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The new HB 4200 features Krupp percussion technology and a four-tonservice weight, making it suitable for demolition, tunneling, trenching, foundation work and primary and secondary quarry breaking. Accepting a maximum hydraulic flow of 84 gallons per minute at 2,610 psi of pressure, it delivers an impact rate of up to 530 blows per minute. It comes standard with AutoControl, a monitoring system that allows the hammer to adapt frequency and power output for operating conditions.