Enhanced bulldozer offers increased productivity
First publishedin Aggregates Business Europe
A number of changes have been made to Caterpillar’s D9T bulldozer, said to be popular in small mines and in aggregates operations.
The D9T, known as a track-type tractor in the Cat product line, now offers the new features that include enhanced operator safety, comfort and convenience, refined performance and increased productivity.
Powered by a Cat C18 engine with ACERT Technology, rated at 306kW, and with an operating weight of more than 49,900kg, the D9T “takes on the toughest dozing and ripping jobs.”
The company says that the D9T cab is designed and equipped for operator productivity, safety and comfort.
“A low-effort electronic dozer control handle gives the operator control of all dozer functions with one hand. Operators will enjoy comfort features such as adjustable arm rests, new automatic climate control and the standard Cat Comfort Series Seat now available with optional heat and ventilation,” says Caterpillar.
The new Dynamic Inclination Monitor provides readouts of the tractor’s pitch angle and side-to-side slope, and a 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, assisted by redesigned steps, handles and guardrails.
An available visibility package includes mirrors on the lift cylinders and a ROPS-mounted camera system with an 18cm colour monitor near the rear view mirror. In-cab sound levels are decreased from 79-77dB(A).
“An optional automatic ripper control simplifies the operator’s job by keeping drawbar load constant and minimising track slip. In addition, Automated Blade Assist uses blade-pitch presets to simplify positioning, and an optional Autocarry system automatically adjusts blade load during the carry segment.
“New for the D9T is the Enhanced Auto Shift (EAS) system, which provides operator-selectable forward and reverse speeds similar to an automatic transmission. The EAS system can provide increased production, fuel efficiency and ease of operation.
“A new air-to-oil hydraulic cooler results in lower hydraulic oil temperatures for extended component life, and the hydraulically driven, variable-speed demand fan provides optimal cooling while using less power, reducing fuel consumption and lowering sound levels,” says Caterpillar.