D7E

The Cat® D7E was designed to meet growing demand for powerful yet highly maneuverable track-type tractors. By adapting electric drive technology to the unique requirements of dozer applications, Caterpillar has developed an all-new class of tractor that delivers the best possible balance of heavy-dozing and fine-grading performance. The innovative diesel-electric hybrid technology of the D7E is also designed to burn considerably less fuel and consume fewer fluids and parts for reduced owning and operating costs. Improved productivity and efficiency means getting more work done while using fewer resources.


SPECIFICATIONS
Engine
Engine Model Cat® C9.3 ACERT™
Flywheel Power 235.0 hp
Gross Power 252.0 hp
Net Power - Caterpillar 235.0 hp
Net Power - ISO 9249 235.0 hp
Net Power - SAE J1349 235.0 hp
Net Power - EU 80/1269 235.0 hp
Bore 4.5 in
Stroke 5.9 in
Displacement 567.0 in3
Gross Power - ISO 14396 253.0 hp


Weights
Operating Weight 56669.0 lb
Shipping Weight 47619.0 lb
Operating Weight - STD SU 56669.0 lb
Shipping Weight - LGP 52866.0 lb
Operating Weight - LGP S 62115.0 lb


Service Refill Capacities
Fuel Tank 108.0 gal
Cooling System 22.5 gal
Engine Crankcase 8.0 gal
Power Train 16.0 gal
Final Drives (each) 9.0 gal
Pivot Shaft Compartment 1.8 gal
Hydraulic Tank 20.0 gal
Final Drive (LGP each) 11.0 gal
Fuel Tank, High Capacity 126.0 gal


Hydraulic Controls - Maximum Operating Pressure
Bulldozer 4000.0 psi
Tilt Cylinder 4000.0 psi
Ripper (Lift) 4000.0 psi
Ripper (Pitch) 4000.0 psi
Steering 5950.0 psi


Ripper
Pocket Spacing 35.4 in
Ramp Angle 26.0 Degrees
Shank Gauge 70.9 in
Shank Section 72 mm x 228 mm 2.8 in x 9.0 in
Weight - With One Shank 3572.0 lb
Type Multi-Shank
Number of Pockets 3
Overall Beam Width 82.2 in
Beam Cross Section 355 mm 14.0 in
Maximum Clearance Raised (under tip, pinned in bottom hole) 23.1 in
Maximum Penetration 25.6 in
Maximum Penetration Force 19639.0 lb
Pryout Force 52695.0 lb
Weight - Each Additional Shank 330.0 lb


Drive Train
AC Compressor Maximum Input Current 12.0 amps
AC Compressor Nominal Input Voltage 320.0 volts
AC Generator and Propulsion Module Voltage 480.0 volts
Electric Water Pump System Nominal Input Current 5.0 amps
Electric Water Pump System Nominal Input Voltage 320.0 volts
Type Electric Drive


Hydraulic Controls - Pump
Pump Output - Implement 52.8 gal/min
Pump Output - Steering 82.4 gal/min
Pump Type Piston, Variable Displacement
Tilt Cylinder Flow - Head End Flow 24.6 gal/min
Tilt Cylinder Flow - Rod End Flow 17.4 gal/min
Lift Cylinder Flow 42.0 gal/min
Ripper Cylinder Flow 42.0 gal/min


