Equipment World

August 2013

Equipment World Digital Magazine

Issue link:

Contents of this Issue


Page 14 of 73

machine matters | by Richard Ries WHEN IS BIGGER BETTER? The performance advantages of 15-foot backhoes over smaller diggers are narrowing but have not disappeared T here's a reason 14-foot backhoes comprise the bulk of backhoe sales. That size is wellsuited to most of the tasks that backhoes perform. And as OEMs find ways to further improve the performance of 14-foot machines, the advantages of bigger diggers become less obvious. Andy Capps, Volvo backhoe product manager for North America, says advances in hydraulics and electronics have been great equalizers. "Flow-sharing valves, variable-displacement piston pumps, and load- sensing electronics have enabled improvements so that the higher horsepower of larger machines is no longer critical to overall performance." JCB's six new 3CX Super and 4CX Super models illustrate the similarities among machines of various sizes. Hydraulic flow (44 gpm) and relief valve pressure (3,650 psi) are the same for all of the models whether they're in the 14-, 15-, or 17-foot class. While there are differences in digging and breakout forces, lift capacity is the same for all models except the 3CX Super 14-foot. | August 2013 15

Articles in this issue

Links on this page

Archives of this issue

view archives of Equipment World - August 2013