The EPTA association (European Power Tool Association) has defined a procedure for the impact energy, which is mandatory since 01.01.2001 for all tool manufacturers who are members of the EPTA.

The impact energy is one of the most important indexes for tools with an electro-pneumatic impact system. In the past, manufacturers had different systems to calculate this value; therefore the impact energy was not comparable.

The impact energy must be published according to the 05/2009 procedure in all the sale documents, such as brochures, catalogues, documents with technical data, in hardcopy. Our clients can compare now the technical data of the KRESS impact energy to the data from our competitors.

The impact energy is measured in Joules (*). An impact energy value more elevated in the electro-pneumatic hammers provides as a result a greater advance in the drilling.

The new EPTA regulation to measure establishes the following:
- The minimum blockage measures to carry out tests and the quality.
- The length of the (bit and/or chisel) of the tool.
- Work temperature of the hammer.
- The set value of the advance pressure.
- The spot where the devices must be placed to carry out tests.
- The capacity of the operator when doing a professional and proper work with the hammer.

All these criteria are really close to the work’s reality.
(*) Joule: Energy with which 1 kg. hits when dropping from a height of 1 meter.