Just like the internal vibrators, the external ones are also based on the principle of the vibration produced by the rotation of an eccentric mass powered by a three phase electric motor.

High speed v ibrat ion (6,000 or 9,000 rpm) is recommended with low-density concretes and in applications where high surface quality is required.

The possibilit y to adjust both the frequency and the speed (from 0 up to 9,000 rpm) guarantees the achievement of the perfect operational frequency. It depends on the type of concrete to vibrate as well as the natural resonant frequency of the mould.

The OLI external electric vibrators are characterised by high operating efficiency and ease of installation. Specially designed attachment devices (quick-coupling clamps) reduce the time required for installing and repositioning.

This vibration system is recommended when:

• High construction elements and narrow walls(partitions, columns, beams) have to be compacted, which are difficult to vibrate with other systems.
• The reinforcement density inside the housing is high.

Benefits

• Sturdy design, made to last
• High operating efficiency
• Easy to install