Needs Pictures: 0
Results 1 to 1 of 1
-
18th Apr 2018, 01:16 AM #1.
- Join Date
- Nov 2008
- Location
- Perth WA
- Age
- 71
- Posts
- 6,458
A Boring Head's Cheap Enhancement
My 63mm diameter boring head accommodates 10mm diameter boring bars and accessories. I have no 10mm bars and so far I have made do with modified indexable carbide bars which have a minimum boring diameter of about 20mm. I also have a bitty boring head which will bore a maximum of 12mm. It uses 4mm diameter boring bars.
108 (Large).jpg DSC_8104 .1jpg.jpg
With the desire to reduce the minimum boring diameter of the larger head in mind I spent $8.26US on an ER11 chuck. https://www.ebay.com/itm/C10-ER11A-1...53.m2749.l2649
I opted for the ER11 because the head of an ER11 chuck is shorter by about 6mm than the head of an ER11M chuck and with a mill bereft of Z, the millimetres count.
So today, with the chuck's arbor suitably shortened and flatted, I had reason to use it. I needed to bore what I hoped would be a well finished 14mm diameter hole in a 14mm thick piece of 1045. With a 0.01mm cut at 600RPM and the power feed of 11mm per minute, the 4mm dia. carbide bar produced an extremely (IMO) neat hole. Well worth the expenditure. I might lash out and buy an ER16 chuck to further expand the head's usefulness.
IMG_20180417_142334217 (Large).jpg
BT
Similar Threads
-
Wanted mt 4 boring head. Vic
By azzrock in forum WANTED TO BUYReplies: 0Last Post: 9th Jul 2016, 01:56 AM -
Boring Head
By scottyd in forum METALWORK PROJECTSReplies: 11Last Post: 1st May 2016, 08:48 PM -
What is this boring head used for?
By jhovel in forum METALWORK GENERALReplies: 7Last Post: 23rd Sep 2011, 10:12 PM -
CTC Boring Head
By Anorak Bob in forum METALWORK GENERALReplies: 41Last Post: 12th May 2011, 08:31 AM -
SOLD: 50mm-mt3 shank precision boring head & boring bar kit
By SurfinNev in forum METALWORK - Machinery, Equipment, MARKETReplies: 5Last Post: 15th Jul 2010, 02:42 PM