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 powertrain 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. The D7E meets U.S. Tier 4 Interim/EU Stage IIIB/Japan MLIT Step 4 emission standards.
Engine Model | Cat® C9.3 ACERT™ |
Flywheel Power | — |
Operating Weight | — |
Engine Model | Cat® C9.3 ACERT™ |
Flywheel Power | — |
Bore | — |
Stroke | — |
Displacement | — |
Net Power - Maximum - ISO 9249/SAE J1349 (DIN) | — |
Engine Power - Maximum - SAE J1995 | — |
Net Power - Maximum - ISO 9249/SAE J1349 | — |
Net Power - Rated - ISO 9249/SAE J1349 (DIN) | — |
Net Power - Rated - ISO 9249/SAE J1349 | — |
Global Emissions | U.S. Tier 4 Interim/EU Stage IIIB/Japan MLIT Step 4 |
Engine Power - Maximum - ISO 14396 | — |
Engine Power - Maximum - ISO 14396 (DIN) | — |
Fuel Tank | — |
Cooling System | — |
Engine Crankcase | — |
Final Drive - Each | — |
Pivot Shaft Compartment | — |
Hydraulic Tank | — |
Final Drive - Each - LGP | — |
Powertrain | — |
Operating Weight | — |
Shipping Weight | — |
Shipping Weight - STD | — |
Operating Weight - STD SU | — |
Shipping Weight - LGP | — |
Operating Weight - LGP S | — |
Tilt Cylinder Flow - Head End Flow | — |
Tilt Cylinder Flow - Rod End Flow | — |
Pump Output - Implement | — |
Pump Type | Piston, Variable Displacement |
Pump Output - Steering | — |
Lift Cylinder Flow | — |
Ripper Cylinder Flow | — |
Pressure Setting - Steering | — |
Ripper - Lift | — |
Bulldozer | — |
Ripper - Pitch | — |
Steering | — |
Tilt Cylinder | — |
Maximum Penetration Force | — |
Beam Cross Section | — |
Each Additional Shank | — |
Shank Gauge | — |
Maximum Clearance Raised - Under Tip, Pinned in Bottom Hole | — |
Pry-Out Force | — |
Ramp Angle | — |
Weight - With One Shank | — |
Pocket Spacing | — |
Shank Section | 72 mm × 228 mm (2.8 in × 9.0 in) |
Type | Multi-Shank |
Number of Pockets | 3 |
Overall Beam Width | — |
Maximum Penetration | — |
Winch Case - Length | — |
Maximum Full Drum - Line Speed | — |
Winch Model | PA90 |
Maximum Bare Drum - Line Pull | — |
Rope Diameter - Recommended | — |
Weight | — |
Throat Clearance | — |
Winch Case - Width | — |
Installed Weight | — |
Overall Width | — |
Maximum Full Drum - Line Pull | — |
Maximum Bare Drum - Line Speed | — |
Control | Electronic/Hydraulic |
Cable Ferrule Size - O.D. × Length | 60 mm × 65 mm (2.38 in × 2.56 in) |
Winch Length | — |
Winch Drive | Hydraulic |
Oil Capacity | — |
Winch and Bracket Length | — |
Increased Tractor Length - STD | — |
Increased Tractor Length - LGP | — |
Drum Diameter | — |
Drum Width | — |
Flange Diameter | — |
Drum Capacity - 24 mm (1 in) | — |
Drum Capacity - 29 mm (1.13 in) | — |
Ferrule Size (O.D. × Length) | 60 mm × 65 mm (2.38 in × 2.56 in) |
ROPS | Rollover Protective Structure (ROPS) meets the following criteria: ISO 3471:2008 |
FOPS | Falling Object Protective Structure (FOPS) meets the following criteria: ISO 3449:2005 Level II |
Cab | ANSI/SAE J1166 OCT98 |
Brakes | Crawler Machine Brake Requirements meets the following criteria: ISO 10265:2008 |
AC Compressor Nominal Input Voltage | — |
Electric Water Pump System Nominal Input Current | — |
AC Compressor Maximum Input Current | — |
Electric Water Pump System Nominal Input Voltage | — |
Type | Electric Drive |
AC Generator and Propulsion Module Voltage | — |
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.
The D7E features a Cat C9.3 ACERT engine and a Cat Clean Emissions Module aftertreatment to deliver the performance and efficiency that customers demand, while meeting U.S. Tier 4 Interim/EU Stage IIIB/Japan MLIT Step 4 emission standards. The efficient drivetrain allows the engine to operate in a tighter rpm range, 1,500 - 1,800 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.
