Hydraulic System - Steering

Service Refill Capacities

Air Conditioning System

Axles

Brakes

Sound Performance - Tier 4 Final / Stage V

Sound Performance - Tier 2

Cab

Dimensions (Approximate)

Note

Electrical and lighting

Powertrain

Operator environment

Safety

Service

Cooling

Cold weather

Efficiency

Tramming

Note

Electrical and lighting

Powertrain

Operator environment

Safety

Service

Blades

Cooling

Cold weather

Tramming

Download technical specifications

Media gallery

Frequently compared machines

Service Solutions

Warranty & Guarantee

Technology

Financing

GET IN TOUCH WITH OUR SALES TEAM

Speak with our local experts

GET IN TOUCH WITH
OUR SALES TEAM