Atlas Copco last week introduced three new heavy hydraulic breaker models with PowerAdapt and optimized power-to-weight ratio at Bauma 2010. The HB 2000 with its service weight of 2000 kg offers 10-percent more power than its predecessor, the HB 200. The new HB 3100 and HB 4700 with a service weight of 3100 and 4700 kg, respectively, deliver 5-percent and 13-percent more power than their predecessor models.
In doing so, Atlas Copco sticks to the principle of developing and building attachments offering an improved power-to-weight ratio. The same performance can be achieved with a smaller attachment and carrier unit. Investment and maintenance costs are reduced. More power also means a higher strain against which the attachments are protected by proven and new product features.
All three hydraulic breakers are equipped with the PowerAdapt system, which shuts down the breaker in case the oil pressure is too high.
“Thisis, for example, useful when the hydraulic breaker is used on different carrier units,” said Torsten Treger, product line manager medium and heavy breakers. “Hydraulic breakers can generally be hydraulically overloaded if the carrier’s oil pressure has the wrong setting. In order to ensure that our customers can make full use of the equipment in terms of efficiency and power, we have equipped the entire range of heavy-duty hydraulic breakers with PowerAdapt.”
With an improper carrier oil pressure setting, conventional pressure relief valves, as the ones frequently used in hydraulic breakers, continuously drain oil into the tank and therefore waste precious energy. This affects the efficiency and profitability of the equipment.
All features of Atlas Copco’s heavy-duty hydraulic breaker line are also found in the three new models: the VibroSilenced system to protect operators against noise and vibrations, AutoControl to adapt the blow frequency and impact energy to the rock hardness as well as the integrated automatic lubrication system ContiLube II. With StartSelect the operator can influence the starting and shutdown behavior of the hydraulic breaker. And with the optional DustProtector the hydraulic breaker is protected against dust and rock particles penetrating the lower breaker part.
In addition, Atlas Copco launched a new carrier-integrated breaker ventilation system for tunneling applications this week at Bauma. The ventilation system that delivers additional air is engineered for easy installation and to minimize the risk of extensive wear on hydraulic breakers.
Atlas Copco hydraulic breakers are suitable for tunnel heading, scaling, extension and demolition work. When working underground, abrasive dust in the air can enter the percussion chamber, the oil circuit between the attachment and the carrier can become contaminated, and rust can form on the piston from water sprinkling on the breaker. All these factors can cause considerable wear on the breaker.
To avoid these problems, an additional air source can be supplied by means of a carrier-integrated breaker ventilation. The system is easy to install by a simple hydraulic connection to the breaker installation of the carrier, while the electronic system of the carrier is not touched. The new breaker ventilation requires no separate ground space, and no extra person is needed for the air hose. It is synchronized with the hydraulic breaker and operates without emissions.
The breaker ventilation system is available for Atlas Copco breakers of the 1,000 to 4,200 kg class.
Atlas Copcois an industrial group that produces compressors, construction and mining equipment, power tools and assembly systems. Atlas Copco Construction Tools is headquartered in Stockholm, Sweden, and has production units in Europe, Africa and Asia.