September 9, 2011
Caterpillar says its new 374D hydraulic excavator, a replacement for its model 365C, combines added horsepower, stronger hydraulics, and greater operating weight to boost overall performance. Complementing these design basics are undercarriage improvements, a new range of buckets, operator-convenience features, safety enhancements, and serviceability improvements. The 374D weighs in at 156,819 pounds. Rated at 476 net horsepower, the Tier 3/Stage IIIA-compliant Cat C15 engine provides the 374D with 18 percent more power than its predecessor, the 365C. Cat ACERT Technology equips the C15 with advanced electronic control, precise fuel delivery, and refined air management to deliver clean combustion and optimum fuel efficiency. The machine’s implement hydraulic system features a 10-percent increase in flow and a 9-percent gain in main pressure. The added hydraulic power combines with larger digging arm and bucket cylinders to yield 17-percent higher digging arm forces and 12-percent higher bucket forces on machines with the standard (reach) boom and arm configuration. For units in the mass excavation configuration, digging arm forces are up by 17 percent and bucket forces by 5 percent, resulting in shorter cycle times and increased bucket fill factors.