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Quoll15
6th December 2012, 05:36 PM
I have done something really stupid and broken the fibre gear in the head of my Sheraton Conquest Lathe (ex-Army)

I am looking for a replacement.

I have tried "Australian Metal Working Hobbyist" - with no luck.

Tried 600 Machine Tools - but they don't respond to my emails.

Any help in finding a replacement gear would be much appreciated.

Cheers!

Neil.

pipeclay
6th December 2012, 06:06 PM
Is it a straight cut gear or Helical,what does the bore look like.

Michael G
6th December 2012, 06:07 PM
Neil, if you can post details like diameters, number of teeth, thickness and all that other good stuff it is possible that someone has a spare. The other option is to make one up, but try the easy option first.
(Perhaps a photo of the broken gear too - we have some ingenious fixers here who may be able to suggest a way to repair)

Michael

morrisman
6th December 2012, 07:06 PM
:)



Hi I believe its a straight gear , it runs on a splined shaft

Sheraton lathe (South Bend copy) - Page 2 (http://www.practicalmachinist.com/vb/south-bend-lathes/sheraton-lathe-south-bend-copy-189437/index2.html)

jhovel
6th December 2012, 09:58 PM
Where is the damage? Is this your lathe or a catalogue photo?
As mentioned earlier, some dimensions, please. I have a collection of gears including fibre gears. Something may be adaptable - depending on the damage.

morrisman
6th December 2012, 10:06 PM
Where is the damage? Is this your lathe or a catalogue photo?
As mentioned earlier, some dimensions, please. I have a collection of gears including fibre gears. Something may be adaptable - depending on the damage.



Joe , it's not me with the broken gear... I just uploaded that pic as a example ....Mike

jhovel
6th December 2012, 10:39 PM
OOps, my bad.... just read through the posts and didn't check the names.... :B

Greg Q
7th December 2012, 02:51 AM
If you elect to remake a fibre gear ensure that is is cut from flat stock as opposed to cylindrical. The weave in cloth/resin material is radial in sheet material and axial in cylidrical, rendering the strength of the part critically different. "Micarta" is the brand name of the resin impregnated cloth composite with which I am most familiar.

Greg

BTW...my lathe employs similar gears which I have reproduced in acetal plastic with great results.

Quoll15
7th December 2012, 09:49 AM
I have taken a photo of the gear - will get dimensions when I get the head apart.243732

I don't have tyhe skills or machinery to make a new gear - only a newbie at all this - not off to a good start so far :-).


Quoll15
(Neil)

wbleeker
7th December 2012, 10:04 AM
I am pretty sure another name for that material is Tufnol, a lot of Macsons used to have these gears also.
Will