ER25 Tooling

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A set of ER25 tooling.

ER25 Tooling
Owner/Loaner McTavish McArdle
Serial Number 69053 02866 (collet set)
Make/Model 3900-5235 (collet set)
Arrival Date 2018-02-24
Usability yes
Contact McTavish McArdle
Where Removed
Authorization Needed no
Hackable no
Estimated Value $200
Host Area Cold Metals

ER25 Tooling McTavish McArdle Area: Cold Metals


This tooling set includes:

  • A 15-piece set of ER25 collets, in 1/16" increments, from 1/16" to 5/8" (the full range of the collet size)
  • Two ER25 collet blocks; for both blocks, the nut is larger than the block diameter, so careful work holding is needed
    • A square collet block, 35mm across & ~42mm tall
    • A hex collet block, 35mm across (minor diameter) & ~42mm tall
  • An ER25 collet holder, with an integral R8 taper
    • [Note that the runout on this collet holder is rather horrific, and it will need to be reground before it will be useful]
  • An ER25 collet nut spanner (affixed by magnets to the inside top of the box)