Pneumatic Vibrators Overview

This document details three types of pneumatic vibrators produced by OLI S.p.A.: Ball-Type (S), Roller-Type (OR), and Turbine-Type (OT). These vibrators are designed for industrial applications such as bins, hoppers, compacting, separation, molding, and foundry processes.

1. Types and Operating Principles

• Ball-Type (S): Uses a rotor with epicycloidal movement inside a steel race. Available in eight sizes, frequency varies with inlet air pressure (2-6 bar). Requires filtered compressed air and a 2/2 way electrovalve.
• Roller-Type (OR): Generates vibration via a roller moving epicycloidally inside a hardened steel ring. Produces very high frequencies with low air consumption relative to force. Suitable for molding, compacting, separation, and foundry applications.
• Turbine-Type (OT): Features a strongly unbalanced turbine on oversized ball bearings, delivering high torque and vibration frequency with large amplitude even at low pressures. Ideal for food, pharmaceutical industries, bins, hoppers, and screening.

2. Key Features and Benefits

• All vibrators are lubrication-free and maintenance-free, ensuring long-term reliability.
• Explosion-proof design suitable for hazardous environments.
• Operating temperature ranges: S and OT types from -20°C to 120°C; OR type from 0°C to 200°C.
• Low noise levels, especially for OT turbine types.
• Activation requires filtered compressed air and a 2/2 way electrovalve.

3. Applications

• Material flow assistance in bins and hoppers.
• Compacting and separation processes.
• Molding dies and foundry operations (primarily OR type).
• Food and pharmaceutical industries (OT type).
• Screens and sieving equipment (OT type).

4. Performance Data and Parameters

• Vibration frequency increases with inlet pressure and mounting rigidity.
• Centrifugal force and air consumption vary by model size and type; detailed numeric data support precise selection.
• Performance data were obtained using a vibrating table with spring support to simulate typical conditions.

5. Dimensions and Installation

Dimensional specifications (in mm and inches) are provided for each vibrator type and size, including mounting hole sizes and weights, facilitating proper integration into industrial equipment.

6. Manufacturer and Certification

Manufacturer: OLI S.p.A., Medolla, Italy.
Contact: Tel +39 0535 41 06 11, Fax +39 0535 41 06 50, Website: www.olivibra.it, Email: [email protected].
Quality certification: UNI EN ISO 9001-2000 certified.

Summary of Critical Information

• Maintenance-free, lubrication-free, explosion-proof vibrators.
• Operating pressure range: 2 to 6 bar (29 to 87 psi).
• Activation requires filtered compressed air and a 2/2 way electrovalve.
• Operating temperature varies by type; OR type supports up to 200°C.
• Wide industrial applications including material handling, molding, foundry, food, and pharmaceuticals.
• Mounting rigidity significantly affects vibration frequency and centrifugal force.

Detailed Overview of Vibrator Types

Roller-Type Vibrators (OR)

Operating Principle: High-frequency vibration generated by a rotor performing epicycloidal motion inside a steel track, with low air consumption relative to force.

Applications: Hoppers, molds, compaction, separation, foundries.

Activation: Requires filtered compressed air and a 2/2 way solenoid valve.

Technical Specifications: Sizes OR 50 to OR 100 with detailed dimensions and weights provided. Maximum vibration frequency up to ~29,500 vpm at 6 bar. Air consumption and vibration force increase with pressure.

Turbine-Type Vibrators (OT)

Operating Principle: Vibration from a strongly unbalanced turbine on oversized ball bearings, producing high torque and frequency with large amplitude at low pressures.

Applications: Food and pharmaceutical industries, bins, hoppers, screens, and sieves.

Activation: Requires filtered compressed air and a 2/2 way solenoid valve.

Technical Specifications: Sizes OT 8 to OT 25 with detailed dimensions provided. Maximum vibration frequencies range from ~8,500 to 42,000 vpm depending on model and pressure. Maintenance-free operation with low air consumption; can use unlubricated compressed air.

General Recommendations and Requirements

• Filtered compressed air and 2/2 way solenoid valve mandatory for operation.
• Operating pressures typically 2 to 6 bar, influencing frequency and air consumption.
• Roller-type vibrators suited for very high frequency with reduced air consumption.
• Turbine-type vibrators provide high torque and amplitude, ideal for food, pharmaceutical, and screening applications.

Manufacturer Information

OLI s.r.l., Via Canalazzo 35, 41036 Medolla (MO), Italy.
Tel: +39 0535 46 400
Fax: +39 0535 46 350
Website: www.olivibra.it
Email: [email protected]