Hydraulic Hammer Breaker

The CONSTMACH Hydraulic Hammer Breaker is a boom-mounted hydraulic rock breaker used at the feed point of a crushing plant. It is not a crusher in its own right; rather, it is a supporting component installed over the primary crusher hopper, bunker or grizzly to break oversize blocks before they reach the crushing chamber. Its purpose is to deal with the largest pieces in the run-of-quarry feed, breaking them into sizes the primary crusher can accept so that material flow into the plant is kept continuous.

The breaker works on the percussion principle. A hydraulic power unit drives a piston that strikes the breaker tool at high frequency, and the tool transmits this energy into the rock to fracture it. The breaker is carried on a boom (a pedestal or stationary boom arrangement) that positions it over the working area of the bunker, with a 360-degree working angle so the operator can reach oversize material wherever it lands without repositioning the plant. In practice, when a block too large for the crusher arrives at the hopper, the operator brings the tool down onto it and activates the hammer, fracturing the piece into crusher-acceptable sizes. This prevents the oversize from bridging the feed opening or jamming the crusher throat, which would otherwise stop the line and require manual clearing.

The breaker is operated by remote control. CONSTMACH provides both radio remote control and manual valve control, so the operator can stand clear of the bunker and break material from a safe vantage point, or use direct valve control where site conditions call for it. Because the breaker is fixed at the feed station rather than mounted on a roaming excavator, it is permanently available at the point where blockages occur and does not tie up other site machinery.

The CONSTMACH unit, identified as the CHB-400, has an operating weight of 350 kg and a tool diameter of 68 mm. It is driven by an 18.5 kW electric motor and operates across a working pressure range of 100-150 bar with a flow rate of 50-80 litres. The boom provides a maximum reach of 9,000 mm over the bunker area, with the full 360-degree working angle noted above. Structural parts are made from S355J2 steel, the hydraulic circuit is protected by OMT 25-micron filtration, and the hoses are R2 (Bezek) rated to handle the pressure cycles of percussion duty. CONSTMACH describes the hydraulic system as tuned to keep vibration and noise down while delivering consistent breaking power.

Within the crushing line the hydraulic hammer breaker integrates directly with the primary stage. It is positioned so that its working envelope covers the feed hopper or grizzly ahead of the primary jaw or impact crusher, acting as the first line of intervention against oversize. By intercepting blocks at the bunker rather than allowing them into the chamber, it reduces feed interruptions, makes crusher wear more predictable, and gives the operator closer control over the size of material entering the primary crusher. This makes the breaker a complementary item to a primary crushing and screening plant: it does not replace the crusher but keeps it fed with correctly sized material, supporting steady throughput across the line.