Internal Vibrators for Slipform Systems | Specifications & Verification

Product Specifications

Technical details and manufacturing context for Internal Vibrators

Definition

Internal vibrators are specialized components of slipform assembly systems used in continuous concrete construction. They consist of vibrating heads connected to electric or hydraulic motors, strategically mounted inside the slipform's formwork. Their primary function is to eliminate air pockets, ensure proper aggregate distribution, and achieve maximum density in freshly placed concrete as the slipform moves continuously forward during construction of walls, barriers, or other vertical/horizontal structures. These vibrators are designed to operate within a range of parameters that must be matched to the specific concrete mix and formwork configuration. Typical vibration frequencies range from 12,000 to 20,000 rpm, with higher frequencies recommended for low-slump concrete. Centrifugal force, which determines the consolidation radius, ranges from 3,000 to 12,000 N. Amplitude varies from 0.5 to 2.5 mm, with higher amplitudes suited for stiff mixes. Head diameters range from 25 to 75 mm, and hose lengths from 3 to 10 m to reach deep forms. Power ratings are typically 1.5 to 3.0 kW, with supply voltages of 220–240 V AC and frequencies of 50–60 Hz. Operating temperature range is -10 to 50 °C, and ingress protection is rated IP54 to IP65 per IEC 60529. Housing materials include aluminum or steel, and total weight ranges from 10 to 30 kg. Materials used in construction include high-carbon steel, stainless steel housing, copper windings (for electric models), and neoprene seals. These parameters are reference ranges; actual values must be confirmed with the manufacturer for the specific model and application. Always verify model-specific specifications and compliance with relevant standards before procurement.

Working Principle

Internal vibrators operate by converting electrical or hydraulic energy into high-frequency mechanical vibrations (typically 8,000-15,000 RPM). These vibrations are transmitted directly into the concrete mass through the vibrator head, causing concrete particles to rearrange and settle under gravitational forces. The vibration reduces internal friction between aggregate particles, allowing entrapped air to escape upward while ensuring complete filling of the formwork and proper bonding with reinforcement.

Common Materials

High-carbon steel, Stainless steel housing, Copper windings (electric models), Neoprene seals

Technical Parameters

Parameter	Typical range	Notes & selection driver
Vibration Frequency	12000–20000 rpm	Higher frequency for low-slump concrete
Centrifugal Force	3000–12000 N	Determines consolidation radius
Amplitude	0.5–2.5 mm	Higher amplitude for stiff mixes
Head Diameter	25–75 mm	Match to formwork spacing
Hose Length	3–10 m	Reach into deep forms
Power Rating	1.5–3.0 kW	Higher power for larger heads
Supply Voltage	220–240 V AC	Single-phase or three-phase
Supply Frequency	50–60 Hz	Compatible with local grid
Operating Temperature	-10–50 °C	Outside range may reduce performance
Ingress Protection	IP54–IP65	Dust and water resistanceIEC 60529
Housing Material	Aluminum/Steel	Steel for durability, aluminum for weight
Weight	10–30 kg	Affects portability

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Vibrator Head Part
Transmits vibrations directly into concrete mass

Material: Hardened steel
Flexible Shaft Part
Connects motor to vibrator head while allowing flexibility

Material: Steel cable with rubber coating
Electric Motor
Generates rotational force converted to vibrations

Material: Copper windings, steel housing
Mounting Bracket Part
Secures vibrator to slipform structure at precise intervals

Material: Carbon steel
Sealing System
Prevents concrete ingress into mechanical components

Material: Neoprene, stainless steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Internal Vibrators.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Slipform Assembly

View system integration details

Manufacturers of Internal Vibrators

Manufacturer profiles associated with Internal Vibrators.

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Frequently Asked Questions

What is the typical vibration frequency range for internal vibrators?

The reference range is 12,000 to 20,000 rpm, with higher frequencies recommended for low-slump concrete. Always confirm the exact frequency for your specific model and application with the manufacturer.

How do I choose the correct head diameter?

Head diameter ranges from 25 to 75 mm and should be matched to formwork spacing. The correct diameter ensures proper consolidation radius. Verify the required diameter based on your formwork design and concrete mix.

What ingress protection rating is typical?

Internal vibrators typically have an ingress protection rating of IP54 to IP65 per IEC 60529, indicating dust and water resistance. Confirm the rating for your specific model to ensure it meets your site conditions.

What materials are used in construction?

Common materials include high-carbon steel, stainless steel housing, copper windings (for electric models), and neoprene seals. These contribute to durability and performance. Verify material specifications with the manufacturer for your application.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 0.5 MPa (formwork pressure during vibration)
other spec:	Concrete slump: 50-150 mm, Vibration frequency: 9000-15000 RPM, Amplitude: 0.5-2.0 mm
temperature:	0°C to 40°C (concrete placement temperature range)

Internal Vibrators

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

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