angle grinder discs

joea99 · Jul 2, 2022

It's welding related, cause, well, grinder.

Anyway ordered a PFERD 4 1/2 threaded arbor disc to try out. Since I have never used either before, 2 Birds one disc. Threads on nicely and will give it a test soon, but, is that it? Just over hand tight an neither arbor adapter plate involved? Seems to be the idea as the disk has a hex on one side, presumably for a wrench.

WranglerX · Jul 2, 2022

Never had to use a wrench (other than 2 pin wrench for cutoff wheels) almost ever thing I use was always put on hand tight and usually can grip it enough it will loosen, BUT if you have to use a wrench to loosen you must....

5030 · Jul 2, 2022

I will be waiting for a review. The Pferd stuff is pretty expensive compared to most grinding discs. They would really have to out perform the conventional stuff to be worthwhile for me. Buy my grinding discs by the carton and cut off wheels as well.

ArlyA · Jul 2, 2022

Guys in the field put disks on and off without tools, in general anyway. At my work, one 5" grinder had a brake and I HATED it since the wheels I put on it kept coming off. (braking would unscrew the nut) I bought a new one for myself a few months ago and got one without a &^%#@ brake!

joea99 · Jul 6, 2022

5030 said:
I will be waiting for a review. The Pferd stuff is pretty expensive compared to most grinding discs. They would really have to out perform the conventional stuff to be worthwhile for me. Buy my grinding discs by the carton and cut off wheels as well.

So far all I can say is it removes steel better/faster than anything I ever tried before. A light touch works fine.

Cannot attest to how long it will wear, but from grinding down some "over welds" it seems to have held up pretty well. With other discs I could see wear at this point.

MinnesotaEric · Jul 6, 2022

joea99 said:
It's welding related, cause, well, grinder.

Anyway ordered a PFERD 4 1/2 threaded arbor disc to try out. Since I have never used either before, 2 Birds one disc. Threads on nicely and will give it a test soon, but, is that it? Just over hand tight an neither arbor adapter plate involved? Seems to be the idea as the disk has a hex on one side, presumably for a wrench.

I never use tools to tighten up disks, I just use the disk itself to tighten and loosen the arbor.

5030 · Jul 6, 2022

joea99 said:
So far all I can say is it removes steel better/faster than anything I ever tried before. A light touch works fine.

Cannot attest to how long it will wear, but from grinding down some "over welds" it seems to have held up pretty well. With other discs I could see wear at this point.

Lets have a long term viability test compared to say an average bonded grinding disc. I go through a lot of them. Would be nice to decrease the amount but it also has to be viable cost wise.

I buy the vitrified discs by the case all the time. I've kind of went with the HF 4.5" thin kerf cut off discs. Hard to beat a dozen for 6 bucks and they work pretty well too.

joea99 · Jul 7, 2022

5030 said:
Lets have a long term viability test compared to say an average bonded grinding disc. I go through a lot of them. Would be nice to decrease the amount but it also has to be viable cost wise.

I buy the vitrified discs by the case all the time. I've kind of went with the HF 4.5" thin kerf cut off discs. Hard to beat a dozen for 6 bucks and they work pretty well too.

If you want me to run that test, might be a long wait. I don't do enough metal grinding to be able to run a "viable" test.

I got this one, for my own evaluation.

PFERD 4-1/2" CC-Grind -Solid 5/8-11 Thread - SG for Steel (61220): Amazon.com: Industrial & Scientific

5030 · Jul 7, 2022

I just want to know the useful life compared to a standard bonded disk because the per disk cost for the Pferd is pretty steep so it has to outlast at least a couple bonded conventional discs to be viable. If they are the Holy Grail of grinding discs,. I'll buy a few as I said, I go through conventional discs like water, buy them in case quantity.