JCB has renewed five models in its Hammermaster series of hydraulic breakers.
Three of the updated models are in the large breaker range, with the rest to the medium breaker line. The new models all incorporate features aimed at providing improved performance and efficiency, together with a high power to weight ratio for maximum efficiency.
The large breaker range includes seven models designed for use with machines ranging from 10t-75t operating weight. The three updated models - HM870Q, HM1270Q and HM1570Q - are designed to work with carrier machines from 10t–28t, offering an improved performance of up to 31% and increased hydraulic efficiency by up to 15%, JCB claims. A new Power Control Valve provides more adaptive performance from the breaker, varying blow frequency while maintaining impact energy to match the conditions. The heavy duty housing design results in a more robust breaker, while contributing to a reduction in noise levels of up to 5dB(A).
The breakers are designed to be easy to maintain and built to last, with a single piece cylinder, an Autogrease system and a dust wiper fitted as standard. The HM870Q offers an increase of performance from 17.4kW to 19kW, a reduction of 50kg weight to 800kg and a hydraulic efficiency gain of 56%. The HM1270Q achieves a 29% performance improvement, up from 19.8kW to 25.6kW, a reduction in weight from 1,250kg to 1,200kg and a 10.6% improvement in hydraulic efficiency, taking it to 64%. The HM1570Q features an increase in performance of 31%, reaching 29.5kW, a reduction of 100kg in weight to 1,500kg and an increase in hydraulic efficiency from 57% to 67%
The medium breaker range, designed to work with midi excavators, backhoe loaders and skid steer loaders, consists of four models covering carrier weights of 2t-12t. The HM166Q and HM266Q join the existing HM386Q and HM495Q, to provide higher performance and efficiency figures and a noise reduction of up to 10dB(A). Featuring a sealed accumulator, solid body and floating bottom bush, they deliver low maintenance, long service life and high performance, JCB says.