Allied

Staff | September 28, 2010

Allied Hammerhead II Model HB 550 The Allied Hammerhead II Model HB 550 is a concrete-demolition tool designed to “rubblize” flat work up to 12 inches thick. The attachment, which weighs 1,130 pounds and will operate either vertically or horizontally, uses an internal hydraulic-cylinder-and-valve system to compress a heavy spring that “loads” the tool to a pressure of 3,350 psi. This mechanism causes the 4-inch impact bar, weighing 388 pounds, to fire at the concrete with a force equivalent to a tool with a 4,000-foot pound energy-class rating. The new Hammerhead can be mounted on skid-steer loaders (5,000 to 9,000 pounds), mini-excavators (7,000 to 15,000 pounds) and backhoe-loaders (9,000 to 16,500 pounds), and requires a hydraulic flow between 8 and 20 gpm at a pressure of 1,700 to 3,500 psi. According to Allied, the new tool operates at a rate between 25 and 40 blows per minute and demolishes concrete flatwork up to 10 times faster that more conventional methods.

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