WTB Aloris CA 2" and 2-1/2" boring bar holders

[Garwood]

WTB one of each 2" and 2.5" bar holders for Aloris CA toolpost.

Thanks!

 

[eKretz]

Did they ever make a 2½" in CA? I've never seen one. Not sure I've even seen a 2". The biggest I've got in CA is 1½".

 

[Garwood]

Did they ever make a 2½" in CA? I've never seen one. Not sure I've even seen a 2". The biggest I've got in CA is 1½".

Yes. 2" and 2.5" were made by Aloris. Probably bigger than makes sense to run on a CA post. For the times I want to run larger bars I'd like the option to do it easily.

 

[hvnlymachining]

I've got a 2-1/2" for my Dorian DA, it's a full load for that, can't imagine what it'd look like on a CA! Also might run into an issue trying to get your boring bar on center.

 

[4GSR]

I know Dorian makes 2" for the CA size tool post. I've seen them in use! Not sure about 2-1/2" size. Heck, make your own. I made a 1-3/4" one for a CA tool post I used to have years ago.

 

[Garwood]

I know Dorian makes 2" for the CA size tool post. I've seen them in use! Not sure about 2-1/2" size. Heck, make your own. I made a 1-3/4" one for a CA tool post I used to have years ago.

Here is a 2.5 is CA flavor.

Aloris Tool CA-4D-S-2500 Qualified 2.5" Boring Bar Holder | eBay

Find many great new & used options and get the best deals for Aloris Tool CA-4D-S-2500 Qualified 2.5" Boring Bar Holder at the best online prices at eBay! Free shipping for many products!

www.ebay.com

 

[eKretz]

I wonder if that 2½" isn't a custom that they only make per order. Might be worth a call to find out.

 

[4GSR]

They sure are proud of the price on used ones!!!! Especially the shipping, too!

 

[hvnlymachining]

With a 3-5/8" tool post height and a block standing 3-5/16" your ability to adjust your bar height is sure limited. Higher isn't so bad but getting it lower is going to be a challenge! But now I want one too! ( Got two shop lathes with CAs, 2 with DAs and searching for a cheap EA. )

 

[eKretz]

I worked at a place that had a really nice setup for boring with a CA. They had 1½" bars but with a short (around 1" wide) larger diameter flange on the business end, and they used the Kennametal bolt-on heads offset to the front of the bar, so they could be easily swapped out for different jobs. You set up the bar by stacking tubular spacers between that flange and the CA toolholder to get the length needed, then also over whatever 1½" part of the bar that protruded past the other end of the CA. The spacers were selected such that they ovehung the end of the bar on the tailstock end, then a flat plate with a hole through was placed on the end of the stack and a bolt was used to pull that stack tight against the CA with a threaded hole in the end of the 1½" bar. They worked very well.

 

[4GSR]

Pulling your boring bar in compression like that will almost eliminate any chatter most steel bars produce when hanging out a long distance.

 

[Garwood]

I worked at a place that had a really nice setup for boring with a CA. They had 1½" bars but with a short (around 1" wide) larger diameter flange on the business end, and they used the Kennanetal bolt-on heads offset to the front of the bar, so they could be easily swapped out for different jobs. You set up the bar by stacking tubular spacers between that flange and the CA toolholder to get the length needed, then also over whatever 1½" part of the bar that protruded past the other end of the CA. The spacers were selected such that they ovehung the end of the bar on the tailstock end, then a flat plate with a hole through was placed on the end of the stack and a bolt was used to pull that stack tight against the CA with a threaded hole in the end of the 1½" bar. They worked very well.

That's a great idea! I have numerous 1-1/2" Kenna modular boring heads.

 

[eKretz]

Pulling your boring bar in compression like that will almost eliminate any chatter most steel bars produce when hanging out a long distance.

It worked awesome, I can tell you that. Some of the most solid smaller bars I ever used. The core of the bar in tension and the tubular sleeves in compression. They had a nice assortment of sleeves in thicknesses from ½" to 3".