Wheel Dozers 844K

Request A Price Find Dealer

Key Specs

Engine Model
C27 Cat®
C27 Cat®
Gross Power
752 HP
561 kW
Operating Weight
165089 lb
74883 kg

Overview

Mobile. Agile. Versatile.

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.

Benefits

IMPROVED EFFICIENCY

Lock-up torque converter, combined with an on-demand cooling fan and advanced engine idle management, delivers a more smooth shift

ENHANCED MAINTENANCE

Service access is conveniently located, helping to reduce maintenance time

ADDITIONAL SAFETY

Grouped, ground level engine and machine controls allow for safe and easy daily maintenance

Product Specifications for 844K

Engine Model C27 Cat® C27 Cat®
Gross Power 752 HP 561 kW
Bore 5.4 in 137.2 mm
Stroke 6 in 152.4 mm
Displacement 1649.5 in³ 27.03 l
Torque Rise 18 % 18 %
Net Power - SAE J1349 - Standard Ambient 699 HP 521 kW
Net Power - SAE J1349 699 HP 521 kW
Gross Power - ISO 14396 752 HP 561 kW
Net Power - SAE J1349 - High Ambient 648 HP 483 kW
Peak Torque - Speed 2624 lb/ft 3557 N·m
Emissions U.S. EPA Tier 4 Final or Tier 2 Equivalent U.S. EPA Tier 4 Final or Tier 2 Equivalent
Rated Speed 1800 r/min 1800 r/min
Gross Power - SAE J1995 766 HP 571 kW
Operating Weight 165089 lb 74883 kg
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 Cat Planetary Power Shift
Direct Drive - Forward 1 Lock-up disabled Lock-up disabled
Fuel Tank - Standard 286.6 gal (US) 1085 l
Cooling System 54.9 gal (US) 208 l
Crankcase 20 gal (US) 76 l
Transmission 29.1 gal (US) 110 l
Differential - Final Drives - Front 71.6 gal (US) 271 l
Differential - Final Drives - Rear 68.9 gal (US) 261 l
Hydraulic System - Implement and Hydraulic Fan 68.9 gal (US) 261 l
Hydraulic System - Steering and Braking 34.9 gal (US) 132 l
Cab - ROPS/FOPS (1) Cat cab with separate ROPS/FOPS is standard in North America, Europe and Japan. 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 Standard air conditioning system contains environmentally friendly R134a refrigerant
ROPS ROPS meets SAE J11040 APR88, ISO 3471:2008 and ISO 3471:1994 criteria. 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 SAE J11040 APR88, ISO 3471:2008, ISO 3471:1994
FOPS FOPS meets SAE J231 JAN81 and ISO 3449:1992 Level II criteria. FOPS meets SAE J231 JAN81 and ISO 3449:1992 Level II criteria.
Brakes Meets ISO 3540:2011 Meets ISO 3540:2011
Front Fixed Fixed
Rear Trunnion Trunnion
Oscillation Angle 8.5 ° 8.5 °
Blade Capacity Range 15,9-30,7 m3 (20,7-40,2 yd.3) 15,9-30,7 m3 (20,7-40,2 yd.3)
Machine Sound Level (ISO 6395:2008) 115 dB(A) 115 dB(A)
Operator Sound Level (ISO 6396:2008) 69 dB(A) 69 dB(A)
Machine Sound Level (ISO 6395:2008) 113 dB(A) 113 dB(A)
Operator Sound Level (ISO 6396:2008) 69 dB(A) 69 dB(A)
Relief Valve Setting - Tilt Cylinders (Small Pump) 2920 psi 20150 kPa
Output at 2,000 rpm and 6900 kPa (1,000 psi) 82 gal/min 311 l/min
Cylinders, Double Acting - Lift, Bore and Stroke 133 mm × 1535 mm (5.25 in × 60.4 in) 133 mm × 1535 mm (5.25 in × 60.4 in)
Relief Valve Setting - Bulldozer (Large Pump) 2700 psi 18650 kPa
Cylinder, Double Acting - Tilt and Tip, Bore and Stroke 210 mm × 188 mm (8.25 in × 7.4 in) 210 mm × 188 mm (8.25 in × 7.4 in)
Total Steering Angle 35 ° 35 °
Steering System - Circuit Pilot, load sensing Pilot, load sensing
Minimum Turning Radius - Over Blade 34 ft 10369 mm
Relief Valve Setting 4500 psi 31000 kPa
Steering System - Pump Piston, variable displacement Piston, variable displacement
Maximum Flow 94.3 gal/min 357 l/min
Height - Top of Exhaust Pipe 16.6 ft 5049 mm
Wheel Base 15.1 ft 4600 mm
Length - With Blade on Ground 36.5 ft 11120 mm
Centerline of Rear Axle to Edge of Bumper 12.5 ft 3795 mm
Centerline of Front Axle to Hitch 7.5 ft 2300 mm
Height - Top of ROPS 17.2 ft 5240 mm
Ground Clearance 2 ft 596 mm
Height - Top of Hood 12.7 ft 3862 mm

