A new excavator-mounted hydraulic breaker that is significantly more
powerful, quieter and nearly three times more efficient than conventional
breakers, is making use of Ibex PowerSpring technology, which is
available in the UK from Lee Spring. HammerTech's new breaker represents
the first major application of PowerSpring, which, following a tensioning
cycle, is released to pull the drop-weight down on the chisel at a speed
of 4m/s.
Unlike conventional breakers, which have a strike frequency of up to
2,000 blows/min, the HammerTech tool strikes just 70 blows/min, and each
blow generates considerably more impact energy than a conventional tool
(up to 1,000 Joules). The result is a far more efficient breaking effort,
reduced noise and vibration for the operator and less wear on the chisel
edge.
PowerSpring is constructed from multiple rubber filaments encased in a
braided cover. Tested to more than five million cycles, these
tension/extension springs offer double the energy storage of normal steel
springs. A 32mm diameter PowerSpring, for example, delivers 3.5kN at 90%
elongation.
Lee Spring
HammerTech