All SDS hammer drill bits are created equally...right?! WRONG!
It is a misconception that the cheapest fixing product or drill bit will do the job just as good as the most expensive. They are all made in the same factory and they are just stamped with different manufacturers logo's on the box.
This is simply not true!
There's a range of different standards, schemes and procedures in place for different fixing types to ensure quality is not compromised during the manufacturing process of these products. In this post, we are going to look at one in particular, the PGM Label.
What does it stand for?
The Prüfgemeinschaft Mauerbohrer label (or, PGM® for short), is a German certification mark found on masonry and SDS drill bits around the world.
OK, that's great..But what does that mean for me?
What it really means is that when a drill bit has the PGM stamp of certification, the drill bit has been manufactured and tested to a standard that will help to ensure that it fully serves it's purpose - to create a perfect hole that will guarantee that an anchor/fixing will hold reliably.
The Prüfgemeinschaft Mauerbohrer e. V. certification board sets out strict guidelines that drill bits and manufacturers must adhere and comply to receive the stamp of certification.
This ensure that the drill bit geometry is correct to form a perfect hole for fixing. When using a non-PGM certified drill bit, the hole may not be perfect and may be irregular in shape and size, resulting in the fixing that is used in the hole, failing at some point (even if it seems like the fixing fits).
All testing institutes and anchor fixing manufacturers use PGM certified bits during the fixing development and the property assessment stage. Therefore, anchor fixing manufacturers can only offer a guarantee on the fixing properties, if you use a PGM certified drill bit too!
So what does this stamp look like?
The PGM certificate stamp can be found only on PGM certified hammer drill bits or masonry drill bits. The PGM mark is also found along with the name or trademark of the manufacturer and/or with a manufacturer's code (a two digit number or letter combination). This information is typically found on the packaging and drill bit itself and would look something like this:
A certification mark without the manufacturer's name or combination of digits or letters, is not genuine.
What about CE marking?
A CE mark means that a product fits the scope of a particular European Regulation or Directive. Drill bits are not installed into a building like anchors, nor are they a type of machine used on a construction site; therefore, they are excluded from any European Regulations and Directives (1).
What should I do?
To ensure that the anchor fixings you use will 'do exactly what it says on the tin', you should ensure that you only purchase PGM certified dill bits.
Techniko always supply the Addax premium PGM stamped SDS Plus hammer drill bits as standard.
Contact us for prices and availability of the size(s) that you require!
0191 489 4484
1. http://en.pgm-online.org/. Last accessed at 15.57 on 12/06/2018