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Medium Dozers

From large to small, mining to finishing work, you are certain to find a Cat® Dozer to match your needs. We offer several configurations and special custom packages to meet your specific needs.

D7R Track-Type Tractor

Caterpillar has been the world leader in Track-Type Tractors for more than a century. The D7R combines legendary Cat product durability and reliability with proven technology designed to reduce emissions while improving your productivity and your bottom line. From rugged structures to fully integrated engine and power train systems, the D7R is a world-class tractor built to help you produce the highest quality work in a variety of applications.

Product Details


Engine Model Cat® C9 ACERT™
Flywheel Power 179.0 kW
Net Power – ISO 9249 179.0 kW
Bore 112.0 mm
Stroke 149.0 mm
Displacement 8.8 L
Maximum Power at 1,900 rpm – Gross Power – ISO 14396 204.0 kW
Maximum Power at 1,900 rpm – Net Power – ISO 9249 194.0 kW
Rated Power at 2,100 rpm – Gross Power – ISO 14396 192.0 kW
Rated Power at 2,100 rpm – Net Power – ISO 9249 179.0 kW


Operating Weight 24962.0 kg
Operating Weight – STD 24962.0 kg
Operating Weight – Standard 24962.0 kg
Shipping Weight – Standard 20288.0 kg
Operating Weight – XR 25441.0 kg
Shipping Weight – XR 20767.0 kg
Operating Weight – LGP 27101.0 kg
Shipping Weight – LGP 22380.0 kg


A-Blade Capacity – STD/XR 3.89 m3
A-Blade Width – STD/XR 4496.0 mm
S-Blade Capacity – LGP 5.89 m3
S-Blade Width – LGP 4545.0 mm
SU-Blade Capacity – STD/XR 6.86 m3
SU-Blade Width – STD/XR 3693.0 mm


1.0 Forward 3.52 km/h
2.0 Forward 6.1 km/h
3.0 Forward 10.54 km/h
1.0 Reverse 4.54 km/h
2.0 Reverse 7.85 km/h
3.0 Reverse 13.58 km/h


Shoes/Side – LGP 43
Grouser Height 71.0 mm
Track on Ground – LGP 3175.0 mm
Ground Contact Area (STD Track) – LGP 5.81 m2
Ground Contact Area (STD Track) – STD 3.21 m2
Ground Contact Area (STD Track) – XR 3.41 m2
Ground Pressure (STD Track) – LGP 45.78 kPa
Ground Pressure (STD Track) – STD 76.32 kPa
Ground Pressure (STD Track) – XR 73.22 kPa
Shoes/Side – STD 40
Shoes/Side – XR 41
Standard Width of Shoe – LGP 914.0 mm
Standard Width of Shoe – STD/XR 560.0 mm
Track on Ground – STD 2870.0 mm
Track on Ground – XR 3048.0 mm

Service Refill Capacities

Fuel Tank 479.0 L
Cooling System 73.0 L
Engine Crankcase 28.0 L
Power Train 178.0 L
Final Drives (each) 13.0 L
Hydraulic Tank 54.0 L
Pivot Shaft 32.0 L

Hydraulic Controls – Maximum Operating Pressure

Bulldozer, Lift 22750.0 kPa
Bulldozer, Tilt 17225.0 kPa
Ripper, Lift 22750.0 kPa
Ripper, Tilt 22750.0 kPa
Steering 38000.0 kPa


ROPS/FOPS Standards
Cab Meets the appropriate standards as listed below
Brakes Brakes meet the standard SAE J/ISO 10265 MAR99

Hydraulic Controls – Pump

Pump Capacity 38500.0 kPa
Pump Type Variable Displacement Piston
RPM at Rated Engine Speed 2231.0 RPM
Pump Output 289.0 L/min
Lift Cylinder Flow 190.0 L/min
Tilt Cylinder Flow 80.0 L/min
Ripper Cylinder Flow 190.0 L/min


Maximum Penetration Force 85.0 kN
Pitch Adjustment, Ripper Down – Backward 10.0 Degrees
Pitch Adjustment, Ripper Down – Forward 15.0 Degrees
Pryout Force 176.6 kN
Weight – with Three Shanks 3337.0 kg
Type Adjustable Parallelogram
Number of Pockets 3
Overall Beam Width 2210.0 mm
Maximum Clearance Raised (under tip, pinned in bottom hole) 757.0 mm
Maximum Penetration 748.0 mm

