Mining operations depend on dozers that move more material efficiently while helping control fuel consumption and operating costs. The new Cat® D11 XE electric drive dozer is designed to help customers do exactly that, delivering up to 25% less fuel consumed per unit of material moved and moving 5 – 10% more material per hour than the next generation Cat D11. Its electric drivetrain has 60% fewer moving parts than a mechanical drive system, helping simplify service and lower owning and operating costs over the life of the machine.
Helping drive the D11 XE’s productivity, efficiency, and durability improvements are upgrades throughout the machine’s powertrain and major systems. The Cat C32B engine operates at a lower high-idle speed to help the D11 XE deliver up to 20% 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 hr, aligning with the electric drive’s 18 000 hr rebuild centreline. The result is the most efficient and productive D11 model to date, consuming up to 20% less fuel per hour and producing 20% to 25% fewer greenhouse gas (GHG) emissions.
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.
“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.
“It also reflects how far dozer performance has advanced, offering up to 25% greater efficiency than today’s D11 and up to 40% greater efficiency than the first D11N introduced in 1986.”