Collet Collet; Nut; Assembly - Dremel 275T6, 285T6, 395T6 Owner's Manual

DM 2610925474 10-04
Always unplug Rotary Tool
!
WARNING
before changing accessories,
changing collets or servicing your Rotary Tool.
SHAFT LOCK
BUTTON
COLLET
WRENCH
TO TIGHTEN
TO LOOSEN
COLLET NUT — To loosen, first press shaft lock
button and rotate the shaft by hand until the lock
engages the shaft preventing further rotation.
Do not engage lock while the
!
CAUTION
Rotary Tool is running.
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, finger tighten
the collet nut until the accessory shank is gripped by
the collet. Avoid excessive tightening of the collet
nut when there is no bit inserted.
COLLETS — Four different size collets (see illus-
tration), to accommodate different shank sizes, are
available 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 collet nut on the shaft.
Always use the collet which
!
CAUTION
matches the shank size of the
accessory you plan to use. Never force a larger
diameter shank into a collet.
Note: Some rotary tool kits may not include all four
collets sizes.
BALANCING ACCESSORIES — For precision work, it
is important that all accessories be in good balance
(much the same as the tires on your automobile). To
true up or balance an accessory, slightly loosen collet
nut and give the accessory or collet a 1/4 turn. Re-
tighten collet nut and run the Rotary Tool. You should
be able to tell by the sound and feel if your accessory
is running in balance. Continue adjusting in this
fashion until best balance is achieved. To maintain
balance on abrasive wheel points, before each use,
with the wheel point secured in the collet, turn on the
10/19/04 3:39 PM

Assembly

COLLET

NUT

COLLET
Page 8
Page 8
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.
3/32" Collet has three (3) rings.
1/8" Collet has no rings.
KEYLESS CHUCK
COLLET NUT
480
1/8"
481
COLLET
3/32"
COLLET
Rotary Tool and run the 415 Dressing Stone lightly
against the revolving wheel point. This removes high
spots and trues up the wheel point for good balance.
The hanger is provided for the use of hanging your
tool while using the flex-shaft or for storage. If you do
not use the hanger, remove it from the tool and snap
it back into place underneath the cord so it will be out
of the way while the tool is in use.
DREMEL KEYLESS CHUCK
Use only with black chuck #4486. Other chucks may
!
CAUTION
not allow accessory bit to be tightened fully.
The keyless chuck holds various accessories with
shank sizes 1/32" to 1/8" and is intended for light duty
accessories such as drill bits, sanding drums,
polishing accessories, wire and bristle brushes and
cut-off wheels. The keyless chuck allows you to
change accessories frequently, quickly and easily.
There are some applications which can generate high
forces on the bit or if you are unable to generate
finger tightening pressure sufficient to secure the bit
you must use the supplied wrench to assist in
securing the bit.
Attaching the Keyless Chuck and Accessory Bit
Read and understand the manual for use of the
keyless chuck with the tool.
!
WARNING
Insert and securely tighten the
shank of the accessory well within the jaws of the
chuck. If an accessory is not properly gripped within
the jaws of a chuck it may loosen and fly out during
IDENTIFICATION
RINGS
483
482
1/32"
1/16"
COLLET
COLLET