Hydraulic Controls – Main Relief Valve

Pressure Setting 42000.0 kPa

Cab and Controls

Productivity, safety, comfort

Operator Environment

The D7R features an isolation-mounted, pressurized cab that reduces noise and vibration. Large, single pane windows offer good views all around the machine for maximum productivity and enhanced job site safety. The Comfort Series seat is offset by 15 degrees for better visibility. It features fully adjustable positioning and armrests to provide a comfortable platform when working on steep grades or slopes. Gauges and warning lights on the in-dash instrument cluster are easy to read, even in direct sunlight. The Cat Monitoring System Display gives operators and service technicians easy access to operating and maintenance information. The system provides three levels of warning and system monitoring so the operator can stay informed and still concentrate on the job. Heating and air conditioning vents evenly distribute airflow within the cab. The cab is pre-wired for a 12-volt or 24-volt radio, equipped with two speakers, an antenna and a radio mount recessed in the headliner.

Dozer and Ripper Controls

All D7R controls are ergonomically designed for low-effort and ease of operation. The dozer and ripper control levers feature pilot-operated hydraulics for added operator comfort and precise control. When the AccuGrade™ system is activated, the dozer is electro-hydraulically controlled. When the operator returns to manual control, the dozer is operated through the pilot hydraulic system.

Throttle Rocker Switch

With the touch of a finger, the rocker switch activates high or low idle. A decelerator pedal gives the operator full control of engine speed when the rocker switch is in the high idle position. Engine speed can also be easily set in any range between high and low idle by simultaneously using the decelerator pedal to set the desired speed and pressing the throttle switch in for three seconds.

Steering and Transmission Control

The operator uses a single handle control to perform all direction and gear selection. The tiller bar control allows the operator to work more precisely in close areas around structures, grade stakes and other machines. Differential Steering provides the finest modulation in the industry.

Work Tool Lock-Out Switch

The work tool lock-out valve prevents inadvertent operation of the hydraulic work tool attachments for added safety.


Power and reliability

Caterpillar is one of the world’s leading engine manufacturers. Every component of a Cat® engine is carefully designed to maximize durability and reliability. Precise controls optimize power and fuel efficiency while reducing emissions. Modular design and advanced electronic diagnostics enhance the engine’s serviceability.

ACERT Technology

The D7R features a Cat C9 engine with ACERT™ Technology. A series of Caterpillar innovations provide advanced electronic control, precision fuel delivery and refined air management, resulting in outstanding performance and lower emissions. To help customers work within expanding global regulatory requirements, the C9 engine with ACERT Technology has been certified to China Stage II (GB 20891-2007) emission compliance, equivalent to EPA Tier 2/EU Stage II levels.


The air-to-air aftercooler (ATAAC) - part of the advanced air management system - brings cool air to the engine. This increases life, reduces emissions, and helps maximize fuel efficiency.

Fuel Delivery

Multiple injection fuel delivery very precisely controls the combustion cycle. This lowers combustion chamber temperatures to reduce emissions and translates into more work output per unit of fuel. The Hydraulic Electronic Unit Injector (HEUI™) fuel system controls injection pressure over the entire engine operating speed range for complete control over injection timing, duration, and pressure.

Fractured Split Connecting Rods

Design creates near-perfect joint alignment, maximizing rod bearing life. This, in combination with a high efficiency oil filter, ensures long engine life.

Cat Advanced High Efficiency Oil Filter

Advanced oil filters provide outstanding contamination control for a much cleaner running engine. The advanced filtration is accomplished without the shorter change intervals often required with other brands.

Cooling System

The all new cooling system includes engine radiator, Air-to-Air After Cooler (ATAAC), and hydraulic oil cooler. Engine radiator consists of two units of bar plate cooler, which are connected at the top with hose. The aluminum bar plate construction provides improved durability to debris plugging, abrasion and corrosion resistance.

Power Train

Powerful efficiency

The power shift transmission, unique Cat torque divider and differential steering are matched with the C9 engine to deliver outstanding power and reliability. The integrated system efficiently puts more power to the ground, utilizing more of the available horsepower, so you get more done with less.

Differential Steering System

Differential steering puts you on the leading edge of productivity by maintaining power to both tracks while turning. When one track speeds up, the other slows down an equal amount. Maneuverability - especially with large blade loads - is improved, as well as cycle times in other applications. Greater load capacity, power and speed control are possible in soft underfoot conditions on steep slopes because both tracks are powered during turns. A single tiller bar controls all directional and speed functions for ease of operation.

