OLI EWO High Frequency Internal Vibrators with Built-in Converter in UAE
OLI EWO High Frequency Internal Vibrators with Built-in Converter
Efficient concrete consolidation is essential for producing strong, durable, and structurally reliable concrete. Whether constructing high-rise buildings, bridges, industrial floors, or infrastructure projects, removing entrapped air from freshly poured concrete is a critical step that directly influences the quality and lifespan of the finished structure.
Traditional high-frequency concrete vibrators typically require a separate frequency converter, adding extra equipment, cables, and setup time on site. The OLI EWO High Frequency Internal Vibrator Series eliminates this complexity by integrating a compact electronic frequency converter directly into the power cable. This innovative design allows the vibrator to connect directly to a standard 115 V or 230 V single-phase power supply, providing professional high-frequency concrete compaction without the need for an external converter.
At Liberty Enterprises, we supply genuine OLI EWO High Frequency Internal Vibrators in UAE, delivering advanced concrete consolidation solutions for contractors, ready-mix concrete producers, precast manufacturers, civil engineering companies, and infrastructure developers across the GCC.
Model Specifications
| Model | Frame Type | Outlets (No.) | Supply Electric Cable (m) | Weight (kg) | Input Voltage & Frequency | Input Current (A) | Input Power (kW) | Output Voltage & Frequency | Output Current (A) | Output Power (kVA) |
|---|---|---|---|---|---|---|---|---|---|---|
| CMM 11 | Handle | 1 | 3.5 | 17 | 230V, 1ph, 50Hz | 2.5 | 0.5 | 42V ±10%, 3ph, 200Hz | 11 | 0.8 |
| CMM 15 | Handle | 1 | 3.5 | 25 | 230V, 1ph, 50Hz | 6 | 1.1 | 42V ±10%, 3ph, 200Hz | 14 | 1.0 |
| CMM 25 | Frame | 2 | 3.5 | 34 | 230V, 1ph, 50Hz | 10 | 1.8 | 42V ±10%, 3ph, 200Hz | 25 | 1.8 |
| CMT 25 | Frame | 2 | 3.5 | 33 | 400V, 3ph, 50Hz | 5 | 2.8 | 42V ±10%, 3ph, 200Hz | 25 | 1.8 |
| CMT 35 | Wheeled | 3 | 5.0 | 41 | 400V, 3ph, 50Hz | 6 | 3.3 | 42V ±10%, 3ph, 200Hz | 36 | 2.6 |
| CMT 55 | Wheeled | 3 | 5.0 | 50 | 400V, 3ph, 50Hz | 9 | 5.0 | 42V ±10%, 3ph, 200Hz | 55 | 4.0 |
| CMT 85 | Wheeled | 4 | 5.0 | 56 | 400V, 3ph, 50Hz | 12 | 6.6 | 42V ±10%, 3ph, 200Hz | 85 | 6.2 |
What Are High Frequency Internal Vibrators with Built-in Converters?
High-frequency internal vibrators, commonly referred to as concrete poker vibrators, needle vibrators, or immersion vibrators, are used to remove trapped air from freshly poured concrete by transmitting controlled vibration directly into the concrete mass.
The EWO Series differs from conventional systems because its electronic frequency converter is built into the power cable. This compact integrated design converts standard mains power into the high-frequency electrical supply required by the vibrator head, eliminating the need for a separate electromechanical converter.
The result is a compact, portable, and easy-to-use concrete vibration system that delivers professional compaction performance while simplifying job-site operations.
Why Choose the OLI EWO Series?
Construction projects demand equipment that is reliable, efficient, and easy to deploy. The EWO Series has been engineered specifically for contractors who require professional high-frequency concrete vibration without carrying additional converter equipment.
Because the electronic converter is integrated into the supply cable, operators can connect the vibrator directly to a standard power outlet and begin working immediately. This significantly reduces setup time while improving mobility across the construction site.
The integrated system also maintains a constant operating frequency of 12,000 vibrations per minute (vpm), allowing the vibrator to generate high centrifugal force for consistent concrete consolidation throughout the pour.