844K Standard Equipment

NOTE

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

OPERATOR ENVIRONMENT

  • Air conditioner and heater with automatic temperature control
  • Cab, sound-suppressed pressurized, protective structure (ROPS/FOPS), radio ready for (entertainment) includes antenna, speakers and converter (12V, 10-15 amp)
  • 12V power port for mobile phone or laptop connection
  • Camera, rear vision
  • Cigar lighter and ashtray
  • Coat hook
  • Electro-hydraulic blade controls (seat mounted)
  • Flip-up armrest
  • Heater and defroster
  • Horn, electric
  • Implement hydraulic lockout
  • Instrumentation, gauges: - Engine coolant temperature - Fuel level - Ground speed - Gear - Hydraulic oil temperature - Speedometer/tachometer - Torque converter temperature
  • 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
  • Keypad, control with indicator lights: - Auto trans mode speed range - Auto/manual transmission mode - Lockup clutch - Reduced rimpull - Throttle lock
  • Light, dome (cab)
  • Lunchbox and beverage holders
  • Mirrors, rearview (externally mounted)
  • Seat, Cat comfort (cloth) air suspension
  • Seat belt, retractable, 76 mm (3 in) wide
  • STIC control system with steering lock
  • Tinted glass
  • Trainer seat with lap belt
  • Vital Information Management System (VIMS) 3G with graphical information display: external data port, customizable operator profiles
  • Wet-arm wipers/washers (front, rear and corner) intermittent front wiper

POWER TRAIN

  • Brakes, full hydraulic, enclosed, oil-disc
  • Axle-shaft oil-disc service brake
  • Electro hydraulic parking brake
  • Case drain filters
  • Cat clean emission module (Tier 4 only)
  • Demand fan
  • Engine Cat C27
  • Fuel priming pump (electric)
  • Ground level engine shutoff, bumper
  • Mufflers (under hood) (Tier 2 only)
  • Precleaner, engine air intake
  • Radiator, Aluminum Modular (AMR)
  • Separated cooling system
  • Starting aid, (ether) manual override
  • Throttle Lock
  • Torque Converter, Impeller Clutch with lock-up clutch feature and rimpull control system
  • Transmission, 534 mm (21 in) planetary power shift (electronic) (3F/3R)

ELECTRICAL

  • Alarm, back-up
  • Alternator, 150 amp
  • Batteries, maintenance free (2 - 1,400 CCA)
  • Converter, 10/15 amp, 24V to 12V
  • Deutsch component connectors
  • Electrical system, 24V
  • Electronic transmission control
  • Lighting system, halogen (front and rear) lighting, access stairway, engine compartment
  • Starter, electric
  • Starter lockout in bumper
  • Starting receptacle for emergency start
  • Transmission lockout in bumper

OTHER

  • Axle temperature sensor
  • Battery disconnect and jump start receptacle, bumper
  • Coupling, Caterpillar O-ring face seals
  • Economy mode with on demand throttle
  • Emergency platform egress
  • Engine, crankcase, 500 hour interval with CH4
  • Engine idle management features: - Auto idle kickdown - Delayed engine shutdown - Engine idle shutdown
  • Fenders, steel (front)
  • Guards, crankcase and power train
  • Grouped/labeled lube points
  • Hitch, drawbar with pin
  • Hoses, Cat XT
  • Oil sampling valves
  • Positive flow control hydraulic system
  • Product Link™
  • Sight Gauges: hydraulic tanks, steering/fan and implement/brake, and transmission
  • Stairway, left and right rear access
  • Steering, load sensing
  • Steering, secondary
  • Toe kicks
  • Vandalism protection caplocks
  • Venturi stack
  • Premixed 50% concentration of extended life coolant with freeze protection to -34° C (-29° F)

844K Optional Equipment

NOTE

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

POWER TRAIN

  • 50° C (-58° F) antifreeze
  • Engine oil change system, high speed, Wiggins
  • Engine block heater 120V or 240V
  • High ambient cooling - software

BLADES

  • Semi-U - 17.8 m3 (23.3 yd3)
  • HD Semi-U - 16.1 m3 (21.1 yd3)
  • Coal - 30.7 m3 (40.2 yd3)

OPERATOR ENVIRONMENT

  • Cab precleaner
  • AM/FM/CD/MP3 radio
  • Satellite Sirius radio with Bluetooth
  • LED warning strobe
  • CB radio ready
  • Window sun shade

MISCELLANEOUS ATTACHMENTS

  • Front and rear roading fenders
  • Fast fill fuel system (Shaw-Aero)
  • Axle oscillation stop
  • Paint, black blade rear

See how 844K compares against frequently compared products.

