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Mini Lathe Roller Bearings.

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Stilldrillin:
I decided it was time I fitted taper roller bearings to my Mini Lathe......

I had read several stories of needing another lathe to machine spacers, but gained confidence reading the later part of David, Twinsquirrel`s posting.  :clap:

http://madmodder.net/index.php?topic=899.15

NO Problem!

No special tools needed....... Anyone who has changed a car wheel bearing need have no worries!  :thumbup:




.....BUT!

Why does the bearing spacer/ tumbler gear/ locknut assembly wiggle like a swashplate???  :bugeye:




I had noticed this occasionally, over the years. But it was bought new, so must be ok (& out of sight under the cover)......

The spacer bore has 2mm clearance on the spindle.

The 2 locknuts are threaded very wobbly to their faces!!!!

What`s all that about?  :bang:

And now what to do?  ::)

Turn up a new larger dia spacer, a sliding fit onto the spindle.





This correctly aligned the tumbler gear, for the first time in it`s life.

But not the nuts.......





Soooo....... I screwed a piece of bronze to a tight fit in the nut`s threads.




This allowed me to face up square with the thread.

Had to remove approx .035" per side from touch on, to leaving a witness.....




Super job...... Now!  :thumbup:



Still rather puzzled over the apparent April Fool bodge........

WHAT was all that about?  :scratch: :scratch:

More to follow, when I`ve taken some more pics.......

David D

Darren:
Some nice work as usual again there Stew  :thumbup:

Now I'll have to take another look at my nuts  :jaw:

sbwhart:

--- Quote from: Darren on June 04, 2009, 04:45:54 AM ---Some nice work as usual again there Stew  :thumbup:

Now I'll have to take another look at my nuts  :jaw:

--- End quote ---

Stew  :scratch:  I'm Stew this thread was started by David  :doh:   :lol: :lol: :lol:

David

Nice work getting thing correct I recon what was wrong was a bit of good old Chinese quility control, I've found odd bits of things wrong similar to what you've found they probibly didn't clean the chuck out when then threaded those nuts so a bit of shonet threw the work out of kilter.

Stew

Darren:
 :doh:

Done it again, sorry chaps, keep mixing you two up.... :lol:

Still a good job done though David  :thumbup:

 :ddb: :ddb: :ddb:

Stilldrillin:
A`m confussted agin.......  ::)



DAVID D     :D

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