Unleashing the beast — the Zaxis 850LC-3
Operating the Hitachi Zaxis 850LC-3 for the first time can be an eye-opening experience. Many wonder how Hitachi managed to package so many of the larger EX1200’s engineering characteristics into an 850 body!
The 850LC-3 is suited for quarries, demolition, and heavy construction jobs. The pairing of Isuzu’s Tier-3-certified 532-net-peak-hp (397 kW) AH-6WG1XYSA-03 engine with Hitachi’s HIOS III hydraulic system has increased engine output as well as bucket and arm digging forces. Operators can tailor machine performance to the job by selecting one of three power modes — Economy (E), Power (P), or High Power (HP). HP ensures efficient arm roll-in during deep excavation.
Weighing 185,120 pounds (84,152 kg), the Zaxis 850LC-3 comes standard with a 14-ft. 5-in. (4.4 m) arm, a 29,321-lb. (13,300 kg) counterweight, and 36-in. (900 mm) double grouser shoes. Additional arm lengths that can be ordered are 12-ft. 1-in. (3.7 m) and 17-ft. 9-in. (5.4 m). Also available are a 23-ft. 4-in. (7.1) mass excavating boom with a 9-ft. 8-in. (2.95 m) arm and a 32-ft. 10-in. (10 m) boom. Thirty-inch (750 mm) and 40-in. (1020 mm) shoes are available as well.
The Hitachi HIOS III hydraulic system uses arm and bucket regenerative systems to boost front attachment speed. A boom mode switch, when turned on, reduces vibration and impact shock-loads due to less lifting or pulling of the body, increasing comfort.
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