Use the comparison tool to compare detailed specs of Cat and competitor models.

COMPARE ALL MODELS

Tools And Expert Help At Every Turn

Product Brochures and More Are Ready to Download!

Full specifications, product brochures and more. Sign up below for additional information. Or for instant access, you can skip this form.

Marketing Consent

Compatible Technology and Services

Leverage Caterpillar connected data and security principles to improve efficiencies, increase productivity and make your business more profitable.

  • Cat App

    Efficient equipment management starts with the Cat App. Track the location and health of your equipment, order service and parts, and activate telematics devices directly from your mobile device. Staying on top of your fleet 24/7 has never been easier.

  • Cat Inspect

    Cat® Inspect allows you to access your equipment data on your mobile device. This easy-to-use app lets you capture inspection data and integrates with your other Cat data systems, so you can keep a close eye on your fleet. More than one million inspections are completed each year, providing convenience and accountability to equipment owners.

  • Cat Product Link

    Cat® Product Link™ wirelessly connects you to your equipment giving you valuable insight into how your machine or fleet is performing. Information such as location, hours, fuel usage, productivity, idle time, and diagnostic codes are made available through online web applications so that you can make timely, fact-based decisions to maximize efficiency, improve productivity, and lower the cost of owning and operating your fleet. Available with satellite or cellular connectivity.

  • Cat Remote Flash

    Remote Flash sends an alert from your Cat dealer, prompting you to update the software on your machine. To minimize downtime, updates can be deployed while on the jobsite without having to wait for a dealer technician to arrive. Remote flash decreases maintenance time and keeps your asset running with maximum efficiency.

  • Cat VisionLink

    View fleet information online with VisionLink and use it to make informed decisions that boost productivity, lower costs, simplify maintenance, and improve safety on your jobsite. With different subscription level options, your Cat dealer can help configure exactly what you need to optimize your fleet and drive additional profit.

  • ISO 15143-3 (AEMP 2.0) API

    Import telematics data into your own applications for improved fleet management. Our API meets AEMP 2.0 and ISO 15143-3 standards, ideal for mixed fleets.

  • My.Cat.Com

    My.Cat.Com is the web-based hub for digital equipment management, giving you an easy way to take in complex information. Monitor cost, utilization, reliability, age information and other critical data needed to run a business more efficiently and effectively. Access your equipment information and connect with your Cat dealer – all in one place.

1 - 8 of 9 Items items
Previous Next

Efficient equipment management starts with the Cat App. Track the location and health of your equipment, order service and parts, and activate telematics devices directly from your mobile device. Staying on top of your fleet 24/7 has never been easier.

Explore Technology

Cat® Inspect allows you to access your equipment data on your mobile device. This easy-to-use app lets you capture inspection data and integrates with your other Cat data systems, so you can keep a close eye on your fleet. More than one million inspections are completed each year, providing convenience and accountability to equipment owners.

Explore Technology

Cat® Product Link™ wirelessly connects you to your equipment giving you valuable insight into how your machine or fleet is performing. Information such as location, hours, fuel usage, productivity, idle time, and diagnostic codes are made available through online web applications so that you can make timely, fact-based decisions to maximize efficiency, improve productivity, and lower the cost of owning and operating your fleet. Available with satellite or cellular connectivity.

Explore Technology

Remote Flash sends an alert from your Cat dealer, prompting you to update the software on your machine. To minimize downtime, updates can be deployed while on the jobsite without having to wait for a dealer technician to arrive. Remote flash decreases maintenance time and keeps your asset running with maximum efficiency.

Explore Technology

View fleet information online with VisionLink and use it to make informed decisions that boost productivity, lower costs, simplify maintenance, and improve safety on your jobsite. With different subscription level options, your Cat dealer can help configure exactly what you need to optimize your fleet and drive additional profit.

Explore Technology

Import telematics data into your own applications for improved fleet management. Our API meets AEMP 2.0 and ISO 15143-3 standards, ideal for mixed fleets.

Explore Technology

My.Cat.Com is the web-based hub for digital equipment management, giving you an easy way to take in complex information. Monitor cost, utilization, reliability, age information and other critical data needed to run a business more efficiently and effectively. Access your equipment information and connect with your Cat dealer – all in one place.

Explore Technology

Check out current offers for the 844K

View More Offers
warning

Internet Explorer users may experience issues with certain features of our site.
Please try a current version of an alternate browser (i.e. Google Chrome, Microsoft Edge, Mozilla Firefox) for the full Cat.com experience.