September / October 2007
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MID-SIZED HYDRAULIC EXCAVATORS RESTYLED, OFFER COMPACT DESIGN
Caterpillar has introduced three new mid-sized hydraulic excavators – the 320D L with standard swing radius, the 320D LRR with reduced swing radius, and the 321D LCR with compact radius. The new excavators also feature the Cat C6.4 engine with ACERT Technology for fuel-efficient operation and emissions compliance. A new, spacious cab promotes operator comfort in the 320D L and 320D LRR, and a new cab layout aids operators in the 321D LCR. New styling also sets the excavators apart.
The excavators have about seven percent more engine power and increased hydraulic pressure for increased breakout force, greater lift force and increased drawbar pull, which combine to deliver faster cycle times and superior productivity.
The 320D L replaces the 320C L and has a standard tail swing radius of nine feet (2.75 m). It is designed for heavy and general construction. The 320D L has an operating weight of 47,554 pounds (21,570 kg).
The 320D LRR replaces the 320C LU. The reduced radius design of the 320D LRR has a tail swing radius of six feet, seven inches (2.00 m). The reduced radius design suits the excavator well for work in areas with restricted space, such as in cities and in industrial and demolition applications. The machine retains a full-size cab and easy service access. The 321D LCR replaces the 321C LCR. With a tail swing radius of five feet, six inches (1.68 m) the compact radius excavator has been designed to rotate with little to none of the counterweight extending beyond its tracks. To further minimize the working envelope, the boom is positioned farther back in the upper frame.
Caterpillar Inc.
RRC #6020
RRC #6020
