The European Technical Approvals for anchors and their installation instructions demand the use of suitable drill bits. But how can such drill bits been identified under site conditions? For drill bits with PGM mark the installer can rely on their suitability for safe anchor fixings. This is nor the case for drill bits without mark. Also the German approval body for anchors Deutsches Institut für Bautechnik (DIBt) recommends in its guideline for anchor installers the use of PGM marked drill bits.
SDS hammer drill bits and percussion drill bits with PGM certification mark are suitable for the safe installation of anchor fixings in concrete and masonry. Their tolerances are tailored to metal anchors, bonded anchors and plastic anchors with European Technical Approval (ETA). This is not the case for drill bits without PGM mark. Their use can influence the safety and reliability of anchor fixings. If such drill bits are used, the liability risk for unsafe anchor fixings stays with the installer. Also distributors take a higher liability risk, when they sell drill bits without PGM certification mark. Both – end users and distributors are on the safe side with PGM marked drill bits.
Since 2009, more than 56000 faked drill bits and packaging have been seized during raid actions. The raids have been conducted on behalf of PGM by the Chinese authority Administration for Industry and Commerce (AIC). The seized drill bits have been destroyed and the counterfeiters have been penalized.
PGM mark is protected nearly world-wide as International Trade Mark or via registrations at the national patent and trade mark offices. Trade mark infringements are traced in cooperation with local law firms and authorities.
PGM mark has established world-wide as mark for safety and quality of hanmer drill bits (SDS drill bits) and rotary / percussion drill bits. PGM mark is granted to manufacturers only, not to distributors or private labels.
PGM certified hammer drill bits (e. g. SDSplus, SDSmax) and masonry drill bits (rotary or percussion drill bits with cylindrical shank) are marked with PGM mar in addition with the name or trademark of the manufacturer and/or with a manufacturer code (two digit number or letter combination) as follows:
A marking only with the Inspection mark, without manufacturer name or combination of digits or letters, are not legal. If you are not sure, if a drill bit is marked correctly, please contact firstname.lastname@example.org.
The strength and reliability of anchor fixings depends largely from the geometry of the drilling hole. Modern anchors can only perform excellent values in exact drilling holes.
For that reason the approvals for anchors contain strong requirements for the used masonry drills.
The inspection mark of the Prüfgemeinschaft Mauerbohrer (PGM®) is the proof for the suitability of the masonry drill bits. This mark is granted only to manufacturers under the following conditions:
- state of the art manufacturing under use of a quality insurance system
- yearly skip-lot inspections of the produced drill bits by independent institutes
- state of the art social and environmental standards.
Please find here a list of all manufacturers which are allowed to use the PGM certification mark.