Hydraulic Controls - Main Relief Valve
Pressure Setting - Steering 4000.0 psi


Winch
Cable Ferrule Size (O.D. × Length) 60 mm x 65 mm 2.38 in x 2.56 in
Control Electronic/Hydraulic
Installed Weight 3350.0 lb
Maximum Bare Drum Line Pull 90000.0 lb
Maximum Bare Drum Line Speed 70.0 ft/min
Maximum Full Drum Line Pull 57000.0 lb
Maximum Full Drum Line Speed 116.0 ft/min
Overall Width 43.0 in
Rope Diameter (recommended) 1.0 in
Throat Clearance 8.6 in
Winch Drive Hydraulic
Winch Length 43.9 in
Winch Model PA90
Weight* 3350.0 lb
Oil Capacity 3.2 gal
Winch and Bracket Length 93.9 in
Winch Case - Length 43.7 in
Winch Case - Width 32.5 in
Increased Tractor Length - STD 93.9 in
Increased Tractor Length - LGP 93.9 in
Drum Diameter 12.5 in
Drum Width 8.9 in
Flange Diameter 24.0 in
Drum Capacity - 24 mm (1 in) 203.0 ft
Drum Capacity - 29 mm (1.13 in) 185.0 ft
Ferrule Size (O.D. × Length) 60 mm x 65 mm 2.38 in x 2.56 in


Standards
ROPS/FOPS SAE 1040, ISO 3471-1994/ISO 3449-2005, SAE 5231
Cab ANSI/SAE J1166 OCT 98
Brakes ISO 10265 2008


BENEFITS & FEATURES
Power Train
First-of-its-kind Electric Drive delivers power and efficiency.


Power Train

The electric generator, power inverter and propulsion module in the electric drive system replace traditional mechanical components such as a torque converter and transmission. The Cat® C9.3 engine with ACERT™ Technology turns a powerful electric generator that efficiently converts mechanical energy into AC electrical current. Electrical current from the generator flows through specially armored cables and military grade connectors to a solid-state power inverter. Advanced electronics send AC current to the propulsion module to control the motors and provides DC current for the accessory systems. The propulsion module delivers well-modulated torque via axles to the final drives. Consisting of state-of-the-art AC electric motors—and connected to the D7E updated differential steering system—the propulsion module has no moving electrical contacts and few moving mechanical parts. All electrical components are fully sealed to safely operate in a wide range of dozing conditions. Liquid cooling ensures that the electric drive components deliver peak performance in extreme temperature conditions. The D7E electric drive system is highly efficient at delivering engine power to the ground. Infinitely variable speed control, means there are no gears to shift. Operators can concentrate on the task and the job site, rather than on shifting gears and managing engine speed. Training is simplified as well. A proven differential steering system combines with electric drive to make the D7E the only system that can perform locked-track pivot turns for better maneuverability. A dedicated D8-size steering pump delivers improved performance.

Benefits
  • Fuel efficiency: 10 - 30 percent less fuel burned per hour.
  • Reduced owning and operating costs: Fewer moving parts, longer drive train component life, reduced lifetime service and maintenance.
  • Resourceful: Designed to use less fuel and fluids, and fewer replacement parts.
  • Increased efficiency: Lower fuel usage per cubic yard of material moved.
  • Increased productivity: More material moved per hour.
  • Versatility: Power, smooth operation and maneuverability for a wide variety of applications.

Engine
ACERT™ Technology.


Engine

The D7E electric drive train is powered by a 235 hp Cat C9.3 engine with ACERT™ Technology. The engine utilizes a proven common rail fuel system for improved efficiency and fuel economy. Featuring the latest in Cat emissions reduction technologies, this engine meets U.S. EPA Tier 3, EU Stage IIIa and Japan MLIT Step 3 emissions regulations. The efficient drive train allows the engine to operate in a tighter rpm range, 1500 - 1800 rpm, which helps extend engine life and improve fuel economy. The increased drivetrain efficiency also allows the machine to achieve greater performance at lower horsepower than previous models, adding even more to the D7E overall benefits.

Features
  • Beltless design: Accessory systems are electrically powered, so engine belts and alternators are not needed.
  • Serviceability: Electric priming pump and easier engine access make service easier.
  • Leak Protection: Components are sealed, preventing leaks and protecting fluids from contamination.

Cooling System
Efficient and easy to service.


