Stanley breaker offers top power-to-weight ratio
By Patrick Hill17 June 2008
The Cyclone drop hammers, says Stanley Hydraulic Tools in the US, offer up to five times better power-to-weight ratios and lower purchase and operating costs than other hydraulic hammers. The three-model product line, recently acquired from another company and under expansion by Stanley, fits skid steer loaders, excavators and backhoes.
Simplicity, said the company, is the essence of the Cyclone design. Its concept is a hydraulically-driven sprocket and chain mechanism to lift the hammer, which falls under gravity to generate impact force.
Cyclone units have no upper or lower bushings, no accumulators, and no wear plates. They operate while resting on the concrete flat-work, so impact loads are transmitted directly to the concrete, and so reducing shock to boom and carrier.
The 340 kg, 300 mm wide DH1500 model delivers 2034 Nm blows at a maximum of 32 per minute and can break up 76 to 150 mm thick concrete at a rate of approximately 90 m2/hr. The 699 kg, 460 wide DH3500 model delivers 4746 Nm of energy at 45 blows per minute. Its performance is 230 m2/hr. A third model, the 3000 kg DH9000, which will be released in the "near future", will deliver 12200 Nm of energy and 30 blows per minute.