The new D11 XE combines electric drive, longer component life and integrated automation to lower fuel use and operating costs
Caterpillar’s new D11 XE electric drive dozer is designed to move more material while reducing fuel consumption and operating costs.
The new dozer delivers up to 25 per cent less fuel consumed per unit of material moved and moves 5 per cent to 10 per cent more material per hour than the next generation Cat D11.
The electric drivetrain has 60 per cent fewer moving parts than a mechanical drive system, helping simplify service and lower owning and operating costs over the life of the machine.
“The D11 XE is designed to help customers get more from every hour of operation. By combining the proven capability of the D11 platform with the benefits of electric drive, it delivers meaningful gains in productivity, efficiency and lifecycle value,” said Luke Fischer, Product Application Specialist for Caterpillar.
Cat C32B engine
Helping drive the D11 XE’s productivity, efficiency and durability improvements are upgrades throughout the machine’s powertrain and major systems.
The 955-hp Cat C32B engine operates at a lower high-idle speed to help the D11 XE deliver up to 20 per cent longer life between rebuilds than the D11. Planned component repair intervals for the engine, final drives and hydraulic systems increase from 15,000 to 18,000 hours, aligning with the electric drive’s 18,000-hour rebuild centreline. The result is the most efficient and productive D11 model to date, consuming up to 20 per cent less fuel per hour and producing 20 per cent to 25 per cent fewer greenhouse gas emissions.
The Cat C32B engine delivers the same power and performance as the Cat C32, with heavier-duty internal components designed for greater durability and longer life.
“It also reflects how far dozer performance has advanced, offering up to 25 per cent greater efficiency than today’s D11 and up to 140 per cent greater efficiency than the first D11N introduced in 1986,” Fischer said.
Designed to improve efficiency while reducing drivetrain complexity, the electric drive system eliminates the bevel gear used in mechanical drive systems. The engine drives a generator that sends power through an inverter to two motors, delivering clean, consistent power to the tracks.
No gears to shift
With no gears to shift, the D11 XE electric drive system simplifies operation. A dedicated drive motor at each track provides power-turn capability for strong maneuverability and pry out force. By powering both tracks throughout the turn, the system enables smoother, sharper maneuvering and helps operators push more material through the turn.
The suspended undercarriage absorbs impact and reduces shock load transfer to the undercarriage by up to 50 per cent, helping create a smoother, more comfortable ride.
Accessible, low-effort electronic steering, ripper and dozer controls support precise maneuvering, while the primary multifunction touchscreen gives operators a clear view of machine performance and convenient access to operating settings. Together, these features help operators work more consistently and productively throughout the shift.
Fewer rebuilds
Compared with the D11, the D11 XE can achieve similar total operating hours with one fewer rebuild over the machine’s life, helping lower total cost of ownership. The electric drive generator and motors are designed to last through two machine lives with only rebearing and resealing, reducing the investment required during every other rebuild. A modular design allows major components to be removed independently, helping streamline service and minimize downtime.
“Together, these design choices mean fewer service touches and more time available for productive work,” Fischer said.
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A new radiator guard and upgraded case and frame help improve durability, extend machine life and reduce maintenance downtime.
As well, larger lift-cylinder trunnion bearings simplify service. Redesigned pin joints with replaceable bearings eliminate the need for line boring and simplify bearing-insert replacement on the ripper, blade and push-arm trunnions. Up to 85 per cent parts commonality with the D11 further supports serviceability through shared components and a familiar modular design.
Dozer tech
Integrated solutions help D11 XE operators work more efficiently, accurately and consistently. Available onboard features include: AutoCarry, 3D Grade Control, Automated Blade Assist and Automatic ripper control.
AutoCarry provides automatic blade control during the carry segment to reduce fatigue, help maintain optimum track slip and increase productivity by up to 15 per cent.
The 3D Grade Control feature uses dual ROPS-mounted GNSS antennas and blade-mounted inertial measurement unit (IMU) sensors to precisely position the cutting edge without blade-mounted masts or cables.
Automated Blade Assist (ABA)uses standard dual-tilt capability to automate blade movement to key pitch positions, helping increase efficiency and reduce operator workload.
Automatic ripper controlautomatically adjusts engine speed and ripper depth to maximize productivity, minimize track slip and reduce machine wear.
Cat MineStar
The D11 XE can be equipped with Cat MineStar solutions to help operators work more accurately, safely and efficiently.
Command for dozing offers multiple levels of remote control and semi-autonomous operation, allowing the operator to work away from the cab.
Terrain capabilities help reduce fuel use and rehandling through automated functions and blade overcut protection. Terrain for grading provides guidance such as bench heights, cycle times and material cut-and-fill volumes to help operators improve machine efficiency.
