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[4]

AXA boring bars? Size?

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markba633csi

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#1
I see that the AXA QCTP (such as Bostar) includes a large boring bar holder but they say maximum bar dia. is 7/16". What do you do if you want to use 1/2" bars?
Do you drill out the holder and make another sleeve? What are you guys doing?
thanks
Mark
 

mikey

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#2
Odd. I wonder if the 7/16" is a typo? The typical Aloris style boring bar holder has a 3/4" bore. Well, at least my Aloris 4D does. Not sure about the Chinese ones, though.
 

francist

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#3
LMS lists their AXA set as taking up to 3/4" diameter round bars using their #4 holder.

-frank

Capture AXA LMS.JPG
 

markba633csi

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#4
Must be a typo on the ebay listing- think I'll message the seller and ask
 

benmychree

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#5
To answer the other question posed, likely the hole could not be enlarged; this stuff is usually case hardened.
 

P. Waller

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#6
I use a 1 1/2" wedge tool block for round boring bars on a small lathe and have made several split sleeves to hold smaller diameter bars without issue, the wedge holders are very stout but can be a chore to change tools.

You will have little problem with buying the largest holder and sleeving it to suit.
 

Nogoingback

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#7
My Phase II boring bar holder accepts 3/4" bars as well. I think mikey is right: probably a typo.
 
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