Vibrator Head: Diameter 25-80 mm, Length 300-600 mm

Component Specifications

Definition

The vibrator head is a critical component in internal vibrators used for concrete consolidation. It consists of a hardened steel casing containing an eccentric weight mechanism driven by a flexible shaft or electric motor. When rotated at high speeds (typically 9,000-15,000 RPM), the eccentric weight creates centrifugal force that generates high-frequency vibrations. These vibrations are transmitted through the head's surface into the concrete mix, causing particles to rearrange and air bubbles to rise to the surface. The head's design features include specific diameter-to-length ratios, hardened steel construction for wear resistance, and sealed bearings to prevent concrete ingress.

Working Principle

The vibrator head operates on the principle of forced vibration through rotational unbalance. An eccentric mass inside the head rotates at high speed, creating centrifugal force that causes the entire head to vibrate radially. This vibration energy is transferred to the surrounding concrete through direct contact, reducing internal friction between aggregate particles and allowing them to settle into a denser configuration while entrapped air escapes upward.

Materials

High-carbon chromium steel (AISI 52100 or equivalent), through-hardened to 58-62 HRC; stainless steel variants for corrosive environments; tungsten carbide tips for extreme abrasion resistance; nitrile or viton seals for bearing protection.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	300-600 mm
Weight	1.5-8 kg
Diameter	25-80 mm
Amplitude	0.5-2.5 mm
Frequency	9,000-15,000 RPM
Connection Type	Threaded, quick-couple, or bayonet
Centrifugal Force	500-5,000 N

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

Standards

ISO 18650, DIN 45635, ASTM C138

Parent Products

This component is used in the following industrial products

Internal Vibrators

Motorized devices embedded within slipform concrete forms to consolidate fresh concrete through vibration.

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Engineering Analysis

Risks & Mitigation

Bearing failure due to concrete ingress
Fatigue cracking from cyclic loading
Overheating from continuous operation
Thread damage at connections
Amplitude reduction from wear

FMEA Triads

Trigger: Inadequate sealing allowing concrete paste into bearings
Failure: Bearing seizure leading to complete vibration loss
Mitigation: Use double-lip seals with grease purging systems; implement regular maintenance schedules

Trigger: High-cycle fatigue from continuous operation beyond design limits
Failure: Crack propagation in housing leading to structural failure
Mitigation: Implement duty cycle monitoring; use fatigue-resistant steel alloys; apply shot peening to critical surfaces

Trigger: Abrasive wear from aggregate contact
Failure: Reduced amplitude and inefficient consolidation
Mitigation: Apply tungsten carbide wear bands; use hardened steel with minimum 58 HRC; implement rotation during extraction

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Diameter: ±0.5 mm, Length: ±2 mm, Frequency: ±5% of rated value, Dynamic balance: G6.3 grade per ISO 1940

Test Method

Vibration amplitude measurement per ISO 18650, hardness testing per ASTM E18, fatigue testing with minimum 10⁷ cycles, seal effectiveness test with concrete slurry immersion

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

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Inspection readiness

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Supplier transparency

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Manufacturers of Vibrator Head

Manufacturer profiles associated with Vibrator Head.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Seal Groove

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Frequently Asked Questions

What is the optimal frequency range for concrete vibrator heads?

Most vibrator heads operate between 9,000-15,000 RPM. Higher frequencies (12,000+ RPM) work best for stiff mixes with small aggregates, while lower frequencies (9,000-12,000 RPM) are suitable for standard concrete mixes.

How do I prevent damage to vibrator heads during operation?

Avoid hitting reinforcement bars, operate continuously when immersed in concrete, withdraw slowly to prevent air pockets, and clean thoroughly after each use. Regular inspection for wear and proper lubrication of connections are essential.

Can vibrator heads be used with different power sources?

Yes, vibrator heads are compatible with flexible shaft drives (gasoline or electric motors) and direct electric vibrators, provided the frequency and torque specifications match the power source capabilities.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Vibrator Head