Collets

[Tozguy]

What Brino said.

My choice was ER32 collets. I bought a budget R8 set because my lathe chucks do not hold small diameters (1/2'' or less) very well. A MT5 to MT3 soft sleeve was bored to receive the R8 chuck.

I also made my own D1-4 collet chuck so that longer stock could be held through the spindle.

What taper does your spindle have?

 

[cpncrnch]

There's a great discussion on collets here:
http://www.hobby-machinist.com/threads/is-there-a-definitive-article-on-collets.36227/
....and I do mention there how useful the Beall is.

-brino

Thank you for the respons brino! $165 is not a bad price for the set from Beall (the chuck that threads onto the spindle, the tightening nut, wrenches and collets)! I will let you know how I fair when I get them...

 

[cpncrnch]

What Brino said.

My choice was ER32 collets. I bought a budget R8 set because my lathe chucks do not hold small diameters (1/2'' or less) very well. A MT5 to MT3 soft sleeve was bored to receive the R8 chuck.

I also made my own D1-4 collet chuck so that longer stock could be held through the spindle.

What taper does your spindle have?

Not sure what taper is on the spindle, and how would I find this information out!? Again, I am new to all this. Someone gave me this machine (Logan 825 9" lathe).

 

[brino]

Not sure what taper is on the spindle, and how would I find this information out!? Again, I am new to all this. Someone gave me this machine (Logan 825 9" lathe).

Page 4 (or pdf page 6 of 82) of this manual:
http://www.hobby-machinist.com/resources/logan800series.2987/

says:

(....and Beall Tool has that size available)

Of course you could also make your own collet adaptor. A number of people here have.
I will post back with links if I can find them.

-brino

EDIT: here are some useful links:
http://www.hobby-machinist.com/threads/do-i-need-a-collet-chuck.49453/#post-416603
http://www.hobby-machinist.com/threads/er-40-collet-chuck-and-spanner-wrench.45930/
http://www.hobby-machinist.com/threads/er25-collet-chuck-for-atlas-618.41636/
http://www.hobby-machinist.com/threads/er-40-collets.45328/#post-386544

 

[brino]

.....and a bit more from the next manual page:


My Beall ER-32 system allows me to have a bar up to 3/4" thru the spindle (limited by the Southbend spindle).

-brino


EDIT: also see page 15 (or pdf page 17 of 82) of the same manual for more collet related stuff.

 

[kd4gij]

The ER collet system is designed for tool holding. That said it is a good choice for work holding in a home hobby shop for small work, and softer materials. It would be a poor choice for production work. I use ER 40 for larger capacity.

 

[cpncrnch]

Thank you! I will also be in the market for a QCTP. Any suggestions?