Foredom H20SJ User Manual

IMPORTANT INSTRUCTIONS

For Foredom®Handpieces H.20, H.20D, and H.20SJ

Collet Replacement Adjustment for Foredom
H.20, H.20D, and H.20SJ Handpieces

Pliers required. 1.5mm hex key included.

Please read instructions before
attaching this handpiece.

Replacement Collet

Instructions for replacing and adjusting the collet
are on the reverse side. If a collet is damaged or
needs replacement, order Collet HP3-1008 which
includes special size hex key for installation.

Repair Service

Factory repairs are done promptly and at
reasonable cost. If you wish, you can send your
equipment directly to the factory marked
“Attention: Service Department”. Be sure to give
your street address. The equipment should be
accompanied by a brief note describing the
problem with the equipment. Estimates will be
made upon request.

Keep a 3/32″shank in the handpiece at all
times during operation and storage.

Never turn collet release lever while

lexible shaft is rotating. The release

f

lever is not intended for use as a brake.

For More Information on Foredom machines,
handpieces, or accessories, contact your local dealer.
When no local dealer is available, visit our website at
www.foredom.com You can write to us at:
The Foredom Electric Company, 16 Stony Hill Road,
Bethel, CT USA 06801 or call [phone].

Always wear proper eye protection
while using this handpiece.

Form 1264 n 7/09 Printed in USA

Adjust the Shaft and Sheath I

the sheath and shaft tip and properly adjust them before

ttaching this handpiece to your Foredom flex shaft tool.

a
The tip of the flexible shaft should extend 3/4

he end of the sheath. Make this adjustment by loosening

t
the set screw in the motor connector and moving the

heath in or out while the motor and shaft/sheath are

s

anging fully extended or laying on a flat surface. When

h
the shaft is adjusted correctly, tighten the set screw in

he motor connector.

t

is unplugged during any maintenance procedure.

t is important to check

″ beyond

lways make sure your power tool

A

Maintenance and Lubrication Bearings in these

handpieces do not need lubrication. Putting oil or grease
into the front or back of these handpieces will damage
their pre-lubricated ball bearings. The H.20D duplex
handpiece connection should be lubricated approximately
every 20 hours of use. Apply 2 drops of oil (p/n MS10005)
in oil hole on rear of duplex connection.

Flexible Shaft Cleaning and Lubrication should be

done every 50 hours of use: Unscrew motor connector
(left hand thread) and remove drive shaft. The flexible shaft
should be thoroughly cleaned with a solvent. Apply a

of Foredom grease (p/n MS10006) to entire length of

film

inner shaft. Reconnect shaft (see shaft and sheath adjust­ment instructions above) and sheath and run motor for ten
minutes before reconnecting handpiece. Turn off motor,
wipe off excess grease from tip of drive shaft and
reconnect to handpiece per instructions.

light

N

ote:Shaft and sheath connection instructions do not apply to

H

.20SJ slip joint handpieces for use with European style motors.

IMPORTANT!

Attach H.20 or H.20D Handpiece to Standard Flexible

haft

he handpiece is easy to remove from the flexible

S

T

shaft. To

remove, simply pull the handpiece off the shaft

nd sheath with a firm grip. To

a

ack end of the handpiece for the keyway. Be sure that the

b
key tip of the flexible shaft is properly lined up with the
keyway slot in the back end of the handpiece and push it
on. If it is not in line, turn the shaft tip or the handpiece to
the correct position.

Operation This Quick Change handpiece has a unique

lever action for collet release to make rapid accessory
changes. Wait for the motor, flexible shaft and accessory
to come to a
open collet and remove or insert a bur.

release lever while flexible shaft is rotating! This can
cause damage and extensive wear to the handpiece.

Turn lever 90˚ to left or right to
open collet and release bur

complete stop before turning the lever to

e-attach,look into the

r

Never turn collet

Center lever to close
collet and secure bur

(

H.20, H.20D, and H.20SJ Collet

P/N HP3-1008

Fig. 1

Lever

1. Unscrew

and remove
nose-cone and
felt washer –
Fig 1.

