Cat updates D11 dozer to deliver higher productivity

Caterpillar has re-engineered its largest dozer, the D11, which comes with new load-sensing hydraulics and high-horsepower reverse combined with the latest technology to move more material at a lower cost per tonne
Cat updates D11 dozer to deliver higher productivity Cat updates D11 dozer to deliver higher productivity Cat updates D11 dozer to deliver higher productivity Cat updates D11 dozer to deliver higher productivity Cat updates D11 dozer to deliver higher productivity

New Cat D11 contouring mined land

Staff reporter

PRESS RELEASE: Engineered to be rebuilt multiple times, Caterpillar said the new D11 has a redesigned mainframe that delivers a lower total cost of ownership over the life of the machine.

New load-sensing hydraulics and new drivetrain components can deliver up to 8% fuel efficiency gains. The variable hydraulic pumps adjust output to meet demand, which can save energy, reduce heat generation and extend component life. The new stator clutch torque divider also provides improved drivetrain efficiency. When combined with the new, high-horsepower reverse function, the machine delivers 4-8% greater productivity while burning less fuel.

According to Caterpillar, redesigned structures and components increase reliability and durability for higher utilisation. For example, the larger equaliser bar features an improved bearing design to increase reliability. The new D11 also improves on the time-tested elevated sprocket undercarriage with a more robust track roller frame to extend component service life.

Available with a choice of emissions solutions to meet regional requirements, the Cat C32 engine delivers power ratings of 634kW (850hp) forward and 712kW (955hp) reverse for increased performance. A new single-plane cooling system design better dissipates heat to maintain consistent operating temperatures, even in extreme heat, and it provides easier core cleanout. Improved reversing fan function delivers greater reverse airflow for radiator cleanout.

A 30% larger engine oil sump capacity extends preventive maintenance intervals to 500 hours in challenging environments, giving customers more uptime. The ground-level electrical centre provides convenient access to the lockout control, engine shutdown switch, and switches for access ladder raise/lower and remote-control mode options. Service technicians can also fill the Auto Lube system and change the coolant and hydraulic, engine and powertrain oil from the ground. 

Caterpillar said it offers a range of standard and optional technologies for the new Cat D11 Dozer, so operations can get work done more efficiently, more accurately and at a lower cost. Standard Automated Blade Assist makes use of pre-set blade pitch position to increase efficiency while reducing operator workload. Fuel efficiency and productivity are optimised through Enhanced Auto Shift, which automatically selects the optimal gear and engine speed based on powertrain load and desired ground speed.

Available AutoCarry automatically changes blade position to keep track slip at a minimum to optimise productivity when pushing a load. The optional Auto Ripper Control reduces operator fatigue and decreases machine wear by monitoring and automatically adjusting engine speed and ripper depth to minimise track slip. Cat Product Link, also available, enables remote reporting of critical operating data like machine location, operation and condition, and allows data tracking from anywhere through VisionLink.

Available Cat MineStar technologies for the D11 include Terrain for grading, which guides the operator in grading to plan and boosts productivity by reducing rework. Command for dozing offers multiple levels of remote control, as well as semi-autonomous operation, which enables a single remotely located operator to manage several dozers.

The new Cat D11 Dozer will be commercially available in June quarter 2019.