4. OPERATION, HINTS AND TIPS
DEPTH STOP
Fig.F
The drill spindle is provided with a depth stop. It can be
adjusted using the nut. The drill depth can be read on the
scale division.
CLAMPING THE DRILL
Fig.G
In the drill head of the bench drill, drills and other tools
with a cylindrical shank can be clamped. The moment of
rotation is transferred to the drill by means of the
tension of the three clamping jaws. To prevent the drill
from sliding away, it must be clamped using the toothed
ring wrench. If the drill slides away in the drill holder, a
slight burr occurs on the drill shank, which makes centric
clamping impossible. A burr which occurs in this way
must in any case be removed by grinding
CLAMPING THE WORKPIECE
Fig.H
The drill bench and the footplate of the bench drill are
provided with grooves for fastening clamping tools.
Always clamp the workpiece in the machine clamp or
other clamping tools. In this way you will prevent
accidents and even increase the drilling accuracy
because the workpiece is in a fixed position.
ADJUSTING THE BENCH
Fig.I
The drill bench is fastened to the drill column and can be
adjusted in height after loosening the fastening handle.
Adjust the bench in such a way that there is still enough
space between the top of the workpiece and the point of
the drill. You can also swivel the bench sideways, if you
wish to clamp a workpiece directly onto the footplate.
Fig.J
For slanted drilling and with a slanted supporting surface
of the workpiece the bench can be swivelled. For this
purpose loosen the hexagonal screw (20) on the hinge
point (21) of the bench and remove the centring. Swivel
the bench (19) to the desired position. Then screw
down the hexagonal screw (20) properly using a wrench.
NUMBER OF REVOLUTIONS, SPEED OF
ROTATION, SUPPLY
The supply - the feed motion of the drill - takes place by
hand on the 3-armed drill lever. The speed of rotation is
determined by the number of revolutions of the drill
spindle and by the diameter of the drill. The correct
choice of supply and the number of revolutions of the
drill spindle are the deciding factors for the lifespan of
the drill. The following applies as a basic rule: with a
larger diameter of the drill the number of revolutions
must be adjusted lower; the greater the firmness of the
workpiece, the greater the cutting pressure must also
be. In order not to overheat the drill in this case, the
supply and speed of rotation must be lowered at the
same time. In addition, the drill must be cooled with drill
oil. For thin plates, quite large drillings must be carried
out carefully with little supply and little cutting pressure,
so as to get a precise result and so that the drilling
remains the correct size.
For deep drilling (larger than 2 x the diameter of the drill)
the discharge of chips is more difficult and the
temperature of the drill is higher. Therefore lower the
supply and the number of revolutions and ensure a
better discharge of chips by regularly pulling back the
drill. For drilling with a greater diameter than 8 mm, pre-
drilling must take place, so that early wear of the drill -
main cutting edge can be avoided and so that the drilling
point is not too heavily loaded.
5. MAINTENANCE
Make sure that the machine is not live when
carrying out maintenance work on the motor.
The Ferm machines have been designed to operate over
a long period of time with a minimum of maintenance.
Continuous satisfactory operation depends upon
proper machine care and regular cleaning.
CLEANING
Keep the ventilation slots of the machine clean to
prevent overheating of the engine. Regularly clean the
machine housing with a soft cloth, preferably after each
use. Keep the ventilation slots free from dust and dirt. If
the dirt does not come off use a soft cloth moistened
with soapy water. Never use solvents such as petrol,
alcohol, ammonia water, etc. These solvents may
damage the plastic parts.
LUBRICATION
The machine do not need to be greased. All bearings and
driving gears are maintenance-free and greased for life.
The drill must be cleaned with compressed air or a dry
cloth. It is advisable to clean the blank parts from time to
time with environmentally friendly solvents and to only
grease with acid-free oil or grease.
FAULTS
Should a fault occur, e.g. after wear of a part, please
contact the service address on the warranty card. In the
back of this manual you find an exploded view showing
the parts that can be ordered.
ENVIRONMENT
In order to prevent the machine from damage during
transport, it is delivered in a sturdy packaging. Most of
the packaging materials can be recycled. Take these
materials to the appropriate recycling locations. Take
your unwanted machines to your local Ferm-dealer.
Here they will be disposed of in an environmentally safe
way.
Ferm 5
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2) C-4 / 780 5) A-2 / 820 8) B-3 / 1020
3) C-2 / 1630 6) B-1 / 1830 9) C-1 / 2340
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60 Ferm
