Air Needle Scaler and Air Chisel Scaler

Air Needle Scaler

(Also known as Pneumatic Needle Gun / Needle Descaler)

An Air Needle Scaler is a pneumatic surface preparation tool used for removing rust, paint, weld slag, scale, and corrosion from metal, concrete, or stone surfaces. It operates on compressed air, driving a set of hardened steel needles that repeatedly strike the work surface, chipping away coatings or contaminants without damaging the underlying material. Needle scalers are commonly used in shipyards, fabrication shops, foundries, and construction sites for cleaning and maintenance of steel structures.

Working Principle

1. Air Supply: Compressed air drives a reciprocating piston inside the tool.

2. Needle Movement: The piston’s motion is transferred to a bundle of needles housed in a front tube.

3. Impact Action: Each needle delivers rapid impacts (3,000–4,000 bpm) to the surface.

4. Surface Cleaning: The vibrating needles evenly dislodge rust, paint, or slag from irregular surfaces.

Key Features

• Multiple Needles (Usually 12–28 pcs): Efficient cleaning across broad or uneven areas.

• Self-Adjusting Needles: Automatically conform to curved or irregular surfaces.

• High Impact Rate: Ensures quick material removal.

• Optional Low-Vibration Design: Improves operator comfort for extended use.

• Interchangeable Needle Sets: Stainless steel, brass, or chisel-tipped needles for different materials.

Applications

• Rust and paint removal from ship hulls, bridges, and tanks.

• Cleaning weld seams, castings, and metal frames.

• Surface prep before coating or galvanizing.

• Maintenance of steel structures, pipelines, and offshore rigs.

Air Chisel Scaler

(Also known as Pneumatic Chisel Hammer / Air Scraper / Flux Chipper Type Scaler)

An Air Chisel Scaler is a pneumatic percussive cleaning tool that uses a single chisel or scraper tip instead of needles. It delivers high-impact blows for removing heavy coatings, slag, rust, and weld residues from flat or solid metal surfaces. It is best suited for localized or concentrated cleaning tasks that require aggressive impact.

Working Principle

1. Compressed air drives the internal piston to strike the chisel holder.

2. The chisel delivers repeated impacts (up to 4,000 bpm) to break and remove materials.

3. Continuous operation allows fast cleaning of dense or layered coatings.

Key Features

• Single Replaceable Chisel Tip: Flat, round, or pointed shapes for varied cleaning needs.

• High Impact Energy: Greater penetration for heavy deposits.

• Compact and Durable: Handles tough working conditions in construction or shipyard applications.

• Optional Shock-Reduced Handle: Reduces vibration and operator fatigue.

Applications

• Removal of weld slag, scale, and corrosion from heavy steel.

• Cleaning castings, tanks, or ship structures.

• Removing hardened paint or epoxy layers.

• Surface preparation before welding or coating.