Torque Divider

A unique Cat torque divider sends 70 percent of engine torque through a converter and 30 percent through a direct drive shaft for greater driveline efficiency and higher torque multiplication. The D7R torque divider provides high reliability and low dynamic torque. Components are designed to absorb full engine power, and deliver an optimum combination of operator efficiency and driveline reliability.

Planetary Power Shift Transmission

The transmission includes three speeds forward and three speeds reverse, featuring thick, large diameter, high capacity, oil-cooled clutches. These clutches provide higher torque capacity and increase service life. The planetary power shift transmission has a proven, robust mechanical control system. Modular transmission and differential slide into rear case for servicing ease, even when a ripper is installed. An oil-to-water cooler provides maximum cooling capacity, and forced oil flow lubricates and cools clutch packs for maximum clutch life.


Rugged design for maximum service

The foundation of every Cat dozer is a rugged frame built to absorb high impact shock loads and twisting forces. Castings provide added strength to the main case and equalizer bar saddle. The pivot shaft runs through the mainframe and connects the roller frame for independent oscillation. The full-length pivot shaft distributes impact loads throughout the case, reducing bending stresses on the case. This design eliminates alignment problems and the need for diagonal braces on the roller frames. The pinned equalizer bar gives the roller frames the ability to oscillate up and down to better match ground contours for maximum traction and operator comfort. Equalizer bar end pins are oil filled with limited slip seals for longer life and reduced repair costs. The D7R also features the tag-link design to mount the blade closer to the machine for excellent maneuverability, machine balance and blade penetration. The tag-link provides solid lateral stability and eliminates the need for diagonal bracing since it transfers side loads to the mainframe instead of dozer push-arms.


Proven productivity

Since its ground-breaking introduction in 1978, the Cat elevated sprocket undercarriage arrangements allow optimized balance for best possible performance in each application. This is a field-proven design that offers outstanding machine performance and longer component life. Ground and implement shock loads are transferred to the mainframe to protect final drives, axles and steering components from harsh impacts for longer component life. The elevated sprocket design gives the operator excellent sight lines to the blade, sides and back of the machine. However, machine center of gravity remains low, offering excellent stability, balance and traction. Modular power train components make it quick to remove and repair the transmission, final drives, steering differential or brakes. Modular undercarriage components simplify service. Lifetime lubricated idlers and track/carrier rollers provide the ability to re-use internal components and rebuild or reshell components. This reduces owning and operating costs, and saves raw materials and natural resources.

Heavy Duty Undercarriage

Standard Heavy Duty undercarriage components are designed for extended wear life in abrasive conditions and high impact applications like forestry, side-slopes, or working in rocky or uneven terrain. Heavy duty track is designed for enhanced penetration. The leading and trailing edges of each track shoe overlap the adjacent shoe to increase durability and component life. Three (3) Undercarriage Arrangements are available:
  • Standard arrangement - A general purpose undercarriage that performs well in many applications with firm underfoot conditions
  • XR arrangement - More track to the rear positions the tractors weight forward, which increases traction and stability in drawbar, skidding and ripping applications
  • LGP arrangement - Specifically designed to work in soft or wet conditions. Wide track shoes, long track frames, and a wider machine gauge increases ground contact area and reduces ground pressure for improved stability requiring flotation in swampy conditions.

Track Shoes

Moderate Service and Extreme Service track shoes are available to help optimize the machine based on its most frequent applications. Proper track shoe selection helps minimize wear for optimal undercarriage life - especially in high impact or highly abrasive conditions.

Work Tools

Equipped for the job

Load Sensing Hydraulics

Field-proven, load-sensing, pilot controlled hydraulics respond to operating requirements by automatically and continually adjusting hydraulic power to maximize work tool efficiency.

Cat Blades

Blade designs feature a strong box-section design, made from steel with high tensile strength to stand up to the most severe applications. Heavy moldboard construction and hardened bolt-on cutting edges and end bits add strength and durability.
  • Semi-Universal Blade - designed for superior load retention and penetration in tightly packed materials. The Semi-Universal blades are available with optional Wear Plates for working in abrasive rock conditions.
  • Straight Blade - available for the LGP machine. The Straight blade features ability to handle heavier material with aggressive cutting capability.
  • Angle Blade - can be positioned straight or angled 25 degrees to either side manually. Designed for side casting, pioneering roads, backfilling and cutting ditches.

