Eight new Cat D-series excavators
Caterpillar have also recently introduced eight new D-series medium-sized hydraulic excavators with operating weights ranging from 20 tonnes to 37 tonnes, including reduced turning radius and compact radius models. Of particular interest to the quarrying the quarrying industry, however, are two models at the heavier end of this range, the 28-tonne 325D and the 37.5-tonne 330D, both of which meet all the latest EU emission and sound regulations.
The 325D is designed for high production loading, demolition and material-handling work, and can be equipped with a ‘heavy-duty/high and wide’ undercarriage option for increased stability, lifting capacity and visibility. This option is also available on the larger 330D which, in addition, can be fitted with a 345C undercarriage for ‘extreme’ service in rock and quarry applications.
Increased system pressure delivers 5% more lifting capacity (6% on the 330D) and 5% more bucket digging force, compared with previous C-series models. Likewise, stick digging force and drawbar pull are increased by 2% on both machines.
Standard bucket capacity on the 325D and 330D is 1.7m3 and 2.0m3, respectively, while maximum digging depth is 7.17m and 8.09m, and maximum reach is 10.77m and 11.64m.
Both machines feature Cat engines with ACERT technology: a 140kW (152hp) C7 engine in the 325D and a 184kW (200hp) C9 engine in the 330D. The engine coolant change interval has increased from 6,000h to 8,000h, and the hydraulic oil filters from 1,000h to 2,000h.
All the D-series medium-sized excavators are equipped with the same operator station as the Cat C-series large excavators, providing a greater viewing area and superior sight lines to the work area. The ergonomically designed cab has a heated air-suspension seat and a diagnostic monitoring system with colour display that alerts the operator to machine health warnings and automatically provides maintenance information to the operator.
The 325D is designed for high production loading, demolition and material-handling work, and can be equipped with a ‘heavy-duty/high and wide’ undercarriage option for increased stability, lifting capacity and visibility. This option is also available on the larger 330D which, in addition, can be fitted with a 345C undercarriage for ‘extreme’ service in rock and quarry applications.
Increased system pressure delivers 5% more lifting capacity (6% on the 330D) and 5% more bucket digging force, compared with previous C-series models. Likewise, stick digging force and drawbar pull are increased by 2% on both machines.
Standard bucket capacity on the 325D and 330D is 1.7m3 and 2.0m3, respectively, while maximum digging depth is 7.17m and 8.09m, and maximum reach is 10.77m and 11.64m.
Both machines feature Cat engines with ACERT technology: a 140kW (152hp) C7 engine in the 325D and a 184kW (200hp) C9 engine in the 330D. The engine coolant change interval has increased from 6,000h to 8,000h, and the hydraulic oil filters from 1,000h to 2,000h.
All the D-series medium-sized excavators are equipped with the same operator station as the Cat C-series large excavators, providing a greater viewing area and superior sight lines to the work area. The ergonomically designed cab has a heated air-suspension seat and a diagnostic monitoring system with colour display that alerts the operator to machine health warnings and automatically provides maintenance information to the operator.
