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Jim Schwitters
 
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Default Delta/Rockwell 11" lathe gears - find or make?

Steve,
I have this lathe and although mine is undamaged, I have heard that the
backgears frequently have the damage you explained. I would suggest several
solutions, depending on the tools you have available and your budget.
First, try several of the major used equipment dealers. I occasionally
notice they have Rockwell 11" lathes parting out. Plaza machinery had a
headstock recently - $100 IIRC. Sobel and Dave Ficken are other good
sources.
The repair procedure by Peterson in the link you posted is an excellent
procedure. I'd only do two things differently; suggest drilling two small
holes (1/16"?) 180 degrees apart at the loctite interface between the two
parts and inserting a pin to ensure the joint does not fail in shear. Also,
I'd consider milling the gear after the ring is attached to the backgear to
ensure concentricity.
I would try to repair the bull gear using the same procedure, although I
don't remember whether its configuration will enable it - but I believe it
does. By milling both gears, you won't need to worry about which pressure
angle to use, just get the clearance right for correct backlash.
An alternative to milling gears is to buy a two matching gears from a
supplier like Boston Gear and turn out the centers leaving rings and attach
them as described above. It will take a bit of research to ensure that the
backlash will be correct when engaged.
Please let us know how you work it out.
Regards,
Jim S.

Dude bah wrote in message ...
I'm trying to find some gears to repair my delta/rockwell 11" metal lathe.
They are not available from Delta (big surprise) so I'm seeking the

group's
advise on where I might find some.

In the case I can't find them, then advise on how to make replacements
would be just as good I suppose.

I've read this article on repairing the smaller gear on the bull gear, so
at least I have some clue on what I need:

http://www.metalwebnews.com/howto/delta/delta.html

A diagram of the gears I'm seeking is he

http://www.x35performance.com/gears.jpg

You can email me using the username info at this domain: x35performance
then dot com (f*ing spammers require this explanation grr)

Thanks for any help
Steve