Help identify collet chuck

[colin hamiltonParticipant @colinhamilton16803]

I bought a mixed lot of machine tooling and was hoping to get some help identifying this collet chuck. What collets are they? And what taper is the it? I've got a brideport so this obviously doesn't fit but I was wondering it I could machine the taper parallel to fit a suitable R8 collet?

Thanks Colin

[colin hamiltonParticipant @colinhamilton16803]

[AJAXParticipant @ajax]

Looks like 40int

[JourneymanParticipant @journeyman]

Appears to be an ISO taper as stated probably INT40 as this is common. These are non-locking tapers having a standard slope of 7:24 (≈16° included angle). There are several different systems all using the same angle taper but with different draw-bar threads, ends and flanges so it can get a bit confusing. There are also several size ranges 30 to 60 but by far the most common is 40, there is a vast range of industrial tooling made with this taper.

• ISO, NT, NMTB, DIN2080 – short parallel section at small end. Equal drive slots.
• CAT, CV, V-Flange, DIN 69871 – no parallel section. Unequal drive slots.
• BT, MAS403, DIN6383 – no parallel section. Equal drive slots.

Hope that helps a bit to identify what you have. I somehow doubt that you will be able to machine what you have to fit an R8 taper in the Bridgeport.

John

Edited By Journeyman on 25/08/2023 18:38:33

[DC31kParticipant @dc31k]

Looks like an OZ collet.

Lots of somewhat dubious supposition above. The easiest way to confirm, rather than to speculate, is to measure the drawbar thread: if it is M12 or 1/2", it will be 30 taper. If it is 5/8" or M16, it will be 40 taper. You can also measure the fat end of the taper: 1.25" for 30 taper, 1.75" for 40 taper.

[peak4Participant @peak4]

If this is the correct company, you could ask them
http://aiptools.net/products

Bill

[old martParticipant @oldmart]

The code on the ISO or BT40 collet body would tell what the collets are, maybe googling it would help. Whatever they are, it would be a waste of time trying to get them usable on R8.

[DC31kParticipant @dc31k]

Posted by peak4 on 25/08/2023 19:44:59:

If this is the correct company

The company is 'LAIP'.

https://www.laip.es/en

[Tony Pratt 1Participant @tonypratt1]

Posted by old mart on 25/08/2023 20:44:48:

The code on the ISO or BT40 collet body would tell what the collets are, maybe googling it would help. Whatever they are, it would be a waste of time trying to get them usable on R8.

I'm with old mart, hardly worth trying to make them usable on an R8 spindle.

Tony

[Howard LewisParticipant @howardlewis46836]

INT tapers are all 3 .75" / foot.

Our youngest member recently received an award for makling an INT40 taper fitting to carry ER40 collets,

So, if you are that way inclined (No pun ) sonething similar, but R8, could be made for these collets to be used .

Howard

[DC31kParticipant @dc31k]

Posted by Howard Lewis on 26/08/2023 17:00:00:

INT tapers are all 3 .75" / foot.

Our youngest member recently received an award for makling an INT40 taper fitting to carry ER40 collets,

One can only hope that at no point during his making of it did he confer with you on specifications.

Please advise how 3.75" per foot can work out to be 7 in 24.

[colin hamiltonParticipant @colinhamilton16803]

Thanks everyone. I'll have a look at the various raper specs. If I can identify it I will try and sell on. If not I'll have a go at turning the taper down.

[old martParticipant @oldmart]

If you are going to have a go at modifying the 40, check its hardness first, and consider the relative lengths, the bore size also the drawbar thread change to 7/16 UNF.

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