8
Attaching Accessories
to Handpieces
25, (25H), 28, 28SJ, (28H),35, 35SJ,
43T, 44T, (44HT), and 44TSJ Collet
Handpieces:
To insert or change accessories: insert pin
provided into the pilot hole and through the
spindle hole (turn spindle to align holes). Loosen
chuck nut slightly with wrench provided. Insert
shank of accessory into collet. Tighten chuck nut
with wrench, keeping pin in pilot hole. Test for a
secure hold by pulling on accessory. Remove
pin.
Chuck Type – 30
®
,
30SJ, and (30H)
Handpieces:
These handpieces have a
geared 3-jaw #0 chuck.
Open chuck jaws as far as
necessary with key provided. Insert shank of
accessory fully into the chuck. Tighten jaws with
chuck key until accessory is secure and cen-
tered. If accessory does not run true, reopen
jaws, rotate accessory and retighten. To release
accessory, simply reopen chuck jaws with key
and pull out accessory.
Hammer Type – 15, 15D, & 15SJ
Handpieces:
These handpieces have a threaded spindle.
Thread anvil or stylus into threaded spindle as
far as it will go with clockwise motion. Insert pin
provided into cross hole in anvil or stylus.
Tighten and remove pin. To release accessory,
insert pin into the cross hole and unthread.
Directions for attaching accessories to handpiec-
es vary according to the type of handpiece being
used. Locate the model number of your Foredom
handpiece from the photos on page 7.
Always wait
for the motor, flexible shaft and accessory to come to
a complete stop before changing an accessory.
(Handpieces listed in brackets are for use with
Series TXH and LXH models only.) Attach the
accessory according to the following:
Collet Types –
8, 8D, 25, (25H),
28, 28SJ,
(28H),
35, 35SJ,
43T, 44T, 44TSJ, &
(44HT) Handpieces:
A collet is an interchangeable slotted cylinder
inserted tightly into the interior of a handpiece
to hold a bur or other rotary accessory. The
diameter size of the collet must match the shank
diameter of the accessory.
General Directions: Be sure to use the correct
shank size. The correct shank will fit snugly inside
the collet. Caution: Never tighten a collet unless
an accessory has been inserted. Tightening an
empty collet or inserting an accessory which is too
small or too large may damage the collet.
8, 8D, and 8SJ Handpieces:
To change a collet: slide back the chuck guard and
use one wrench to hold the spindle and the other to
unscrew the chuck nut by turning counterclockwise.
Remove chuck nut to expose collet and pull collet
out of handpiece. Slip new collet in and tighten
chuck nut with wrenches.
To insert accessor y: insert shank as far as possible
into the collet. Tighten chuck nut with wrenches.
Test for a secure hold by pulling on accessory.
Remove wrenches. To release an accessory, follow
the same steps. Accessories can be released when
chuck nut is loosened. If accessory does not run
true, loosen chuck nut, rotate accessory, and
retighten.
25, (25H), 28, 28SJ, (28H), 43T, 44T, 44TSJ &
(44HT) Handpieces:
To change a collet:
1. Insert pin provided into the
pilot hole and through the spindle hole (turn spin-
dle to align holes). Apply wrench and unscrew
chuck nut by turning counterclockwise.
2. Remove chuck nut to expose collet.
3. Pull collet out of
handpiece spindle.
4. Slip new collet in place
and screw on chuck nut.
5. Remove pin.
Pilot or
Spindle
Hole
Collet Accessory
Part No. Size Shank Size
HPL4-3233 3/32″
g
1/16″
HPL4-3234 1/8″
g
1/16″
HPL4-3235 3mm
g
3/32″
HPL4-3236 1/8″
g
3/32″
HPL4-3237 3mm
g
1.6mm
Collet Adapters for
8, 8D, 25, (25H), 28, 28SJ,
(28H), 35, 35SJ, 43T, 44T, 44TSJ, & (44HT)
Handpieces:
let you ‘step down’ to a smaller shank
size accessory.