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Any idea why this lathe is chattering? Spindle bearings?

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John Rudd:

--- Quote from: philf ---
The normal arrangement of two taper rollers is fail-safe in that, as the spindle expands with the heat, the inner races move apart thus increasing clearance.

I agree the rear bearing shouldn't be a tight fit on the spindle.

Phil.

--- End quote ---

As Phil says.......
The inner races on both bearings should be a good fit without being too tight else you wont be able to set the bearing pre load correctly

bertie_bassett:

--- Quote from: loply on January 03, 2016, 12:14:43 PM ---Thanks for all the input guys, few more things to check.

I don't suppose somebody with a similar sized lathe could chuck up a 6 inch bar, put an indicator on the chuck body and see how much the chuck deflects by when pressing by hand on the end of the bar?

--- End quote ---

I can see what I get on my viceroy tomorrow if I get a chance, mine needs a lot off attention but does actually turn out fairly good work.

have also got nearly all the drawing for the 4.5 and 5'' lathes, might take some digging to fine the headstock drawings but I'm sure they are there somewhere

loply:
Thanks mate, would really appreciate that.

rotorhead:
Hi loply,

I helped my son dismantle his Viceroy a long while ago, unfortunately I've forgotten its configuration, but I did download some original files from Denford, I'll include them for you.

If these are helpful I'll see what else I've got..

DavidA:
Loply,

Have you joined the Denford machine forum ?

If not, you should.  I just registered and there is a whole lot of stuff on all their machines. You could save yourself a lot of grief by going to the people who are using the same machine as you.

I can't think why I didn't do it sooner.

Dave.

p.s. check your PM.

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