ID a milling cutter taper

[angrybear]

Help please gents,
I bought a job lot of 70+ milling cutters off the bay but cannot ID the mounting taper to try & buy an adaptor/chuck/collet to fit my little mini mill.
the dimensions are
large 13.4mm (17/32") - 11.66mm (29/64") machined length of taper 44mm (1 11/16")

Small 10.34mm (13/32") - 9.17mm (23/64") machined length of taper 32mm (1 3/16")

I did ask the seller before buying if they would suit my MT2-ER20 collet chuck, he said yes but obviously they don't,
I'd like to try & get an adaptor before I return them "not as described" but Need to know what the taper is, It's not Morse.

[Ca_Varminter]

Well the most used is the Morse Taper.
There are many online charts of the dimension of the MT and also the Taper Calculation!

Good Luck,
Stuart

[Ca_Varminter]

Here is the standards fore the Morse Taper from my Machinist Handbook....

MT#    Taper per inch    Socket openning
0         .05205"          .3561"
1         .04988"          .475"
2         .04995           .700"

Stuart

[angrybear]

Thanks Stuart, they're 100% Not Morse taper, I took a couple in to "Axminster tools" today & they're visibly different to Morse, shorter with a slightly steeper taper, they couldn't ID them,
They directed me to a former staff member who they said is "the all knowing oracle of machining" & he's also stumped,
so it looks like they'll get returned to the seller not as described.

[Ca_Varminter]

So to hear that....
So It must some In-House made tooling for their milling machine.
Must be from a High End Milling Machine Maker... to have the tooling o make their own Tools!!

Stuart

[Billgatese30]

These look similar to reamers I used to use as an apprentice, matched to the machine for sure but I can't for the life of me remember name of it!