Dremel VRT1 Operating/Safety Instructions Manual page 9

accessory shank is gripped by the collet.
Avoid excessive tightening of the collet nut
when there is no bit inserted.
Shaft Lock
FIG. 4
Button
TIGHTEN
Collet
LOOSEN
Wrench
Installing and Removing Collets
Always use the collet which
matches the shank size of the
accessory you plan to use. Never force a CAUTION
larger diameter shank into a collet. Undersize
shanks will damage the collets and the
accessories will not run true.
Note: Your Rotary Tool kit includes only the 1/8"
collet.
Four different size collets (see illustration), to
accommodate different shank sizes, are
available for your Rotary Tool.
To install a different collet (Fig. 5):
1. Remove the collet nut.
2. Remove the existing collet.
3. Insert the unslotted end of the new collet in
the hole in the end of the tool shaft.
4. Replace collet nut on the shaft.
Collet
FIG. 5
Nut
480
1/8"
Collet
Collet
Nut
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.
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.
Identification
Rings
483 1/32"
Collet
9
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. (Included in
most tool kits on the tool)
Balancing Accessories