The new Cat D11T and D11T CD (CarryDozer) incorporate recent design refinements that include an Enhanced Auto Shift system, Dynamic Inclination Monitor, automatic climate control and available automated ripper control.
The new Cat D11T and D11T CD (CarryDozer) incorporate recent design refinements that include an Enhanced Auto Shift system, Dynamic Inclination Monitor, automatic climate control and available automated ripper control. Blade capacities for the new models range to 57 cubic yards and operating weights to 248,456 pounds.
The Cat C32 engine used in these new models is rated at 850 net horsepower and is available in two configurations, meeting U.S. EPA Tier 4 Final emissions standards in those geographical regions requiring a high degree of emissions control, and in lesser-regulated areas, the engine will be configured to meet U.S. EPA Tier 2-equivalent emissions standards.
The Enhanced Auto Shift (EAS) system is designed to conserve fuel by automatically selecting the optimal reverse gear and engine speed, based on load and desired ground speed. When the EAS mode is not activated, an Auto Downshift feature automatically changes gears to most efficiently handle loads.
A new Dynamic Inclination Monitor provides a readout of tractor pitch angle and side-to-side slope angle, and Automated Blade Assist Control uses preset blade-pitch positions to simplify positioning. An optional Autocarry system automatically controls the blade during the carry segment.
The new operator-presence system locks out the power train and hydraulic system to avoid unintentional machine movement when the operator is entering or leaving the cab, which can be done via an optional hydraulically actuated access ladder that deploys and stores in seconds.
An optional sound-suppression package reduces average sound power levels for both the operator and the bystander.
Komatsu’s 264-horsepower D85-18 crawler dozer, aimed at large construction operations and small mining customers, features a Komatsu SAA6D125E-7 variable geometry, turbocharged and aftercooled Tier 4-Final-certified engine that the company says burns up to 5 percent less fuel.
The D155AXi-8 is another of the company’s intelligent machine control dozers that allows automated operation.
The 173-horsepower Cat MH3027 material handler is the fourth and smallest in the series of wheeled material handlers that Caterpillar is introducing in the greater-than-25-metric-ton size class.
The Cat 336F L XE Hybrid hydraulic excavator captures and reuses energy, delivering an estimated fuel savings of up to 20 percent compared with its standard 336 counterpart.