G4026 Collet
Closer
If rough adjustments need to be made to the
collet closer assembly:
1. In the event that the above adjustments fail
to allow the collet to lock onto the material 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 G4026 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
Aftermarket
Accessories
Maintenance
3. Gently push on the end of the draw tube until
it engages the collet threads in the spindle,
and rotate the adjusting hub in a clockwise
fashion (as viewed from the outboard end of
the lathe in
Figure 8).
— If the draw tube fails to touch the collet,
remove the collet and look into the spindle to
see if the draw tube is accessible for proper
engagement. If the collet cannot touch the
draw tube when inserted into the spindle, see
the following section on “Rough Adjustment.”
If the collet does reach, try again to thread
the collet and adapter into the spindle by fol-
lowing the guidelines in the “Tube Assembly”
sub-section of this manual.
G4026 Collet Closer
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.
The Model G4026 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, accord-
ing 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.