Multi-Shank Ripper

The three-shank adjustable paralleogram ripper is an excellent tool for preparing hard-packed material before dozing operations. The D7R multi-shank ripper also allows the ripper tip angle to be adjustable.

Rear Counterweight

Optimize balance for backing up steep slopes or increasing performance in heavy dozing applications and if another rear attachment is not specified.


See your Cat dealer for available Winch options best suited to your applications.

Integrated Electronic Solutions

Technology to reduce costs and improve productivity

AccuGrade System for Track-Type Tractors

The AccuGrade system automates blade control for improved grading accuracy and more cost effective operation. Sensors calculate precise blade slope and elevation, then automatically adjust the blade to maintain grade. Automated blade control improves efficiency by reaching grade faster and in fewer passes, reducing the need for traditional survey stakes or grade checkers.

AccuGrade™ Ready Option

AccuGrade systems and controls can be integrated from the factory, making system installation and setup quick and easy. Integration also provides greater system protection and reliability.

AccuGrade Systems

Three (3) systems are available to match the AccuGrade Ready Option integrated ex-factory selection. All calculate necessary blade adjustments to achieve grade, make automatic blade adjustments and calculate cut/fill requirements.
  • LASER enables automatic blade control to execute 2D profiles and requires direct line of sight to a LASER transmitter. Field-proven and versatile, the dual laser system is ideal for fine grading of sites with flat, single or dual slope surfaces, such as industrial, commercial and residential building sites.
  • Universal Total Station (UTS) is a high accuracy dynamic system to track a machine and monitor blade positioning. The UTS instrument continuously measures the target’s position and transmits real-time positioning data to the operator via the in-cab display showing the exact position of the blade in relation to desired design.
  • Global Satellite Navigation control systems are the best solution when a site involves contours, rather than single or dual slope planes. This technology uses Satellite Navigation to compare a blades position to a 3D computerized site plan and signals the operator, or automatically through the hydraulic system, to maneuver the blade to achieve the design.

Product Link

The optional Product Link* system is a factory installed or easily retrofitted wireless system that simplifies equipment fleet tracking. Using satellite or cellular technology, it automatically reports key machine parameters such as location, machine hours, active and logged service codes and security alarms. * Product Link licensing not available in all areas.


Stay up and running

Cat machines are designed with serviceability in mind. Modular components, easy access to regular service points and features that enable quicker diagnostics all add up to less maintenance time and more time on the job.

Cat Monitoring System

The D7R features a monitoring system that provides feedback to operators with easy-to-read gauges and warning lamps that allows the operator to concentrate on the job at hand. With the use of a Cat Electronic Technician (ET), your Cat dealer can determine historical performance parameters of the machine. The Cat Monitoring System is designed to:
  • Reduce downtime
  • Provide warning feedback on operational events
  • Provide feedback on machine performance events

Scheduled Oil Sampling (S·O·SSM) Analysis

Monitor machine health and identify key maintenance needs before they lead to downtime through Cat Scheduled Oil Sampling. Cat machines feature live sampling ports for the engine oil, power train hydraulics and coolant. Cat oil sampling offers accurate analysis using tests designed by Caterpillar for Cat products, as well as knowledgeable interpretation of the results.

Built to be Rebuilt

Major components on the D7R are built to be rebuilt, extending the useful life of the machine. Machine and component rebuilds save money, and offer a sustainability element by saving raw materials and natural resources. See your Cat dealer to learn more about rebuild options.

