Haas TRT210, Operator'S Manual, Page: 31 / 79

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TRT
TILTING ROTARY
TABLE
TRT
O M
PERATOR’S ANUAL
TILTING ROTARY
TABLE
96-5048 rev E
June 2002
Collet Closer Removal (Model AC25 / AC125)
The air collet closer is fitted at the factory and is not intended to be removed. If you do remove it, use a woven
strap wrench. A special spindle nut is used and must be replaced before you can use the manual lever. When
re-installing the air collet closer, it must be tightened securely or it may come loose during indexing.
2.11 U
SE OF
C
OLLETS WITH
HAAS C
OLLET
C
LOSERS
Collet Installation (AC25)
To install a collet, line the collet keyway up with the spindle key and insert the collet. There are two ways to
turn the draw tube to adjust the collet:
1. If you are using a collet with an 11/64" or larger opening, you can insert a 9/64" hex wrench
through the collet to turn the draw tube.
2. If you are using a collet with an opening smaller than 11/64", you can adjust the collet by turning
the draw tube with a pin through a slot. Look between the back face of the worm gear and collet
closer and you will see some holes in the draw tube. If they are not visible, jog the spindle until
they come into position. Use a 9/64 diameter pin to rotate the draw tube and tighten the collet in
position. There are 15 adjustment holes, so it will take 15 steps to turn the draw tube one full
revolution. Put a part in the collet and tighten until it grips the part then back the draw tube off ¼ to
½ turn.
WARNING!!
Multi-spindle and HA5C units require a minimum collet of 11/64" (Op-
tion #2 not possible due to lack of clearance.)
Collet Installation (Model AC125)
All collets used with the AC125 must be clean and in good condition. To install a collet in the AC125 , align the
collet keyway with the spindle key and insert the collet. Insert a 5/16" hex wrench into the hex in the back of
the drawtube, and turn the drawtube to engage the collet. Turn the drawtube until it grips the part, and then
back off approximately 1/4 turn. This will be a good starting point for fine-tuning the grip range.
Collet Sticking
NOTE: To prevent excessive wear and collet sticking, make sure collets are in good
condition and free from burrs. A light coat of Molybdenum grease on the collet
wear surfaces will extend the life of the spindle/collet and help prevent sticking
When using the AC25 , releasing a collet is accomplished by removing the air supply. It is then pushed out by a
heavy spring inside the air collet.
The AC125 uses shop air to pull the drawtube in, and a heavy internal spring to push the drawtube out and
release the collet. If, after repeated use, the spring will not push the collet out, use one of the following meth-
ods to remove the collet and lubricate the outside of the collet with a light grease before re-inserting:
1. If the three-way air valve provided with the unit becomes clogged with contaminates, the exhaust
airflow may be restricted, which may cause the collet to stick in the taper. If this situation arises,
leave the valve in the clamped position, and connect and disconnect the air supply several times in
rapid succession.
2. If the above procedure does not free the collet, switch the valve to the unclamped position, then
gently tap the back end of the drawtube with a plastic faced mallet.
SETTING UP TRT