ASR1200 Rotary Stage User's Manual
Installation
2.5. Changing ASR Workholding Devices
ASR1200 stages are equipped with an ER16 style collet. It is important that only the collets designed for a
particular collet holder are used. Aerotech collet chucks are designed for use with ER collets manufactured to
DIN6499 specifications. Aerotech recommends the use of ultra precision electroplated collets only. Contact
the factory for more details.
N O T E :
Various grip diameters are commonly available and can be interchanged following the collet
removal and installation procedure detailed in Section 2.5.1.
2.5.1. Collet Installation and Removal Procedure
To minimize the possibility of bodily injury, confirm that all electrical power is disconnected
prior to making any mechanical adjustments.
1. Before any collet change operation, remove power to the stage.
2. Apply air pressure to loosen the collet chuck.
3. Unscrew the collet nut. If necessary, use a spanner wrench (available from Aerotech).
4. For installation of a collet, first clean the collet housing, collet nut threads, collet nut, and new collet. Ace-
tone or isopropyl alcohol may be used to clean the metal components. A small amount of any general-pur-
pose, high viscosity grease can be applied to collet taper to help reduce friction and decrease wear.
5. Noting the orientation of the spot drill on the back side of the collet nut, refer to the instructions in Figure
2-3 to install the collet.
6. Guide the collet using the nut into the stage (Figure 2-4) making sure that the collet seats properly in its
taper. Be sure that air pressure is still being supplied to the stage so the collet chuck is in the open posi-
tion.
7. Tighten the collet nut. Tightening by hand is sufficient as the clamping force is not determined by the
torque of the nut, but by the force of internal springs. Spanner wrenches may be used if desired.
8. Restore power to the stage.
9. For removal of a collet from the collet nut, apply pressure to the front of the collet while tilting it towards
the spot drill.
www.aerotech.com
Chapter 2
13