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 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.
The Cat NOx Reduction System captures and cools a small quantity of exhaust gas, then routes it into the combustion chamber where it drives down combustion temperatures and reduces NOx emissions.
To meet U.S. Tier 4 Interim/EU Stage IIIB/Japan MLIT Step 4 emission standards, Cat aftertreatment components have been designed to match application needs. System components include a Diesel Oxidation Catalyst (DOC), which uses a chemical process to convert regulated emissions in the exhaust system, and a Diesel Particulate Filter (DPF) that traps particulate matter that is carried into the exhaust stream. The DOC, DPF and Cat Regeneration System are contained in a Caterpillar designed Clean Emissions Module (CEM) that protects the components, minimizes the aftertreatment footprint and simplifies maintenance. For high debris applications that require thermal shields on exhaust components, an optional insulated CEM is available for the D7E.
The Cat Regeneration System is designed to work transparently, without any interaction needed from the operator. Under most operating conditions, engine exhaust is hot enough to oxidize soot through passive regeneration. If supplemental regeneration is needed, the Cat Regeneration System elevates exhaust gas temperatures to burn off soot in the Diesel Particulate Filter (DPF). This is a process that happens automatically, but the operator can initiate the cycle when convenient or interrupt regeneration as needed. Soot level monitor and regeneration indicator lights are integrated into the dash display.
Delayed Engine Shutdown feature is available to allow the machine to cool immediately after a heavy work load or regeneration cycle.
An optional Engine Idle Shutdown timer will sound a warning and shut down the engine after the machine has been idling for a pre-set period of time.
Caterpillar is the only manufacturer to offer fully-integrated electronic technology solutions that enable greater accuracy, higher productivity, lower operating costs and more profitability.
AccuGrade uses positioning and guidance technologies, machine sensors, and automatic blade control to help operators get to grade faster, easier and more efficiently. Digital design plans, real-time cut/fill data, and in-cab guidance give operators detailed information to work more confidently and achieve greater accuracy, in fewer passes, using less material. Operators can stay on grade and improve productivity and accuracy by nearly 50 percent over conventional methods. Grade stakes and checkers are minimized, making the work site safe, efficient, and cost effective. AccuGrade technologies include Cross Slope, Sonic, Laser, GPS, and/or Universal Total Station (UTS).
Product Link helps take the guesswork out of equipment management with remote monitoring capabilities for your machine or your entire fleet. Track asset location, hours, fuel usage, diagnostic codes, idle time and more through the secure VisionLink™ user interface, powered by Trimble. Knowing where your equipment is, what it's doing and how it's performing enables you or your Cat dealer to manage your fleet in real-time so you can maximize efficiency, improve productivity, and lower operating costs. *Product Link licensing not available in all areas. Please consult your Cat dealer for availability.
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.
The D7E redefines serviceability. With easy access to service points and longer service intervals, the D7E can significantly reduce total owning and operating costs. A tilt cab allows easy access to modular major components, such as generator, propulsion module, power electronics and hydraulics. The heating, ventilation and air conditioning (HVAC) system is self contained for improved performance, increased service intervals and ease of serviceability. Service points are grouped on the left side of the machine for quick and easy routine maintenance. Ground-level sight gauges provide quick and easy inspection of fluid levels. Modular final drives can be easily accessed and serviced.
The ground level service center is accessible on the left hand fender without setting foot on the machine, giving easy access to the battery disconnect, remote engine shutdown and optional access light switches. It also houses an LED warning indicator showing that the powertrain and accessory systems are energized. When the systems are de-energized and safe for maintenance, the indicator turns off.
From helping you choose the right machine to knowledgeable ongoing support, Cat dealers provide the best in sales and service. Manage 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. Cat dealers can even help you with operator training to help you boost profits. And when it's time for machine replacement, your Cat dealer can help you save even more with Genuine Cat Remanufactured parts. Receive the same warranty and reliability as new products at cost savings of 40 to 70 percent for powertrain and hydraulic components.
The D7E features an advanced undercarriage design for greater machine versatility in a wider range of applications. Enhanced visibility, especially to the sides, is only one of the many benefits of this highly efficient undercarriage system. D10-size sprocket bearings offer added durability. Shock loads are directed through the roller frame to reduce wear and tear on the machine - and on the operator. The Heavy Duty undercarriage system components are designed for extended wear life in abrasive conditions and rocky or uneven terrain. The Standard arrangement is designed for versatility and works in a variety of soil conditions. The LGP configuration increases track contact area and reduces ground pressure for improved stability and excellent flotation in soft ground conditions.
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