Breakers are a flexible and crucial attachment used for a wide variety of jobs, including tunneling, trenching, foundation removal, dredging, bridge demolition, quarry excavation, mining and more. To meet growing demand in North America, Komatsu is expanding its product line of hydraulic breakers. Designed and tested for compatibility with Komatsu excavators from the PC78 up to the PC490, the high-percussion efficiency and unique variable energy technology of these breakers are built to provide high production in multiple applications.
To protect the breaker, carrier and operator, Komatsu built in several features and benefits. The breakers have an accumulator that eliminates hydraulic pump cavitation to prevent flow surges back to the carrier hydraulic tank. By recycling high-pressure oil internally, this allows more energy with a lower flow, to reduce hydraulic pressure spikes and protect the carrier's hydraulic system.
Easy to maintain with only two moving parts, the JTHB-G line utilizes a hybrid design of hydraulic flow and pressure along with a nitrogen-filled chamber that provides striking energy. The patented tie-rod design is engineered for durability in tough rock and concrete applications.
Adding to longevity and durability, blank firing protection is standard and includes a hydraulic cushion at the base of the cylinder, to reduce metal-to-metal contact. Larger models feature special key slot dampers that help reduce vibration to the excavator, adding to operator comfort.
The simple design of the JTHB-G hydraulic breakers translates to reduced maintenance and fewer parts to buy, to help lower equipment-running costs. A one-year warranty comes with all G-series breakers.