Sharpening Partner S650 stumpgrinder blade

[nh206]

Hi,

 

I recently borrowed this little stumpgrinder from a friend. I believe it is essentially a cut-off saw mounted on a trolley with a stumpgrinder disk. It is clear that the disk is not particularly sharp (producing more sawdust than chips) and we were wondering if anyone might have any advice on how to sharpen it? Obviously the teeth aren't removable and the shape of it prevents us getting it onto a grinder.

 

Ideally we're keen to do it ourselves but would also be interested if there any services out there that might be able to do this for us? Finding a replacement disk seems next to impossible, although if anyone can suggest a way that might be helpful.

 

It's worth pointing out that neither of us are arb professionals but have a bit of experience in tree work and general machine maintenance

 

Thanks, Nick

 

[openspaceman]

Hi,

 

I recently borrowed this little stumpgrinder from a friend. I believe it is essentially a cut-off saw mounted on a trolley with a stumpgrinder disk. It is clear that the disk is not particularly sharp (producing more sawdust than chips) and we were wondering if anyone might have any advice on how to sharpen it? Obviously the teeth aren't removable and the shape of it prevents us getting it onto a grinder.

 

Ideally we're keen to do it ourselves but would also be interested if there any services out there that might be able to do this for us? Finding a replacement disk seems next to impossible, although if anyone can suggest a way that might be helpful.

 

It's worth pointing out that neither of us are arb professionals but have a bit of experience in tree work and general machine maintenance

 

Thanks, Nick

 

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They actually don't look that blunt for a stump grinder but with so little power and weight I imagine they have to be kept tip top for it to be effective.

 

If the wheel is unobtainable as a spare I'd have it off, measure it and get a silhouette on a piece of card in the hope that when worn it could be copied.

 

You can sharpen in situ with an angle grinder, relieve the backing steel with a normal disc and then sharpen the TCT with a diamond disc, don't sharpen the front and maintain the angles.

[Stumpgo]

I have a Husky version of the same machine. Enquired a few years back re a spare cutter wheel; they were still available then at around £200 + vat.

However got one off ebay for hugely less money.

 

Sharpening them with a 6 inch resin based diamond wheel, on a standard Machine Mart 8 inch bench grinder is straightforward. And they do need to be sharp to be any good.

 

Overall, quite a handy bit of kit for occasional use on otherwise hard to access small stuff. Especially as it doubles as a disc cutter. We don't bother with the trolley.

[marne]

I know these too and yes for the given hp, these teeth are blunt.

My advice is to only sharpen from below and maybe very little on the front. Don't grind back any steel!

This way you ensure, that these pointless expensive wheels can be retipped.

[amfell]

part number 506 22 99-12 current price £300.55+Vat