Mid-Range Excavators Continue to Top Themselves

摘要

Building on in-place technology, manufacturers of mid-range excavators continue to refine the product, knowing that users want a machine in this size class that will yield excellent efficiency and productivity in a fairly wide range of applications. At the heart of the refinements is the hydraulic system. Just when you think that hydraulics are as efficient as they can get, manufacturers come up with new ways to make them even more so. Slight increases in hydraulic power and flow, reconfigured pump arrangements, plus upgrades in on-board electronic control systems add up to providing the right amount of power for the job.