Total Customer Support

Renowned dealer support

Only Cat machines come with the industry’s best sales and service support - the Cat dealer network. From helping you choose the right machine to ongoing support, your Cat dealer provides the best in sales and service. Manage your costs with preventive maintenance programs like Custom Track Service, Scheduled Oil Sampling (S·O·SSM) analysis, and guaranteed maintenance contracts. Stay productive with best-in-class parts availability. Your Cat dealer can even help with operator training to help you boost your profits. And when it’s time for replacement, your Cat dealer can help you save even more with Genuine Cat Remanufactured parts. Remanufactured power train and hydraulic components cost less, but come with the same warranty and reliability as new products. Talk with your Cat dealer to learn more about reducing waste and saving money through Cat Remanufacturing.
    •  Alarm, backup
    •  Alternator, 95-Amp, brushless
    •  Batteries, 2 maintenance free 12V (24V system)
    •  Converter, 12V, 10-Amp with 2 outlets
    •  Connector, diagnostic
    •  Lights, 4 (2 mounted on the lift cylinder facing forward, 2 mounted on the fuel tank facing rearward)
    •  Electric start, 24V
    •  Horn, forward warning
  • Alarm, backup
    • Alternator, 95-Amp, brushless
      • Batteries, 2 maintenance free 12V (24V system)
        • Converter, 12V, 10-Amp with 2 outlets
          • Connector, diagnostic
            • Lights, 4 (2 mounted on the lift cylinder facing forward, 2 mounted on the fuel tank facing rearward)
              • Electric start, 24V
                • Horn, forward warning
                  • OPERATOR ENVIRONMENT
                    •  Air conditioner, under-hood
                    •  Armrest, adjustable
                    •  Cab, ROPS/FOPS
                    •  Decelerator pedal
                    •  Differential steering control
                    •  Cat Monitoring System: - Coolant temperature - Hydraulic temperature - Power train temperature - Fuel level - Tachometer - Hour meter - Diagnostics
                    •  Food pads, dash
                    •  Heater
                    •  Hydraulic controls, pilot operated with electronic deactivation switch
                    •  Mirror, rearview
                    •  Radio ready
                    •  Seat, adjustable contour suspension
                    •  Seatbelt, retractable, 76 mm (3 in)
                    •  Throttle switch, electronic
                    •  Hydraulic implement lockout, electronic
                    •  Wipers, two (2) speed
                  • POWER TRAIN
                    •  Cat C9 (8.8 L/537 in3) diesel engine
                    •  Electronic engine control for hi and lo idle and selectable maximum engine speed
                    •  Aluminum bar plate radiator
                    •  Air cleaner, precleaner with strata tube dust ejector
                    •  Air filter with electronic service indicator
                    •  Aluminum bar plate after-cooler, air to air (ATAAC)
                    •  Coolant, extended life
                    •  Fan, blower, direct drive
                    •  Final drives, 3-planet double reduction planetary
                    •  Fuel priming pump, electric
                    •  Muffler with mitered stack
                    •  Parking brake
                    •  Pre-screener
                    •  Torque divider
                    •  Planetary transmission, mechanical power shift 3F/3R speeds
                    •  Turbocharger, waste-gate
                    •  Water separator
                  • UNDERCARRIAGE
                    •  Carrier rollers (LGP)
                    •  Carrier rollers ready (STD, XR)
                    •  Equalizer bar, heavy duty
                    •  Guards, end track guiding
                    •  Guards, center track guiding (LGP)
                    •  Idlers, lifetime lubricated
                    •  Rollers, lifetime lubricated track
                    •  Track roller frames, tubular
                    •  Track adjusters, hydraulic
                    •  Sprocket rim segments, replaceable: - Track, heavy duty Sealed & Lubricated Standard arrangement - 560 mm (22 in), ES, 40-section XR arrangement - 560 mm (22 in), ES, 41-section LGP arrangement - 914 mm (36 in), MS, 43-section
                  • OTHER STANDARD EQUIPMENT
                    •  CD-ROM parts book
                    •  Engine enclosures, perforated
                    •  Mounting, lift cylinder
                    •  Lift cylinder with lines, LH
                    •  Lift cylinder with lines, RH
                    •  Front pull device
                    •  Guards, hinged bottom
                    •  Hood, perforated
                    •  Hydraulics, load sensing, dozer lift and tilt
                    •  Oil cooler, hydraulic
                    •  Product Link ready
                    •  Radiator doors, louvered, hinged
                    •  Sampling ports: - Engine oil - Power train oil - Hydraulic oil - Engine coolant
                    •  Tool box
                    •  Padlocks for battery compartment and fuel drain valve
                    •  Padlock capable compartments
                  • CD-ROM parts book
                    • Engine enclosures, perforated
                      • Mounting, lift cylinder
                        • Lift cylinder with lines, LH
                          • Lift cylinder with lines, RH
                            • Front pull device
                              • Guards, hinged bottom
                                • Hood, perforated
                                  • Hydraulics, load sensing, dozer lift and tilt
                                    • Oil cooler, hydraulic
                                      • Product Link ready
                                        • Radiator doors, louvered, hinged
                                          • Sampling ports: - Engine oil - Power train oil - Hydraulic oil - Engine coolant
                                            • Tool box
                                              • Padlocks for battery compartment and fuel drain valve
                                                • Padlock capable compartments
                                                  Built for it