Can anyone help identify this collet chuck set?

jmarkwolf

Active User
H-M Supporter Gold Member
I bought this R8 collet chuck set 20 years ago but don't remember where, and I can find no reference to it on the web, using the identifiers on the package set. There's seven collets ranging from 1/4in to 1in. I believe it's Asian, but It's very nice quality none the less, and holding up very well after 20 years of use. There's no reference to whether theses are ER32 collets or what.

I'd like to buy an mt3 collet chuck for my lathe and make use of the same collets, but can't identify the make, model, ER32 or not, etc.

Does anyone know if R.F.T. is simply gone or became somebody else?

Further, can anyone advise if these look like ER32 collets, how standardized they are, and how likely any new such collets will fit my current collet chuck?
 

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Look up the specs for ER collets, like angles and lengths then compare measurements.
 
They look like a set I have down the basement . Will (darkzero) and I determined what they were , but I can't remember now . What are the dimensions ?
 

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Your 4th box says OZ25-1 and that is what they are - OZ25

They are very close to ER40 but not quite. I have a full set after lots of searching around as my Bridgeport came with a partial set of the OZ25 collets and a QC30 to OZ25 collet adaptor.

I was able to track down the missing collets at a place in California
 
Right you are Brent.

I had never heard of OZ25 collets. Apparently they are more prevalent in Europe, more commonly mated with large holders like CAT40 and MMBT40, etc. On the hunt now.
 
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