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The HB 7000 hydraulic breaker attachment from Atlas Copco Construction Tools boasts a service weight of more than 7 tons, making it ideal for primary and secondary quarry breaking, demolition, tunneling, trenching and foundation work. Accepting a maximum hydraulic flow of 119 gallons per minute at 2,610 psi of pressure, the HB 7000 delivers an impact rate of up to 450 bpm. This offers maximum productivity in the most extreme breaking conditions.The HB 7000 comes standard with AutoControl, a monitoring system that allows the breaker to adapt its frequency and power output to match operating conditions. It begins by firing the first stroke at half power to create a pilot notch that will center the working tool and prevent unnecessary slippage. It then adjusts the power output to match the density of the specified material to be broken.