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Mini-Lathe woes

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Darren:

--- Quote from: Twinsquirrel on March 14, 2009, 06:55:39 PM ---


Darren,

The bush to be machined is the one between the pre-load nut and the inner-race is that right? Did the taper bearings make a big difference?

A very quick search gave me this cup and cone set http://simplybearings.co.uk/shop/p47169/30206+Metric+Taper+Roller+Bearing+30x62x17.3mm/product_info.html Not sure whether this is the right one so I will go into my local place on monday and have a chat.

Thanks again

David


--- End quote ---

Yes at the back of the headstock. The taper bearings are sligtly thicker than the standards, that's why you need to skim this bush slightly. It's not much.

Those will be the right bearings, those numbers I gave you are an absolute in the bearing world.

Did the tapers make any diff, couldn't tell you really, my lathe was cutting badly, it always did from new. I put the tapers to try to cure it.

But it wasn't until recently till Bogs got his hands on the lathe was it finally cured. And cured good an' proper too.

Darren:
How did you get on with this David.... :ddb:

Twinsquirrel:
Hi Darren

recieved the bearings and PLASTIC gears today, I couldn't get hold of the metal versions but I'm going to keep an eye open for them.

I will do a post later when I try to fit it all back together, I'm "in the field" at the moment.

Cheers

David

Twinsquirrel:
Well this all turned out to be quite simple really, the bearing outer cones were easy to press into the headstock casting..



The inner race was pretty easy too.... the second time around as I forgot the bearing cover the first time :hammer:



once the gear, spacers and the other bearing was fitted, the spacer on the outside was obviously (as you guys predicted) about 4mm too long.



But after some careful fettling without the preload, the key fitted perfectly.



All reassembled and run for a few minutes on at a lowish speed and the re-adjusted I'm amazed at the results, a much smoother cut with no chatter on facing cuts which is where I now realise I was having problems before.

It amazing, I've ended up with a much better machine thanks to you guys.  I only wish I could have got hold of those metal gears but hey, you cant have everything can you  ::)

Thanks to all those who offered help and advice

You guys are the dogs danglies.

David

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