seized grinder nut

This is the outer nut on a brand new mini grinder i.e. there is no disk on the machine. I cannot shift the nut in the normal way (hammer, spanner), and am wondering whether I might get better access to the shaft if I dismantle the thing. Advice appreciated

Reply to
Stuart Noble
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Which way does the thread run? What do the instructions say about that?

You've locked the spindle, I take it?

I can't see why dismantling it would help. These things are designed to be undone without dismantling. Why not return it?

Reply to
GB

My immediate thought also. LH or RH thread?

Reply to
Chris Hogg

They'll refund but don't want it back, so I don't mind wasting a bit of time on it

Reply to
Stuart Noble

Usual grinder direction, clockwise afaik

Reply to
Stuart Noble
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Stuart, do you think you could consider either switching this pointless message off, or correcting the separator (it should be "--

Reply to
Huge

Have you looked at the thread? Have you locked the shaft? Are you using the appropriate tool?

Tim

Reply to
Tim+

Reply to
Stuart Noble

yes yes and yes

Reply to
Stuart Noble

In that case I think you need to post some pictures because I'm darned if I can work out why it won't undo.

Tim

Reply to
Tim+

Look, either read the instructions, or just try unbolting it in what you regard as the wrong direction. It won't do it any harm.

Reply to
GB

It's a bog standard grinder design but, as usual it's difficult to engage the lock and get any sort of pressure on the nut. It's obviously been over tightened at the factory

Reply to
Stuart Noble

I reckon you've got more of an idea than the suggestions so far. I don't see how else you'll lock the spindle.

NT

Reply to
tabbypurr

Have you tried fixing the machine to a heavy bench with a vice, clamp or whatever, getting a short well-fitting spanner pre-tensioned against the locking pin with a wooden lever (a metal one has too much elasticity) and tapping it quite hard with a big hammer when everything is stable and the forces are all in the right direction? The only thing after this (and before cutting the nut) is to try a cold chisel directly on the corner of the nut in the correct rotational direction an impulse tool or a socket with a very long lever. But the last one will probably break the locking pin or the casing of the grinder.

Reply to
Roger Hayter

There's a specialist web site called Grindr, and I'm sure someone there will be able to help with your nuts and shaft.

Cheers

Reply to
Clive Arthur

Reply to
Huge

Perhaps it was misthreaded from new (or the thread has galled in some way) - so it may never undo...

Reply to
John Rumm

Take it back and ask them to get it off if its new. Brian

Reply to
Brian Gaff

Have you tried an impact driver on it?

Reply to
Roger Mills

Sounds like something you need an angle grinder to resolve !! or a nut splitter. Anything more severe needs the shaft removing so you don't damage the gears.

Reply to
nospam

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