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WTT: my 3J collets for your 2J collets

paroikoi

Aluminum
Joined
Oct 2, 2014
Location
Jonesboro, AR, USA
I came into 17 3J collets and need certain 2J collets for my Sjogren speed chuck. I'm no collet expert so I don't know if some of these have been drilled or bored to a larger size. These are the marked sizes:

3/16" - Hardinge
1/4" - Lyndex
5/16" - Lyndex
7/16" - Lyndex, quantity 2
1/2" - Lyndex, quantity 2
17/32" no brand marking visible, has different font than Lyndex, so likely not Lyndex
9/16" - Lyndex
5/8" - Lyndex, quantity 2 (one of these has been cut shorter - see photos)
3/4" - Lyndex, quantity 2

Emergency collet bored out to a little over 1" - Lyndex
Emergency collet bored out 1-1/4" - Lyndex
7/16" Lyndex collet machined out to a weird triangular shape - quantity 2

I don't know how much larger than marked size a collet should be without being clamped in a collet closer. Of the above listed standard size collets, only the two 7/16" collets and one of the 3/4" collets are close enough to marked size that I can put an end mill of that size into the bore and close it tightly with just my hand. The others seem to have 1/32" to even 1/16" slop. I don't know if that is normal. The bores look shiny and undamaged. The bores on my 2J collets seem to have similar slop and close properly on end mills of marked size in my Sjogren chuck but not by squeezing the collet with just my hand. They may all be fine. I'm just pointing this out so there are no surprises.

I need more 2J collets. I have 1/8" through 1" by 16ths and then up to 1-3/8" by 8ths. I want just about everything else, especially 32nds to 1" and 16ths above that.

Any takers?

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IMG_20200506_203512.jpg
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I can email or text larger photos if need be.
 
I'm also willing to sell these or trade for various other things I need such as CXA tool holders, a boring head I can use on my Van Norman #12 (I have a boring head adapter), boring bars for same, drill chuck shanks/arbors MT4 or MT3 to 3JT or 2JT, a Jarno #12 or #13 dead center, a 6" or 8" rotary table for my VN12 (needs to do both horizontal and vertical), a VN12 dividing head, a VN12 high speed head (I don't recall the specific name, but the attachment that has a built-in quill), or a larger 3-groove motor sheave for my Monarch 12CK.
 








 
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