The new Stable Blade Control feature on Caterpillar's D6K2 track-type tractor uses technology that Cat says complements operator blade control input, helping to reduce operator effort and fatigue, while increasing productivity in finish grading applications. The feature remains activated unless cancelled by the operator.
Also, the blade pitch adjustment design has been simplified to allow the operator to adjust blade pitch, for example, selecting a more aggressive setting for hard blade loading or pitching the blade rearward for more blade carry capacity. The D6K2 offers wider VPAT blades (both standard and foldable versions), which can boost productivity as much as 8%.
For increased productivity and efficient grading and contouring work, the D6K2 can be equipped with the optional Cat AccuGrade system for automated blade control. AccuGrade can use laser, total station, or satellite positioning systems as the guidance source and is designed to reduce the need for surveying, to eliminate rework, and to unburden the operator when doing finish grading. Cat says AccuGrade reduces overall machine operating costs by doing more, and accurate, work with less fuel burned.
Traction Control is an operator-activated system that reduces track slippage under heavy load by sensing and controlling track speed, resulting in fewer situations where the operator must lift the blade to prevent track slip. The benefits include higher production, less undercarriage wear, and reduced operator fatigue. Undercarriage configurations include XL (Extra Long) and LGP (Low Ground Pressure) versions, with an LGP version that features 760-mm (30-inch) track shoes.
Eco Modes for the D6K2 can improve fuel economy by up to 22% by reducing engine speed when maximum rpm is not required. Eco Mode has two settings—forward/reverse or reverse only—that are selected via the rotary throttle. Once set, Eco Mode automatically controls engine speed at optimal levels, rapidly delivering back maximum engine speed and power when required.
The K2 models blend these new features with the basic field-proven design of their K Family predecessors, a design that includes single-lever travel/steering control, spacious operator’s station with standard air conditioning with cab-equipped, single-lever blade control, Cat Sealed-and-Lubricated Track (S<) or Cat SystemOne undercarriage. The D6K2 benefits from the recently introduced undercarriage improvements of the D6K. The combination of eight bottom rollers and two carrier rollers allow for a smoother ride and better finish grading capabilities at a higher speed.
The new D6K2 uses a Cat C6.6 ACERT engine that meets Stage IIIB and Tier 4 Interim emissions requirements. Net power ratings are 97 kW (130 hp) at 2200 rpm. The new engine features air-to-air after cooling, a new electric fuel priming pump, and a passive regeneration system for emissions reduction.