Komatsu has announced a new range of Komatsu-branded JMHB series hydraulic breakers matched to fit its own excavator range and designed to work with machines from less than 1 t to quarry/mine class machines of over 85 t. The range of new Komatsu breakers, which have operating weights from 65 kg to 5,589 kg, covers mini excavators (0.7-7.5 t), medium sized excavators (7.5-20 t) and large excavators (20-90 t).The Komatsu Heavy Range of breakers are available as both a two-speed option as well as a fully variable speed version. The fully variable speed versions automatically change their frequency to different conditions or material hardness therefore greatly increasing productivity across varying applications.According to Charles Wheeldon, Komatsu’s General Manager, Construction & Utility Marketing, the company’s new breaker range brings industry-leading rock breaking technology to its entire construction excavator range. “For many years, Komatsu has been recognised as offering the industry’s best range of excavators, in terms of performance, productivity, reliability, durability and cost of ownership,” he said.“Now we are delighted to be able to offer a matched line of breakers, designed to work with our own excavator line, and backed by the full Komatsu support network across Australia, New Zealand and New Caledonia.” Wheeldon said the new Komatsu breaker range offered several unique advantages, including the variable frequency and energy system on selected models for higher productivity and lower maintenance costs.“Our design engineers understand that percussion efficiency is the key – not heavier breaker weight, which simply results in increased carrier fuel consumption. Our variable speed breaker design provides greater hydraulic efficiency, further enhanced with our energy recovery and regulation systems. Komatsu breakers offer the industry’s highest percussion efficiency, with their lower input power requirements resulting in better fuel efficiency. And higher output power means greater productivity in fractured and semi-fractured rock,” he said.“As well, all Komatsu breakers incorporate a back pressure-tolerant design, blank firing protection, over-flow protection and a fully enclosed nitrogen filled accumulator. Combined with the low operating costs benefits of our excavator range, this means a Komatsu combined excavator/breaker package offers major benefits, including better productivity and performance, reduced downtime, lower cost per hour, and the industry’s leading service and support network,” he said.Komatsu breakers are available with a range of tools for different applications, including chisel, moil point, pyramid point and blunt tool.