The OLI PS pneumatic hammer is a powerful flow aid device for silos and hoppers designed to eliminate bridging and rat-holing in bulk material storage systems. By delivering a strong single impact against the silo wall, the hammer loosens compacted powders and restores normal material flow in applications such as cement silos, flour storage, and chemical powder handling.

It operates through a single internal piston impact against a welded base plate, generating a powerful shockwave that dislodges compacted powders and granular materials.

This solution is ideal for difficult-flow materials such as cement, flour, lime, and other bulk solids.

Key Benefits

• Key Benefits

  • Eliminates material bridging and rat-holing in silos
  • Improves discharge of compacted powders
  • Compact pneumatic design with integrated valve
  • Low compressed air consumption
  • Suitable for ATEX environments

Typical Applications

• The OLI PS pneumatic hammer is widely used in:

  • Cement silos

  • Concrete batching plants

  • Fertilizer storage systems

  • Flour and grain silos

  • Chemical powder storage

  • Plastic pellet handling systems

Technical Specifications (General Range)

• Operating principle: Single impact piston

• Duty cycle: Intermittent

• Working pressure: 3–6 bar (44–87 PSI)

• Working temperature: -20°C to +80°C

• Air supply quality: Class 5.4.1

• Noise level: Up to 125 dB(A)

• Mounting: Welded base plate on silo or hopper wall

• Certification: ATEX II3D available

How It Works

A pneumatic hammer works by releasing compressed air that drives an internal piston. The piston strikes a metal plate mounted on the silo wall, creating a shockwave that breaks compacted material and collapses bridges formed inside the hopper or silo.

This method is highly effective for materials that tend to compact under pressure.

Available Models

• PS40

• PS63

• PS80

FAQ

What is a pneumatic silo hammer?
A pneumatic silo hammer is a flow aid device that uses compressed air to deliver impact shocks to silo walls, helping prevent material buildup.

When should you use a pneumatic hammer?
Pneumatic hammers are used when powders or granular materials form bridges or rat-holes inside silos.

What materials can be handled with a pneumatic hammer?
These devices are commonly used with cement, lime, fertilizers, flour, pigments, and other powders.

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