Collet I.D.

[gmach10]

I was doing some house cleaning and came across these. Anyone familiar with Porst Bros. Manufacturing of Chicago? I have 26 Pratt & Whitney No. 3 N.S. collets. 1/16" capacity to 1/2" capacity by 1/64ths. Not sure what sizes are missing. My questions are, are they specific to Pratt & Whitney machine spindles or will they cross fit anything else? Most are still in the original boxes.

 

[Bill D]

Pratt and Whitney 1 1/2 B Jig Borer, Need Collets!

 

[jim rozen]

I think those collets fit the older number three P&W lathe.

 

[jim rozen]

I think those collets fit the older number three P&W lathe.

Likely:

Collets

Are these for sale?

 

[Doozer]

NS is new style.
OS is old style.
I had a Rivett 608 that used 4NS collets.
I think a few machines used these collets.
What I.D. sizes are you looking for ?

-D

 

[jim rozen]

NS is new style.
OS is old style.
I had a Rivett 608 that used 4NS collets.
I think a few machines used these collets.
What I.D. sizes are you looking for ?

-D

I have 3Cs that have been adapted to run in place of 3NS collets, but I've only got by 32s. So any thing up to 1/2 inch by 64ths would be of interest....

 

[gmach10]

Check your in box for a PM.

 

[richardcranium]

Pratt and Whitney 1 1/2 B Jig Borer, Need Collets!

I know this is an old thread but wondering if you found collets. I have a few.