Mounting Instruction Of Collet Chuck Holder - Optimum Optiturn TU 2506 Operating Manual

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3.8.3 Mounting instruction of collet chuck holder

Mounting of collet chuck holder 344 1305 on your lathe.
Proceed as follows.

Mark out the position of the jaw chuck
at the spindle flange before disman-
tling with an e.g. felt-tipped pen. This
allows an identical reassembly.

Dismantle the jaw chuck.

Clean all faces of the spindle nose and
of the collet chuck holder extremely
thoroughly.

Dismantle the thread pins of the jaw
chuck and screw in the thread pins into
the collet chuck holder.

Measure the run out of the spindle
flange. Mark out the greatest positive
rash of the dial gauge at the spindle
flange with an e.g. felt-tipped pen.

Attach the collet chuck holder to the
spindle flange, tighten the nuts easily.
Pull in the nuts stepwise ones and uni-
formly alternating at least three times
in succession (you receive the run out
possible for best only this way).

Measure the run out of the collet chuck
holder at the conical surface.

Position the collet chuck holder by
turning each 120° at the spindle flange
to the highest run out precision is
achieved.

Mark out the position of the highest cir-
cularity accuracy of spindle flange with
collet chuck holder and assemble after
this the collet chuck holder on the
highest circularity accuracy position.
GB TU2506 | TU2506V | TU2807 | TU2807V
Page 110
Spindle flange
(short-taper seat)
Measuring position
Set screw
Measuring
position
Img.3-5: Collet chuck holder 344 1305 without union
nut.
Original operating instructions
Assembly
Version 1.0.1 2014-05-16