High Frequency Electric Converter & Vibrator Shafts

EWO High Frequency Internal Vibrators with Built-in Converter

High Frequency Internal Vibrators with Built-in Converter OLI Italy

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EWO Electric High-Frequency Concrete Vibrators are equipped with a small electronic frequency converter integrated into the power cable, suitable for connection to a single-phase mains socket. This line of vibrators is characterised by high centrifugal force, constant speed and increased wear resistance which makes it suitable even for the most consistent types of concrete and for continuous use. The shaft is supported by four bearings for extra heavy-duty work requirements. EWO Electric High-Frequency Internal Vibrators, which are directly connected with the mains supply at 230 V, 50/60 Hz, consist of a tractor unit called vibrator head, 10 metres of electric cable and of 5 metres internally reinforced operating hose. The high centrifugal force is generated by a high-frequency electric motor integrated into the vibrator head. Vibrators are equipped with a keypad (IP 66 protection) in polyamide, complete with switch protected by a reinforced gasket resistant to continuous use and wear. A small electronic converter, complete with switch, is integrated into the power cable. The inverter is housed in a sturdy, dust-tight, waterproof (IP 66) aluminium casing. It is protected against overload, overvoltage, excess temperature and short circuits. A led signals with different colours accurate functioning or the presence of a fault. Each colour corresponds to a specific fault. All electronic components are covered with a resin so as to protect them from vibration, humidity and any shock. Function: Highly increased compacting capacity enables quick removal of air bubbles without any segregation of the elements composing the mass. The result is mechanically strong, durable and homogeneous concrete strength. The comprehensive range satisfies the requirements of both private and civil engineering sector. Features: Head diameter: 38 ~ 65 mm (1.5 ~ 2.5 in) Amplitude: 1.2 ~ 3 mm (0.04 ~ 0.1 in) Efficiency diameter: 45 ~ 110 mm (1.7 ~ 4.3 in) Nominal frequency: 12,000 vib/min Centrifugal force: 1,700 N ~ 7,330 N Ergonomic casing Lightweight (3 kg) Tropicalised electronic panel Ambient temperature: -20 ~ 40 °C (-4 ~ 104 °F) Thermal protection Exclusive sealing system Hardening treatment for EWO38C; chrome plating for EWO50C, EWO59C, EWO65C Vibration needle head protection class IP68

  • Compact, lightweight solution
  • Safe and reliable
  • Easy to handle
  • Vibrators helps in surfacing of air bubbles captured in the concrete; displacement of aggregates resulting in a reduced cavity and giving high density and perfectly even material; adhesion of the concrete to the reinforcement armature bars or any inner structural inserts.
  • Benefits of using vibrators on concrete: high mechanical strength, low level porosity and therefore permeability to water and aggressive agents contained therein, no cracks inside the cement and near the reinforcement armature bars, completely filled formwork, longer life cycle of the concrete, high aesthetic results
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