Cooling System

The D7E cooling system uses a three-part radiator built with rugged, highly efficient aluminum bar cores for charged air, jacket water, and the separate circuit. Although the jacket water and separate circuit coolant operate at different temperatures, the radiator appears and acts as one integrated unit. Airflow is managed by a hydraulic variable speed demand fan, reducing power requirements and fuel consumption. A molded shroud ensures efficient air flow through the radiator and the fan utilizes lightweight, durable fiberglass blades for high efficiency and quiet operation. A larger gap between fins reduces plugging, and the single-plane design allows for easier cleaning and service.

Operator Station
Unprecedented all-around visibility and comfort.


Operator Station

The all new D7E cab is designed to maximize operator efficiency. From the operator’s seat, the single center post aligns perfectly with the air intake, exhaust and lift cylinder, greatly enhancing forward visibility. The angled door provides more side glass area, improving sightlines to the blade and all around the job site. That helps operators work more confidently and productively all shift long and enhances job site safety.

  • The cab offers more interior space, as well as wider, swing out doors for easier cab access.
  • Ergonomic controls are fully adjustable and designed for low-effort comfort. Switches and controls for various systems are located within easy reach of the operator.
  • Interior noise levels are reduced to a quiet 73 dB(A).
  • A single-unit heating, ventilation and air conditioning (HVAC) system is self contained and powered by electrical current from the accessory power converter. It has no belts, needs no long refrigerant lines, and maintains maximum cooling efficiency even when the machine goes to idle.
  • An integrated display screen provides a range of machine status information, plus safety, service and maintenance-related alerts. Built-in connections and mounts make for easy installation of a grade control system display.
  • A speed recall feature allows operators to pre-set the desired forward and reverse travel speed, and then resume that speed simply by pressing a button.

Undercarriage
Durable versatility.


Undercarriage

The D7E features an advanced low drive undercarriage design for greater machine versatility in a wider range of applications. Improved visibility, especially to the sides, is only one of the several benefits of this highly efficient undercarriage system. D10-size sprocket bearings give the D7E the added durability for a wide range of applications. Shock loads are directed through the roller frame to reduce wear and tear on the machine - and on the operator. The low drive undercarriage configuration also allows the cab to be tilted for convenient service access to the drive train system.

Heavy Duty Undercarriage
The heavy duty undercarriage system is well suited to aggressive, high impact applications such as logging, side-slopes, or working in rocky or uneven terrain. The components are designed for extended wear life in abrasive conditions and high impact applications. The heavy duty track features improved track shoe design - increased grouser height, enhanced penetration, increased leading and trailing edge of shoe and increased track overlap.

Optional SystemOne™ Undercarriage
The optional SystemOne™ undercarriage has been proven to reduce total undercarriage owning and operating costs up to 70 percent. SystemOne features lifetime sealed and lubricated cartridges to eliminate bushing turns, and sprockets require no replacement during the life of the chain. A rotating bushing design allows the center tread idlers and sprocket segments to last through at least two sets of track. An open and smooth roller frame design reduces mud buildup and enables easy clean-out. In addition, all SystemOne undercarriage components are designed to work and wear as a system. They deliver long, balanced wear life and require very little service between undercarriage overhauls.

Undercarriage Configurations
STD - designed for versatility, this undercarriage configuration works in a variety of soil conditions. It provides the proper ground contact and pressure to maximize your productivity. LGP - designed to work in soft and spongy conditions. Wide track shoes, long track frames, and a wider gauge increases track contact area and reduces ground pressure for improved stability providing excellent flotation in swampy conditions.

Technology Solutions
Systems to achieve even greater productivity.


Technology Solutions

AccuGrade™ System for Track-Type Tractors
Caterpillar is helping customers revolutionize the way they move material with new technology solutions for earthmoving machines - solutions that provide greater accuracy, higher productivity, lower operating costs and more profitability. The AccuGrade System is designed and integrated into the machine and hydraulic systems to create an automated blade control. Blade-mounted sensors calculate precise blade slope and elevation information. The integrated electro-hydraulic valve control module uses the information from the sensors to automatically adjust the blade to maintain grade. Automated blade control allows operators to improve efficiency and productivity by achieving grade faster and in fewer passes than ever before, reducing the need for traditional survey stakes or grade checkers.

