10
Before use
The SF 120-A may be used only with the SBP 12
or SFB125 battery.
Before it is used for the first time, it is important
that a new battery is charged for 24 hours in normal
charging mode or up to 12 hours using the condition-
ing charging mode, thus permitting “forming” of the
battery cells to take place.
Battery performance drops at low temperatures. Store
the battery at room temperature when not in use.
Do not store a battery where it may be subjected to high
temperatures, e.g. exposed to the sun, at a window,
behind a car windscreen or on a radiator.
Do not work with the battery until it is run down. The
cells can be damaged if the battery is completely dis-
charged.
Operation
Insert tool insertion and removal
Use the safety catch
as protection against unin-
tentional switching on during transport.
Quick-release chuck
An insert tool can be clamped or released without a chuck
key. When the screwdriver is switched off by the on-off
control switch, the spindle is locked. This is a help when
opening / tightening the quick-release chuck.
Battery removal
Battery release button
If the battery has to be changed, press in the two release
buttons using two fingers and pull the battery out of the
screwdriver.
Battery insertion
Push in the battery as far as it will go. There must be an
audible click.
Only the Hilti SBP12 or SFB125 batteries may be used.
Battery charging
Only the Hilti SFC 7/18, TCU 7/36 or SBC 12 H battery
charger may be used. Please refer to the charger oper-
ating instructions for the charging process.
If the SFB 125 battery is charged in the old SBC 12 H
charger, a loss of capacity must be expected with this
kind of charging. Full capacity of the charger will be
obtained with the SFC7/18 and TCU7/36 chargers.
Speed selection
Two-speed switch
The speed can be selected using the mechanical two-
speed switch, i.e. 1
st
speed: 0–320 r.p.m. or 2
nd
speed:
0–1150 r.p.m. Only change speed when the screwdriv-
er is not running.
Torque selection
Torque clutch setting ring
The release torque (1–10 Nm) is obtained by turning the
setting ring to the desired torque level (setting 1–20).
At the drilling symbol (
), the torque clutch is
blocked and the screwdriver gives its max. torque of
about 21 Nm (stalling torque) at this setting.
Reversing switch
The reversing switch is used to reverse the direction of
rotation of the chuck. A locking device prevents opera-
tion of the switch while the motor is running. The con-
trol switch
is deactivated when the reversing switch
is in the central position.
Speed control
Switch with electronic speed control
The speed can be controlled infinitely from zero to max-
imum by slowly depressing the switch.
Care and maintenance
Care of the tool
The outer casing of the tool is made of impact-resistant
plastic. Sections of the grip are made of an elastomer
material.
Clean the outside of the tool at regular inter-
vals using a slightly damp cloth. Do not use a spray,
steam pressure cleaning equipment or running water
for cleaning. This may negatively affect the electrical
safety of the tool. Always keep the grip surfaces of the
tool free from oil and grease. Do not use cleaning agents
which contain silicone.
Never operate the tool when the ventilation slots
are blocked. Clean the ventilation slots carefully using
a dry brush. Do not permit foreign matter to enter the
interior of the tool.
Take care of your insert tools. Clean off dirt and dust
deposits. Always keep the connection end clean and
lightly greased.
SBP12 and SFB125 batteries
Keep the contact surfaces free of dust and lubricants.
Clean them if necessary using a clean cloth. If the bat-
tery capacity drops below an acceptable level after a long
period of use, we recommend that it be diagnosed by
Hilti.
Printed: 07.07.2013 | Doc-Nr: PUB / 5070589 / 000 / 00