Key Features of OLI EWO High Frequency Internal Vibrators
Built-in Electronic Frequency Converter
The integrated electronic converter allows the vibrator to connect directly to a standard 115 V or 230 V single-phase power outlet, eliminating the need for an external frequency converter.
Constant High-Frequency Performance
The system maintains a stable output frequency of 12,000 vibrations per minute, ensuring consistent centrifugal force and uniform concrete consolidation throughout the entire pouring process.
High Centrifugal Force
The vibrator head incorporates a high-frequency electric motor capable of generating strong centrifugal force, enabling rapid removal of trapped air and efficient compaction even in dense concrete mixes.
Continuous Duty Operation
Designed for Continuous S1 Duty, the EWO Series is suitable for prolonged use on large construction projects without interruption.
Applications Across UAE Industries
Benefits of High-Frequency Concrete Vibration
Concrete naturally traps air during mixing and placement. Without proper consolidation, these air pockets remain inside the structure and can result in:
- Honeycombing
- Reduced compressive strength
- Poor bond around reinforcement
- Increased permeability
- Surface imperfections
- Reduced long-term durability
The OLI EWO Series produces high-frequency vibration that rapidly removes entrapped air without causing segregation of the concrete mix. This creates dense, homogeneous concrete with improved structural integrity and a high-quality surface finish.
Engineered for Professional Construction Sites
The EWO Series has been developed for continuous operation in demanding construction environments where reliability and productivity are essential.
Its compact integrated converter reduces the amount of equipment required on site while maintaining the performance expected from a professional high-frequency concrete vibrator.
Designed for civil engineering, commercial construction, and infrastructure projects, the EWO range delivers dependable vibration performance even when working with dense or highly consistent concrete mixes.
Why Contractors Choose the EWO Series
The EWO range is particularly valued because it combines the performance of a professional high-frequency vibrator with the convenience of a plug-and-play system.
Contractors benefit from:
- Faster site setup
- Fewer components to transport
- Reduced cable clutter
- Consistent vibration performance
- Easy handling
- Reliable continuous operation
- Lower maintenance requirements
- High productivity on demanding projects
These advantages make the EWO Series an excellent solution for both small construction sites and large infrastructure developments.
Why Buy OLI EWO Internal Vibrators from Liberty Enterprises?
Liberty Enterprises supplies genuine OLI concrete vibration equipment throughout the UAE, supporting contractors, infrastructure companies, precast manufacturers, and ready-mix concrete producers with professional concrete consolidation solutions.
When you choose Liberty Enterprises, you benefit from:
✔ Genuine OLI products
✔ Expert technical guidance
✔ Assistance in selecting the correct vibrator model
✔ Fast delivery across the UAE
✔ Reliable after-sales support
✔ Complete concrete vibration system solutions
Whether you’re working on commercial buildings, infrastructure projects, precast production, or industrial construction, our team can help you select the right OLI EWO vibrator for your application.
Related Categories
Explore our complete concrete vibration range:
- OLI VH Internal Electric Concrete Vibrators
- OLI MVE-HF External Electric Concrete Vibrators
- OLI CM Frequency & Voltage Converters
- OLI Pneumatic Internal Vibrators
- Concrete Surface Preparation Equipment
- Dewatering Pumps
- Pneumatic Breakers
Frequently Asked Questions
The EWO Series features a built-in electronic frequency converter integrated into the power cable, allowing it to connect directly to a standard 115 V or 230 V single-phase power supply without requiring a separate external converter.
They are ideal for foundations, columns, beams, walls, industrial floors, bridges, tunnels, precast concrete, and other reinforced concrete structures requiring reliable high-frequency compaction.
Yes. The EWO Series is rated for Continuous S1 Duty and is engineered for prolonged use on demanding construction projects.
The integrated inverter is protected against overcurrent, overvoltage, excessive temperature, and short circuits. It also features an IP66-rated converter enclosure, an IP68-rated vibrator head, and an LED fault indicator for diagnostics.
Liberty Enterprises supplies genuine OLI EWO High Frequency Internal Vibrators across the UAE, providing technical support, product selection assistance, and dependable after-sales service for construction, infrastructure, and precast applications.