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SMT 30 AER-14/24.G1 / 01.01.2021 / V01.03-EN
Technical manual
Noise emission values in accordance with the DIN
EN 60745-1 standard:
Vibrations:
Note:
The measured values listed above depend on the
materials and operating procedures used and may
therefore be exceeded under other operating
conditions.
Using the machine to create bevels with a width
greater than that permitted will result in a
disproportionally large reduction in the machine’s
on-time and the service life of the indexable carbide
inserts. The vibration and noise emission values
will increase accordingly.
To prevent overloading the machine and to avoid
operator fatigue it is very important to observe the
maximum power-on periods especially when
machining wide bevels or high-strength materials.
Value Un-
certainty
Noise emission [dB (A)]
Emission sound pressure
level LpA 90 3
Peak emission sound pres-
sure level at workplace
(during milling operation)
LpGpeak 105 3
Sound power level LWA 101 3
Total vibration value
(tri-axial vector sum)
Appropriate to
DIN EN 60745:
Measured vibration emission
value
ah = 4,0 m/s²
Work process:
- 45° milling head
- 5 mm bevel width (C) in
12 mm steel sheet S 355 Uncertainty
K = 1,5 m/s²
Power-on time (POT):
To avoid damaging the machine, it is essential to
be monitor how long the machine has been
operating continuously (‘power-on time’).
All electric brushed motors generate large amounts
of heat in the rotor and stator. Although the machine
is fitted with a fan cooler that dissipates the heat
produced, if the machine is subjected to extreme
loads (e.g. milling large bevels, very hard or tough
materials) and/or is run continuously for a long
period of time, the cooling system may not be able to
cope with the amount of heat generated. If the
operator continues to use the machine, the rotor
(armature) may overheat to such an extent that the
winding insulation melts causing a short circuit.
(C=bevel width, POT=power-on time)
The power-on time is always expressed as a
percentage of one hour.
Example:
If the power-on time is specified as 50 %, then you
can use the machine to mill bevels for a maximum of
30 min. in an hour and must then leave the machine
to cool for 30 min.. If the machine is subjected to
heavy loads, the power-on time might be 20 %,
which means it can be used for 12 min. in any hour
and must be left to cool for 48 min.. Before
completely switching off the machine, we
recommend running the machine for one or two
minutes in idle mode (unloaded) so that fan can
continue to draw cool air through the machine.
Do not overload the machine!
The machine can become overloaded if, for
example, it continues to be used even though the
bevel being cut is too large for the material being
milled, or if the cutting inserts have become blunt
and therefore unable to penetrate the material.
Such conditions can lead to large machine vibrations
or even machine breakdown if the armature in the
motor is bent to such an extent that the rotor and
stator rub against each other, overloading the
windings and blowing the motor.
To prevent this sort of damage when milling large
bevels and/or hard materials, never try to machine
the bevel in a single pass, always use multiple
passes, and do not forget to change the carbide
inserts before they become blunt or worn.
Material strength C max. POT max.
Aluminium, copper, brass 8mm 80%
Steel up to 400 N/mm² 6mm 50%
Steel up to 600 N/mm² 6mm 40%
Steel up to 900 N/mm² 6mm 30%
Stainless steel 3mm 20%
