1) Make sure not to extend the maximum speed specified by a manufacturer or
distributor.
2) Large burs, even being operated below maximum speed, will vibrate.
Speed should be reduced immediately to prevent damage to a bur, a handpiece
or operator.
3) Be sure to insert the bur shank all the way, until it touches the back of the collet
chuck, then tighten a collect chuck. If the bur is used not inserted completely,
it is very dangerous.
We do not guarantee its quality in case of users’ carelessness.
11. Warranty
Notice
This chart is a general guide for a maximum speed with conventional burs.
The allowable rotation speed can be slightly different, depending on bur materials
or types.
Replacement cycle of carbon brushes will depend on working hours and loadi-
ng conditions.
Replacement cycle of collet chuck will depend on working hours and loading
conditions.
1) After turning off the power, remove the carbon housing cover and motor cord
from the motor.
2) Take off carbon brush bolts, wi a screw) and then remove worn-out
carbon brushes.
3) Replace with new carbon brushes carefully
4) Assemble the handpiece.
5) After running the hand piece under no load state around 20,000 rpm for 30
minutes, you may then use.
1) A hand cap and a spindle assembly will be disassembled by turning the hand cap
countclockwise with a chuck wrench.
2) The collet chuck is disassembled by turning it countclockwise with a chuck joint
wrench and the chuck wrench.
3) Replace the old collet chuck with a new one and then assemble the handpiece.
4) Run the handpiece under no load state and confirm proper replacement, then
use.
1) Disassemble the hand cap and a spindle assembly from the front part of the
handpiece.
2) If a C-ring is picked out of the front chuck housing, ball bearings and other
supporting parts will be disassembled.
3) Assemble other supporting parts and replace to new ball bearings sequentially,
install the C-ring again.
4) Assemble the hand cap and the spindle assembly.
5) Run the handpiece under no load state and confirm proper replacement, and
then use.
8. Maintenance
8. Maintenance
9. Specification
Control Box
Input
(Vdc)
Input
(V)
12
Handpiece
SH300
Adaptor
Output
(Vdc)
Power
(W)
Weight
(g)
Weight
(g)
Dimension
Dimension
W
D
H
12
24
225
65
147
25
Ø
L
Torque
(Ncm)
Max.Speed
(rpm)
DC12
2.4
30,000
143
22
129
MH20
DC12
2.2
20,000/
30,000
144
21
131
H200
DC12
2.7
30,000
142
22
129
Input
Output
100~240V, 50/60Hz
12Vdc/2A
MINI cro
Website : www.saeyang.com
E-mail : [email protected]
(Galsan-dong), 348, Seongseo-ro, Dalseo-gu, Daegu, 42697, Korea
TEL +82-53-582-9001 FAX +82-53-581-9003
May, 2018
Ver. 1-E
201805-MINIcro-EN-01
8-1. Replacing carbon brushes
8-2. Replacing collet chuck
8-3. Replacing ball bearings
10. Allowable rotation speed
