Caterpillar

Pipeline & Gas Journal, July, 2007

Caterpillar recently introduced three 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 D-Series machines are said to feature greater performance and versatility than the C-Series machines they replace.

The new excavators also feature the Cat[R] C6.4 engine with ACERT[TM] Technology for fuel-efficient operation and emissions compliance. Cat says 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. Cat says the excavators have about 7% more engine power and increased hydraulic pressure for increased breakout force, greater lift force and increased drawbar pull. www.cat.com.