Not sure where to put this - Erbauer Grinding discs

[MFCGMFC]

hey all

was using a site grinder the other day with Erbauer metal grinding discs

STAY AWAY from these blades!!

5 blades an hour i went through to cut 6 metal pipes one blade shattered and i got most of the broken shards in the face

i'm still picking bits out lips right now! the blades just disintegrated when in use i will never ever ever use these blades again

never had any problems with any other blades in this machine but i suppose thats what i get from buying cheap

[ultimatehandyman]

Thanks for the warning.

Abraisive discs are something that can be deadly and can cause life changing accidents, so it's best to always buy good quality and always wear the correct PPE

[thescruff]

You should also check the design speed and direction of rotation.

[big-all]

what disks where they??[part no]

[MFCGMFC]

not to sure mucker i'll check soon and post up :)

[sparkydude]

Were you using GRINDING discs to CUT , IN which case they are very likeley to shatter as they are not designed for that task, the same goes for using a cutting blade to grind.

Another thing that lots of people do not realise is that grinder discs, cutting and grinding both have a shelf life and as such have the use before date stamped on the metal ring normally , if you use them after this date then any accidents caused by disintegratin blades cannot be blamed on the makers.



Nick

[MFCGMFC]

sorry it was metal cutting discs i was using, sell by date is fine

they were purchased not so long ago

[Hitch]

Not noticed this post before, bit old now.

5 cutting discs an hour isnt bad, but 5 discs is bad for 6 pipes. A decent 4.5/5" disc should 4-5 bits of scaffold sized pipe. A 9", you ought to be getting 10-12 cuts a disc.

I often see people using cutting discs and pushing far too hard, then wonder why they dont last. You barely need any pressure at all, or the metal wears the bonding in disc instead of cutting. The other problem i often see, is the disc getting pinched in a cut, thats guaranteed to kill it if it bites. Just like a saw jamming in a bit of wood. Especially important if you are using the ultra thin ones.
I have used some silverline discs before, although not all that good, none shattered on me.

Damp is another thing that damages discs, if theyve got wet, chuck them away. Also check the date, its often stamped on the reinforcing ring in the centre.

If you want decent discs, get Klingspor, Reca, Flexovit....