Cat D7E Track-Type Tractor

Note: Productivity, efficiency and owning/operating cost compared to previous D7R2 model.

A revolutionary Electric Drive system is designed to deliver quantum leaps in improved productivity and fuel efficiency. The D7E is up to 30 percent more fuel efficient than the D7R2. Better fuel economy plus greater productivity means you can move up to 35 percent more material per gallon/liter of fuel. And the D7E is more productive – moving 10 percent more material per hour. Fewer moving parts, less fuel and fluid and longer service intervals help reduce lifetime owning and operating costs.

Electric generator, power inverter and propulsion module replace traditional components like a torque converter and transmission. A Cat C9.3 ACERT engine turns a powerful electric generator that efficiently converts mechanical energy into AC electrical current.

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, featuring state-of‑the-art AC electric motors, delivers well-modulated torque via axles to the final drives.

Drive train electrical components are fully sealed, so the D7E can 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 uses a three-part, aluminum bar core radiator for charged air, jacket water and the separate circuit. The single-plane design allows for easier cleaning and a 6-fins-per-inch design helps reduce plugging. A molded shroud ensures efficient air flow and the fan utilizes lightweight, durable blades for high efficiency and quiet operation. In cooler conditions, the hydraulic demand fan reduces speed to conserve power, save fuel and decrease sound levels. An optional reversing fan is available for high debris conditions.

Standard Stable Blade Control complements operator input to automatically make instantaneous adjustments for smoother grading results with less effort.

Field-proven system senses the load and continuously adjusts hydraulic power to maximize your work tool efficiency.

GRADE technologies combine digital design data, in-cab guidance, and automatic controls to enhance grading accuracy, reduce rework, and lower costs related to production earthmoving and rough, fine and finish grade applications.

Semi-Universal, Universal, Straight and Angle blades are designed with a strong box section to stand up to the most severe applications. Heavy moldboard construction, hardened bolt-on cutting edges and end bits add strength and durability. Dual Tilt option is available on S/SU/U blades for more productive dozing. Specialty blades are also available for waste, coal and wood chip applications.

• Specialized guarding, striker bars and seals help protect the machine from impact and airborne debris.
• Purpose-built heavy duty final drive guarding help prevent wire, cables, rope and debris from wrapping into the final drive seals.
• Heavy duty sealed bottom guards protect the engine and power train system.
• Reversing fan and single plane cooling cores with 6 fins per inch are ideal for high debris environments. Easy access clean out.
• Insulated Clean Emissions Module for thermal protection.
• Lights are mounted up and away from main debris area for protection, while still giving you plenty of light on the work area.
• Specialized air handling features help deliver cleaner air to the machine and to the cab.

• Specialized guarding and seals help protect the machine from damage and debris build-up.
• Single-plane cooling package for cooling efficiency, reduced plugging and easier clean-out. Hydraulic demand fan offers efficient cooling and reverses to reject debris.
• Insulated Clean Emissions Module and thermal shields.
• Additional features like a turbine precleaner and roof-mounted filter help protect both the machine and the operator in high debris conditions.

Knowledgeable Cat dealers have a global reputation for providing outstanding sales and service. Maximize your equipment investment with a Customer Support Agreement tailored to meet your business needs. Take advantage of preventive maintenance programs like Custom Track Service, Scheduled Oil Sampling (S·O·SSM) analysis, and guaranteed maintenance contracts. Cat dealers can even help you with operator training to help boost your profits. When you need repairs, Cat dealers and our unmatched Caterpillar distribution network excel at getting you the right parts you need quickly. Many times the right part is a genuine Cat Reman part. Remanufactured parts offer you the same warranty and reliability as new parts at a fraction of the cost. The breadth of the Reman offering ensures cost effective repairs or rebuilds of your engine and hydraulic components on the D7E. Rebuilt electric drive components such as the APC and Inverter are also currently available with additional options in the works. Caterpillar strives to provide customers the lowest owning and operating costs over the life of their machine.

    
• Meets Tier 4 Final/Stage IV/Japan 2014 (Tier 4 Final) emission standards.
    
• Up to 30 percent more fuel efficient than the D7R2. Efficient use of Diesel Exhaust Fluid (DEF) gives you excellent overall fluid efficiency.
    
• In the first four years of production, D7E customers saved more than 13.25 million liters (3.5 million gallons) of diesel fuel compared to the D7R2. Significant fuel savings means reduced emissions and lower costs.
    
• The D7E earned a 2009 Clean Air Excellence Award from the U.S. Environmental Protection Agency.
    
• Major components are built to be rebuilt, reducing waste and saving you money by giving your dozer a second – and even third – life.