50 int collets

[ukracer]

What size are 50 INT collets as I have access to some at a good price but not sure if they are 50 or 40 or what mills they will fit??

 

[CRB]

40 taper is 1.75" at gauge line
50 taper is 2.75" at gauge line

3.5 in per foot taper

NMTB (Quick Change) Shank
ANSI B5.18, National Machine Tool Builders' Association, 1927. DIN 2080 / IS 2340, ISO R 290-2583
Also called Quick Change, NMTB, MM, National Standard, American Standard Machine Taper, etc.
Units built to the ISO standards are commonly considered interchangeable with ANSI units. However,
there are a few differences. (See Tables below). Most (but not all) NMTB shanks are compatible with
the corresponding size Erickson Quick-Change Spindles. (See discussion below the tables).

http://www.tools-n-gizmos.com/specs/Tapers.html
http://www.arceurotrade.co.uk/Catalogue/Collets/ER-Milling-Collet-Chucks-International-Shank

 

[ukracer]

40 taper is 1.75" at gauge line
50 taper is 2.75" at gauge line

3.5 in per foot taper

NMTB (Quick Change) Shank
ANSI B5.18, National Machine Tool Builders' Association, 1927. DIN 2080 / IS 2340, ISO R 290-2583
Also called Quick Change, NMTB, MM, National Standard, American Standard Machine Taper, etc.
Units built to the ISO standards are commonly considered interchangeable with ANSI units. However,
there are a few differences. (See Tables below). Most (but not all) NMTB shanks are compatible with
the corresponding size Erickson Quick-Change Spindles. (See discussion below the tables).

http://www.tools-n-gizmos.com/specs/Tapers.html
http://www.arceurotrade.co.uk/Catalogue/Collets/ER-Milling-Collet-Chucks-International-Shank

Cheers mate. I have a lot on just now but will find that very useful in a day or so I hope.