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R 8 adapter
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12-07-2014, 05:02 PM
Hi
Lads I was given this boring head today Any ideas on a R8 spindle / mandrel for it I can always make one The centre hole is 40 mill ![[Image: S1230012_zps1fcf5676.jpg]](http://s261.photobucket.com/user/john970s0/media/S1230012_zps1fcf5676.jpg.html) ![[Image: S1230011_zpscb80092e.jpg]](http://s261.photobucket.com/user/john970s0/media/S1230011_zpscb80092e.jpg.html) ![[Image: S1230013_zpsd064581f.jpg]](http://s261.photobucket.com/user/john970s0/media/S1230013_zpsd064581f.jpg.html) ![[Image: S1230010_zpsee76b665.jpg]](http://s261.photobucket.com/user/john970s0/media/S1230010_zpsee76b665.jpg.html) ![[Image: S1230008_zps2c1bcafe.jpg]](http://s261.photobucket.com/user/john970s0/media/S1230008_zps2c1bcafe.jpg.html) Regards John 
12-07-2014, 05:32 PM
John, I'd be tempted to buy one of the many R8 threaded adaptors available for boring heads, and just make a plate with the appropriate PCD holes drilled in it
http://www.rdgtools.co.uk/acatalog/BORIN...HANKS.html
Andrew Mawson, proud to be a member of MetalworkingFun Forum since Oct 2013.
12-07-2014, 05:35 PM
like Awemawson said buy a threaded arbor and make a plate
dallen, proud to be a member of MetalworkingFun Forum since Apr 2012.
If life seems normal, your not going fast enough! 
12-07-2014, 05:42 PM
I have a spare R8 to a Jacobs taper I will modify that
It is a nice looking boring head John
12-07-2014, 06:00 PM
I hope it's one of the beefier Jacobs tapers then - that looks to be quite a chunky head !
Andrew Mawson, proud to be a member of MetalworkingFun Forum since Oct 2013.
12-07-2014, 06:05 PM
I will turn off the taper then ether thread it & screw it in.
Or press fit and weld . Most likely both . John |
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Will make a good video topic too 