Grade Control Ready
The D7E ships from the factory with grade control system wiring and mounting points already installed. This makes adding AccuGrade quick and easy, and optimizes performance and reliability. Productivity is further enhanced by the D7E distributed electro-hydraulic system. Hydraulic valves are placed next to the components they control for quicker response and faster cycle times.

Cat Product Link
Cat® Product Link enables convenient remote monitoring of equipment. Get useable information to keep jobs on schedule, maintain machine health and reduce fleet owning and operating costs.
  • Simplify fleet management and monitor machine use.
  • Link all machines, regardless of brand.
  • Three levels of insight to meet specific business requirements.

Work Tools
Designed for performance and versatility.


Dozer Blades
The D7E features a robust, single lift cylinder design. The single cylinder delivers the same power as a dual-cylinder system, but with fewer than half the components. Blade stability is excellent, supported by L-shaped push arms. Dozer blade capacity is the same as previous models, although the D7E blade enhances durability with thicker plating.

Blade Options
  • Universal Blade
  • Semi-Universal Blade
  • Straight Blade
  • Angle Blade

Rear Attachments
Distributed hydraulics and commonality among D7E rear Work Tools help maximize productivity and efficiency. A well-balanced machine design means counterweights are not needed when a rear work tool is not attached.

• Ripper
The ripper on the D7E is placed closer to the machine for improved balance. The Ripper Auto Stow function allows the operator to automatically raise and position the ripper for the next pass. Cast-in ripper mounts mean the machine comes ready-to-pin from the factory, so a ripper can be mounted quickly and easily.

• Winch
The hydraulically driven winch for the D7E features positive load control with variable speed, a dual braking system, a single lever control and a standard three roller fairlead.

• Drawbar
The drawbar for the D7E is suited for a variety of applications, including disks, compactors, chopper wheels, pull-type scrapers and retrieving other equipment.

Serviceability
Increase uptime by reducing service time.


Serviceability

The D7E redefines serviceability. With easy access to service points and increased servicing intervals, the D7E can significantly reduce total owning and operating costs.
  • Service points are grouped on the left side of the machine for quick and easy routine maintenance.
  • A tilt cab allows easy access to modular major components, such as generator, propulsion module, power electronics and hydraulics.
  • A battery disconnect switch initiates safe shutdown of the electric drive system for maintenance.
  • Longer service intervals on fluids and filters.
  • Modular final drives can be easily accessed and serviced.
  • The heating, ventilation and air conditioning (HVAC) system is self contained for improved performance, increased service intervals and ease of serviceability.
  • Electric drive reduces maintenance requirements by eliminating belts, engine-mounted compressors, alternator, clutches and transmission control valves.
  • Ground-level sight gauges provide quick and easy inspection of fluid levels.
  • Maintenance-free, heavy duty batteries with disconnect switch.
  • Remote electric priming pump and under-hood servicing light.
  • Optional high-speed oil change system.
  • Optional remote jumpstart receptacle.
  • Cat monitoring system.

Customer Support
Count on Cat dealers for business solutions.


Selection
Cat dealers can help customers compare and choose the right machine for their business.

Financing
Cat dealers offer financing options to meet a variety of needs.

Operation
Improve operating technique for better productivity and profit with the latest Cat dealer training resources.

Product Support
Cat dealers are with customers every step of the way with unsurpassed worldwide parts support, trained technicians and customer support agreements.

Sustainability
Resourceful in every way.


Sustainability

The D7E is designed to maximize efficiency and productivity while conserving natural resources.
  • Burns 10 - 30 percent less fuel per hour than previous models. Less fuel burned means reduced emissions.
  • The D7E earned a 2009 Clean Air Excellence Award from the U.S. Environmental Protection Agency.
  • More efficient - 25 percent more material moved per gallon/liter of fuel.
  • Fewer parts and longer component life, less fuel and fluids, means less to replace and less to dispose of.
  • Major structures and components are built to be rebuilt, reducing waste and replacement costs.

