Instructions

Concise installation and operating instructions
for pneumatic linear vibrators series NTS 120 HF to NTS 350 NF
Safety
Make sure that the compressed air is
shut off during installation or during
other work on the vibrator and on the
supply lines. Before starting operation
all hoses must be tightly connected.
A hose coming loose under pressure may
cause injury.
Observe the enclosed drawings.
Alterations to the unit may change
the characteristics of the vibrator or
even damage the unit and will cause
the rejection of any warranty claims.
Screw connections must be checked
after 1 hour and then controlled at regular
intervals (normally each month).
Vibrations can cause loosening of bolted
connections and equipment. This may cause
damage to persons and material.
General Notes
The linear vibrators comply with the EC
machine regulation 2006/42/EC.
The standard DIN EN ISO 12100 has been ob-
served.
The vibrators produce linear vibrations or
shaking movements.
They are used for emptying bunkers, to drive
feeders, screens and vibrating tables. Generally
for loosening, conveying and separating of bulk
materials and for the reduction of friction.
When observing the operating instructions of
the customer they may also be used in food
processing or wet environments.
They can be operated outside, in dusty or wet
environments and, under certain circumstances,
under water or other fluids.
The frequency and the dependent centrifugal
force are determined by the operating pressure.
Drive medium: Clean, filtered (filter ≤ 5µm),
compressed air or nitrogen of 2 to 6 bar (30 to
90 PSI) is required.
Devices suitable for lubrication-free operation
(NTS L) filter ≤ 0,01µm.
Non-filtered air will damage the vibrators.
All vibrators must be mist-lubricated
during operation. Use acid-free and
resin-free pneumatic oil, ISO viscosity
class according to DIN 51519, VG 5
to VG 15.
Vibrators suitable for operation with oil-free and
dry compressed air (NTS L) and/or in areas
with explosion risk according to ATEX (NTS E,
NTS E L) are available on request.
Maximum operating pressure: 6 bar (90 PSI).
Noise level: Depending on the type of vibrator
and air pressure the noise level is 60 to 75
dB(A) (with silencer). If the air pressure is low-
er, the noise level is also lower. In order to
avoid unnecessary noise, the vibrators should
not be operated without a silencer.
Installation
The unit must be fastened to a
clean and level surface with a fas-
tening screw (for screw size and
tightening torque see table).
Use self-locking washers (no spring washers).
Use self-locking nuts or e.g. Loctite 270 against
loosening.
It is strongly recommended to use a stiffening
(U-profile) for the substructure. This stiffening
section should be welded to the object. This
allows optimal transfer of the vibration energy
(avoids lateral vibrations).
Air Supply line: The air resistance increases
with the hose length. The nominal widths in the
table apply for hose lengths of up to 3 m.
Longer supply lines need bigger cross-sections.
A 3/2-way valve (size 1/8” or 1/4”) should be
installed close to the vibrator. For longer
distances, use an additional simple pneumatic
control (see detailed operating instructions).
Air discharge line: The exhaust air can be
discharged through a hose connected directly
to the cover.
In order for the linear vibrator to achieve full
efficiency, the discharge hose must have a
greater nominal cross-section than the supply
hose. The nominal cross-sections given in the
table apply for hose lengths up to 3 m. Longer
supply lines require larger cross-sections. A
silencer should always be fitted at the end of
the discharge hose.