(Slightly OT): Angle grinders.

Apr 04, 2009 7 Replies

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bigegg 17 years ago

I know this is not really "model" engineering, but I'm hoping someone can solve a recurring problem I have with 9" angle grinders:

The f***ing nut that holds the disk on keeps overtightening so I have to use an extender bar to unlock it. This usually ends up knacking the pins on the spanner, so I have to buy a replacement.

so: Can anybody recommend a (decent) supplier of pin spanner, or replacement nut that I can get a proper spanner on, or suggestions as to avoid the problem in the first place.

ta.

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Richard Edwards 17 years ago

Use a blotter paper on the inside of the disc? If no blotter then disc is spinning and tightening the nut. Basically increase the friction between disc and the drive plate.

Richard

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duttondock 17 years ago

Also tighten the nut *firmly* before use. This reduces the chance of it slipping & self-tightening in use. In my experience this self- tightening is only ever a problem when using cutting discs and then getting them jammed in the cut.

Tim

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mark 17 years ago

I suppose you know that the nut goes on one way for grinding disc's and the other way reversed for cutting disks

all the best.markj

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Julian 17 years ago

I wonder if a dab of copper slip or moly grease on the threads would help stop it binding up? FWIW I have a Chop saw, 9", 7" and 4 grinderettes and never suffer the problem you describe.

Julian.

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Mark Rand 17 years ago

If all the other suggestions fail, try thse:-

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I got a couple to replace waled out nuts on grinders that I inherited (dad didn't use a pin spanner). They seem to work.

Mark Rand RTFM

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bigegg 17 years ago

That looks like the sort of thing I'm looking for!

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bigegg 17 years ago

yep, that's usually how it happens!

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