EQUIPMENT
Standard Equipment

ELECTRICAL
  • Accessory Power Converter (APC)
  • Alarm, Backup
  • Batteries, Heavy Duty
  • Converter, 24V to 12V, 10 Amp
  • Heater, Engine Coolant, 120V
  • Horn, Forward Warning
  • Product Link
OPERATOR ENVIRONMENT
  • Air Suspension Seat
  • Armrest, Adjustable
  • Bidirectional Shift Switch
  • Center Post Cab, ROPS/FOPS
  • Continuously Variable Speed Control
  • Differential Steering
  • Electro-Hydraulic Controls
  • Electronic Monitoring System
  • Foot Supports, Dash
  • Hour Meter, Electronic
  • Machine Isolation, Operator Presence
  • Mirror, Rearview
  • Modular HVAC, Cab Mounted
  • Radio Ready, 12V
  • Seat Belt, Retractable 3" (76 mm)
  • Speed Recall Button
  • Throttle Dial, Electronic
  • Tilt Cab and Tilt Cab Jack
  • Travel Control Pedal
  • Wipers, Intermittent
POWER TRAIN
  • Aftercooler
  • Air Cleaner, precleaner with strata tube dust ejector
  • C9.3 ACERT Engine
  • Continuously Variable Speed Transmission
  • Coolant, Extended Life
  • Drains, Ecology, Power Train
  • Electronic Air Cleaner Service Indicator
  • Fan, Hydraulically Driven Demand
  • Final Drives, Double Reduction
  • Fuel Priming Pump, Electronic
  • Muffler
  • Parking Brake, Electronic
  • Prescreener
  • Starting Aid, Ether
  • Turbocharger, Wastegated
  • Water Separator
UNDERCARRIAGE
  • Heavy Duty Track (610 mm/24” MS)
  • Heavy Duty Track (914 mm/36” MS) (LGP)
  • Guards, End Track Guiding
  • Idler Guards
  • Master Link
  • Rollers and Idlers, Lifetime Lubricated
  • Sprocket Rim Segments, Replaceable
  • Track Adjusters, Gas Spring Recoil, Grease Track Adjust
OTHER STANDARD EQUIPMENT
  • CD ROM Parts Book
  • Engine Enclosures, Perforated
  • Front Tow Hook
  • Grade Control Ready
  • Guards, Hinged Bottom
  • Hood, Perforated
  • Hydraulics, Load Sensing, Dozer Lift and Tilt
  • Oil Cooler, Hydraulic
  • S•O•SSM Sampling Ports
  • Radiator Doors, Louvered, Double Hinged
  • Vandalism Protection for Fluid Compartments and Battery Box

Optional Equipment

610 mm, 660 mm, 914 mm (24", 26", and 36") Track Pads
AccuGrade Ready Installation Arrangement
Black Hood and Back of Blade
Cold Weather Attachments
Engine Coolant Heater, 240 V
Enhanced Clean Cab
Fast Fuel
Final Drive Clamshell Guards
Final Drive Flange Protection
Front and Rear Screens
Heated Seat
Heavy Duty Grill Door, Hinged
Lights
  • Basic (6) Lights
  • Premium (10) HID Lights
Multi-shank Ripper and Ripper Hydraulics
Power Train Oil Change System
Rear Vision Camera
Reversible Fan
Sound Suppression (Europe)
SU (Semi-universal), U (Universal), (S) Straight, and Angle Blades
Sweeps (without canopy)
SystemOne Undercarriage
Track Guide Guards
Turbine Precleaner
Waste (Landfill) Arrangements
Winch Arrangement (PACCAR PA90)
Winch Hydraulics
Woodchip Arrangement

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