High frequency external electric vibrators
External high-frequency electric vibrators are used on construction sites and in prefabrication companies to obtain high-quality products (exposed concrete), with excellent aesthetic results and excellent resistance to atmospheric agents.
The vibration is transmitted to the concrete indirectly via the formwork or mold walls.
Like the internal vibrators, the external ones are also based on the principle of vibration produced by the rotation of eccentric masses, set in motion by a three-phase electric motor.
Low vibration speeds (3,000 rpm) are used above all in the presence of high-density, low-liquid concretes, as they allow for rapid movement of the aggregates.
High speeds (6,000 rpm or 9,000 rpm) are recommended with low density concretes and in applications where high surface quality is required.
The possibility to regulate both the frequency and the speed (from 0 up to 9.000 rpm) guarantees the achievement of the perfect operating frequency. The adjustment depends on the type of concrete to be vibrated and on the natural resonance frequency of the mould.
OLI external electric vibrators are characterized by their high operating efficiency and ease of installation. Specially designed fasteners (quick fit vises) reduce the time required for installation and repositioning.
This vibration system is recommended when:
› Tall construction elements and narrow walls (beams, tunnel segments, prefabricated panels, etc.) need to be compacted, as these are difficult to vibrate with other systems.
› The reinforcement density inside the formwork is high.
Mini plant for 4 vibrators:
Composed of:
n.4 Vibrating heads -10A0 / 42V / 200Hz + 15mt cable + 32A plug
n.4 Formwork clamp for steel beams mod. CLS00102
n.1 Three-phase converter 3.5 Kw - 3 sockets 230/400V 50Hz
n.1 Multiple panel (42V / 200Hz)
Mini plant for 6 vibrators:
Composed of:
n.6 Vibrating heads -10A0 / 42V / 200Hz + 15mt cable + 32A plug
n.6 Formwork clamp for steel beams mod. CLS00102
n.1 Three-phase converter 5.5 Kw - 3 sockets 230/400V 50Hz
n.1 Multiple panel (42V / 200Hz)
Technical specifications
Working moment: 1.47 kg/cm
Unbalance: 0.74 kg/cm
Centrifugal force: 294 kg
Rated voltage: 42V
Absorbed power: 0.27 kW
Current: 5A
Power factor: 0.73
The/in: 2
Dimensions: 130x213x135 mm
Weight: 4.6 kg