Compact Equipment

JAN 2019

Compact Equipment is a magazine dedicated to equipment owners and operators of small, nimble, tool-carrying construction, landscape and ag equipment — such as skid steers, mini excavators, compact tractors, generators compressors and beyond.

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32 Compact Equipment JANUARY 2019 D emolishing rock or concrete is noisy, dirty work. It is a brute-force labor even when a compact piece of machinery is doing most of it. Consider the dy- namics: A breaker piston fitted at one end with a high-tensile steel bit hammers into a targeted surface, bat- tering it at a rate of hundreds of blows a minute. The fine- ly engineered breaker or hammer attachments effectively harness the percussive violence — employ it, in a word, as a destructive tool. While breaker/hammer attachments for skid steers/compact track loaders and mini excavators vary somewhat from manufacturer to manufacturer, they all share some common characteristics. To wit: They Punch Hard and Fast Breaker blows on compact machines are delivered any- where from 150 to 1,500 times a minute depending upon the hydraulic gallons-per-minute (gpm) flow rate of a car- rier. While all that force is concentrated on the point of a bit, some of it is propelled backward. The series of skid steer- sized breakers manufactured by Epiroc (until January of last year, the name was Atlas Copco) tries to harness the rear- ward thrust using what it calls its Energy Recovery System. Rich Elliott, Epiroc product manager, likens the recovery system to bouncing a hammer off an anvil. "That's almost exactly what we do. We capture the energy and recycle it How Breaker Attachments Hit Hard and Still Last a Long Time By Giles Lambertson

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