General Notes; Technical Specifications - NetterVibration NHG Series Operating Instructions Manual

1 General notes

Hydraulic external
NHG comply with the EC-machine
regulation 89/392/EEC. The standards
DIN EN 292, part 1 and 2 must be
observed in particular.
These hydraulic vibrators generate
multi-directional oscillations.

2 Technical Specifications

Drive medium:
Clean hydraulic oil DIN 51524/25 or engine oil DIN 51511
Viscosity range:
13 to 200 mm²/s
Recommended range: 15 to 45 mm²/s
Filtration:
≤ 10 μm, NAS 1638 class 10, ISO/DIS 4406 class 19/16
Tank breather filter: ≤ 10 μm
Permitted speed for continuous duty:
NHG 500, NHG 600:
NHG 900:
NHG 3000:
Optimum operating pressure:
120 bar
Environmental temperature:
NHG 500 to NHG 900:
NHG 3000:
Drive medium temperature:
Working temperature:
Lubrication:
NHG 500 to NHG 900:
NHG 3000:
NHG 500, NHG 900 and NHG 3000
have a fixed unbalance. Adjustable
eccentric weight and larger types of
vibrators on request.
Speed and centrifugal force can be
regulated via the oil flow.
Type NHG 600 R (reversible) has an
unbalance that can be adjusted in
seven steps. Adjustment
eccentric is accomplished from outside,
vibrators series
Max. 6000 rpm
Max. 4000 rpm
Max. 3500 rpm
-20°C to 80°C
-20°C to 60°C
-15°C to 90°C
-20°C to 130°C
Lifetime lubricated ball bearings
Oil mist lubrication with SAE 22
of the
The general field of application is the
emptying of bulk material, especially
for transport vehicles such as trucks,
silo busses and ships, also against
bridging and rat holes.
The drive medium is hydraulic oil or
engine oil respectively.
no opening of covers required.
The designations of the hydraulic
external vibrators NHG partly have the
extension (L). The letter indicates that
the drive has a leakage bore.
Noise level:
The noise level is less than 80 dB(A).
Depending on the application a noise
level of S 85 dB(A) may be reached.
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