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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Page 32 of 59

for the next blow, getting up to 25 percent more percussive performance. And all of our breakers have the system." Striker brand hydraulic breakers don't use this standard "accumulator" technique for redirecting force. "We have an enclosed system of nitrogen and use that to power our breaker," says David Nakamura of Toku America. "It's dual purpose. It helps accelerate the piston and, on the other end, cushions it when it comes back up so there is less reaction for the machine." Nakamura says Toku consciously chose not to em- ploy an accumulator. "We feel that it is a savings not to have one. You don't have to maintain it — the rub- ber bladder inside an accumulator has a certain life, a thousand hours or whatever, and then needs to be replaced. Not having an accumulator definitely is a maintenance cost-savings." The longevity of the nitrogen charge is a selling point also made by Ron Peters, product manager for Edge brand breaker attachments. "Under normal use, you just have to check the nitrogen charge once a year, and we have charg- es available when they are needed. If you use the breaker a lot, maybe check it twice a year, but otherwise it probably is good for a year." Breakers Must Be Durable They must be durable to contain the explosive force in each thrust of the piston. One of the ways breaker manu - facturers build in durability is by minimizing components. Epiroc calls its small hammer products "Solid Body break- ers," an allusion to the single casting construction method employed for the body of the breaker. The manufacturing process creates relatively slim breakers, which is an advan- tage for working in tight spaces. An Edge breaker has a mono-block design with two moving parts. The breaker's advanced hydraulic circuit provides increased flow to the valve and piston, giv- ing operators faster cycle times and increased tool pen- etration. Toku Striker breakers and Paladin Strike Force breakers also tout two moving parts — a control valve and piston. Ananth Parameswaran, vice president of marketing and product management at Paladin Attachments, explains why fewer parts are better. "Basic engineering reliability theory confirms that the lower the number of components or sub-systems, the less opportunity for failure and the higher opportunity for reliability. For breakers, this simply means that because there are fewer moving components, the hydraulic clearances can be maintained at a reason- able manufacturing level without compromising perfor- mance." They Are Quieter and Cleaner The quiet is relative, of course. "Noise is definitely a factor," acknowledges Nakamura. "We offer breakers that are in boxed housings to suppress noise. If a contractor is going to be working in a noise-sensitive area, he would order the boxed housing. Or he can get the housing later when he needs it to get a few less decibels at work." 33

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