Felt Washer

Nose-Cone

2. Open the collet completely, with lever

perpendicular (at a 90° angle) to the

Fig. 2

Loosen

Tighten

handpiece –

Soft
Jaw
Pliers

1.5mm
Allen Wrench

Fig. 1.

Spindle

3. Insert 1.5mm Allen wrench (supplied with new

handpiece collet) into the collet lock screw, and grip
the exposed spindle using soft jaw pliers. T
Allen wrench counterclockwise 1/4 turn to loosen
the collet lock screw –

Fig. 2.

urn the

)

Replacement and Adjustment

4. For collet adjust-

Fig. 3

Collet

Collet
Lock
Screw

Spindle

ment procedure,
proceed to
Step 7. To replace
the collet, or to
remove it for clean
ing, unthread the
collet completely by
turning it counter­clockwise –

Fig. 3.

Fig. 4

Collet

5mm (3/16″) distance from end
of Collet to Lock Screw

the collet into the spindle –
screw must be threaded into the collet to a depth of
approximately 5mm, (3/16
the collet –

Fig. 5

Fig. 4.

Collet

1.5mm Allen Wrench

5. When reinstalling

a collet or installing
a new collet, the
collet lock screw
must be in the collet
before you screw

Fig. 5. The collet lock

″) from the back end of

Collet Lock Screw

6.

Fig. 6

Collet

Loosen

Tighten

Screw the collet into the spindle while gripping the
exposed spindle with your fingers. Do not screw the
collet in too far. (Do not close the three slots in

-

the collet.)

Check to
insure that the
collet release
lever is in the
fully open posi-

Fig. 1.

tion –

7. Collet Adjustment Procedure:

Insert a bur with a 2.35mm shank into the collet. If
the bur does not enter the collet, un-screw the collet
counterclockwise until the bur fits in freely, and
reinsert the bur. The collet tension is adjusted by
rotating the

Fig. 7

NO
Slip

Bur

properly when a SLIGHT resistance is felt when mov
ing the bur in and out with the collet release lever in
the fully opened position. Next, grip the spindle with
the soft jaw pliers, and tighten the collet lock screw
securely with the Allen
Wrench –

Fig. 2.

collet clockwise
to tighten, and

clockwise

counter
to loosen –
Fig. 6. The
collet is adjusted

8. Insert a 2.35mm shank bur into the collet, and

close the collet release lever. Using a cloth to protect
your fingers, try to pull the bur out to test the collet’s

holding strength– Fig. 7. If you can remove the bur by
hand, the collet is too loose. If the collet is too loose,
loosen the collet lock screw

Procedure

cannot be removed with the collet closed.

-

above and re-adjust the collet until the bur

Your Foredom Quick Change Handpiece is warrantied against
defective material and workmanship for a period of 90 days
from date of purchase. Please return it to the factory for
inspection and repair. The duplex connection is particularly
susceptible to damage and is not covered by warranty.
Replacement duplex springs are shipped with installation
instructions. This warranty does not cover damage caused in
transit or by accident, misuse, or ordinary wear. ALL IMPLIED
WARRANTIES, INCLUDING BUT NOT LIMITED TO
WARRANTIES OF FITNESS AND MERCHANTABILITY, ARE
HEREBY LIMITED IN DURATION TO A PERIOD ENDING
90 DAYS FROM DATE OF PURCHASE, AND WE WILL
NOT BE LIABLE OR RESPONSIBLE FOR ANY SPECIAL OR
CONSEQUENTIAL DAMAGES. Repair or replacement will be
made at our option if the product is returned post-paid to:

The Foredom Electric Company

16 Stony Hill Road, Bethel CT 06801
All warranty repairs must be done at the factory at the address
above. We will not pay any shipping or transportation charges.
This warranty covers the original purchaser of the product only.
Some states do not allow limitations on how long an implied
warranty lasts, so the above limitation may not apply to you.
This warranty gives you specific legal rights, and you may also
have other rights which vary from state to state.

, refer to

LIMITED WARRANTY

Collet Adjustment