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Angle Grinder Discs

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Flyingpig1975
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Angle Grinder Discs

Post by Flyingpig1975 »

Hey all,

So really obvious question here but i want to sense check my thoughts. i am looking at an accident that happened with an angle grinder where the disc exploded. It was a 230x1.9mm discs in a medium sized angle grinder. On looking at the grinder i see that it says 6500/min RPM on the plate and the disc used says max 6650 rpm. What are your thoughts on the disc choice?

thank you as always for your help.
../.
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Re: Angle Grinder Discs

Post by Waterbaby »

Bump ./thumbsup..

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Re: Angle Grinder Discs

Post by Andyblue »

That looks like a thin but quite large diameter disc. Presumably for metal cutting. On the face of it, the disc seems suited to the grinder, not sure how much rpm excess beyond the grinder’s speed would be needed.
I’m sure you have, I might explore what it was used for and how it was being used as much as the compatibility
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Ian Rienewerf
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Re: Angle Grinder Discs

Post by Ian Rienewerf »

The speed ratings are Ok for the disc to be used on the grinder. The machine speed needs be equal or lower than the disc rating.
As mentioned above - the 1.9mm disc will be a cutting disc and may have been used with a side load during grinding, or the workpiece may have moved and the disc has snagged.

The choice of disc is good for cutting. The actual use of the disc is unknown.
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Flyingpig1975
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Re: Angle Grinder Discs

Post by Flyingpig1975 »

Thanks guys, I've looked at it and root cause is no RAM's. If there had have been in my view the tool choice would have been different and not an angle grinder therefor the load on the disc not causing the breakage.
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Re: Angle Grinder Discs

Post by Andyblue »

Flyingpig1975 wrote: Mon Jun 20, 2022 1:36 pm Thanks guys, I've looked at it and root cause is no RAM's. If there had have been in my view the tool choice would have been different and not an angle grinder therefor the load on the disc not causing the breakage.
Sounds like a good outcome all round - thanks for the update.
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Re: Angle Grinder Discs

Post by ScottD »

I think you have to look further than no RAMS as the root cause. Why were there no RAMS?
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