Dremel 4300 Operating/Safety Instructions Manual page 13

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COLLETS
Four different size collets (see illus tration), to
accommodate different shank sizes, are avail -
able for your Rotary Tool. To install a different
collet, remove the collet nut and remove the old
collet. Insert the unslotted end of the collet in
the hole in the end of the tool shaft. Replace
Always use the collet
collet nut on the shaft.
which matches the shank
size of the accessory you plan to use. Never
Note: Most rotary tool kits do not include all
force a larger diameter shank into a collet.
four collets sizes.
FIG. 4
480
1/8"
COLLET
COLLET
NUT
IDENTIFICATION
481
3/32"
COLLET 482
1/16"
COLLET
COLLET IDENTIFICATION CHART
Collet sizes can be identified by the rings
on the back end of collet.
1/32" Collet has one (1) ring.
1/16" Collet has two (2) rings.
1/8" Collet has no rings. (Included in
3/32" Collet has three (3) rings.
most tool kits on the tool)
FIxING STUCK COLLETS
It is possible for a collet to get stuck within the
collet nut especially if a collet nut is tightened
onto the tool without a bit in place. If this
happens, the collet can be removed from the
collet nut by pushing the shank of an accessory
into the hole in the collet nut. This should cause
the collet to pop out of the collet nut.
COLLET NUT
To loosen, first press shaft lock button and
rotate the shaft by hand until the lock engages
the shaft preventing further rotation. Your
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Dremel 4300 is equipped with a quick shaft lock
mechanism. This mechanism engages the
output shaft in 8 separate locations on the shaft
for easier operation.
With the shaft lock engaged use the collet
wrench to loosen the collet nut if necessary. The
collet nut must be loosely threaded on when
inserting an accessory. Change accessories by
inserting the new one into the collet as far as
possible to minimize runout and unbalance.
With the shaft lock engaged, use collet wrench
collet nut. (Fig. 5). Avoid excessive tightening
or EZ Twist Nose Cap to securely tighten the
of the collet nut when there is no bit
inserted.
COLLET
WRENCH
RINGS
483
1/32"
TO
COLLET
TIGHTEN
EZ TWIST™ INTEGRATED
WRENCH/NOSE CAP
The nose cap of your tool has an integrated
wrench allowing you to loosen and tighten the
collet nut without the use of the standard collet
wrench. Unscrew the nose cap from the tool,
line-up steel insert on inside of cap with collet
nut. With the shaft lock engaged twist nose cap
clockwise to tighten, and counter-clockwise to
loosen (Fig. 6).
SHAFT LOCK
COLLET
NUT
TO
TIGHTEN
Do not engage lock while
the Rotary Tool is running.
SHAFT LOCK
BUTTON FIG. 5
COLLET
TO
NUT
LOOSEN
BUTTON
FIG. 6
EZ TWIST™
TO
INTEGRATED
LOOSEN
WRENCH/NOSE CAP
13
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