The rock breaker boom system from McQuaid Engineering

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Rock breaking equipment which utilize a rotor carrying pivoted hammers thereon wherein the axes of the pivots for the hammers are offset from and inclined to the axis of the rotor. The hammer pivots are inclined to the plane at right angles to the axis of the rotor at an angle of 45 degrees and this construction provides a nested assembly of hammers and also the possibility of the hammer striking path lying outside the physical boundaries of the rotor and drive assembly.