Hi everyone!
I got a SDS-plus drill bit today, it requires a bit of an explanation.
I own a pre 2004/2005 corded Hilti TE 2-M (rotary hammer). It’s a fairly special machine with features hard to find these days (in one machine, rated for professional use). It can hammer drill at full power, hammer drill at reduced power, and it can drill without hammering at two top speeds, one is around 900 the other around 2000. It’s kinda a 4-gear rotary hammer/drill.
The hammer drilling at reduced power/energy (not speed!) is great to prolong the life of various SDS-plus dust extraction drill bits when the work is more of a marathon and not so much a sprint.
Problem is, servicing this machine get’s harder & pricier - so I switched to a different machine for all applications where I don’t absolutely need the TE 2-M.
The other reason for using hammer drilling at reduced power/energy is to not destroy the chambers/walls of hollow brick type materials. I often opt for the percussion drill then instead. But then it’s juggling 2, sometimes 3 machines. Not a problem per se, but I was happy to see a new SDS-plus drill bit being introduced that will reduce the hammering power/energy of just any rotary hammer.
I got it from Foerch, a German industrial/trade supplier. But I fairly quickly found out that these drill bits are made by French manufacturer Diager.
Link to Foerch:
https://en.foerch.com/product/fe9d23f4-62ff-4a07-9164-f2dcee0990b1/micro-percussion-drill-sds-plus
Link to Diager:
https://www.diager.com/en/produit/hammer-drill-sds-plus-wallster-special-hollow-materials/
I don’t know if either Foerch or Diager were at WOC, if they were, the will have probably shown these there, as it’s a fairly new product.
How it works: Shorter length for the SDS-plus ‘connecting/ locking channels‘. Second picture is a comparison between regular length and shortened length. Supposedly use of these is not ging to harm any SDS-plus rotary hammer.
It’s a carbide tip/ 2 edge design, so it will also drill (cut) without hammering action.
The idea behind this drill bit is to especially help window installer’s to set chemical anchors in hollow brick while being able to use one machine (rotary hammer) to do it all.
Available in 100/160, 200/260 & 400/460mm lengths. Available diameters go from 5 to 16mm depending on length.
I have other uses/ideas for it, but that is for a different day.
Just wanted to show it here and let you guys know, that these ‘problem solving’ SDS-plus drill bits are now out there and available.
Kind regards,
Olli
