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G8143 Collet Closer -9-
If rough adjustments need to be made to the
collet closer assembly:
1. In the event that the previous adjustments
fail to allow the collet to lock onto the mater-
ial or the draw tube fails to touch the collet,
adjust the adapter hub in or out.
2. Loosen the setscrews and turn the hub
adapter in a clockwise direction if the draw
tube does not contact the back of the collet.
3. Turn the hub adapter counter-clockwise if the
work material cannot be locked by the collet.
4. Tighten the setscrews.
The Model G8143 Collet Closer is adjusted prop-
erly when the 3 collet locking pawls are tight on
the cam and the workpiece will not twist in the
collet. Again, Figure 12 on page 7 shows the
proper locked position of the collet locking pawls
around the cam.
Rough Adjustment Maintenance
The Model G8143 Collet Closer is essential-
ly a maintenance free tool; however, some
things to keep in mind are:
1. Make sure that all the components of your
collet closer are assembled correctly,
according to this manual.
2. Once the replacement stud and hub adapter
are installed, they will not need to be
removed.
3. Ensure that your locking mechanism is work-
ing properly before you start any projects on
your lathe.
4. Check the locking stroke for proper place-
ment of locking pawls on the cams.
5. The bearings are non-serviceable. If you
have problems with your bearings, you must
order a new bearing pack.
6. The hub adapter must be removed in order
to change gears occasionally.
Aftermarket
Accessories
5-C collets do not come with the Model G4026
Collet Closer. However, they are available in the
current Grizzly Catalog:
• Model G1238 15 piece collet set, ranging in
diameters from
1
⁄8" to 1".
• Collets are also sold separately in individual
sizes.