HARPERIZING/
CENTRIFUGAL FINISHING

• Faster processing time compared to conventional tumbling

• Superior surface finishes with minimal material loss

• Ability to reach recessed areas and intricate geometries

• High consistency in part quality

• Cost-effective for high-volume production

• Produces smoother surfaces and aggressive edge radiusing

• Excellent for both metal and plastic parts

1. Preparation: Parts are placed into a centrifugal finishing machine.

2. Abrasive Application: Abrasives are applied to the parts.

3. Centrifugal Action: High-energy centrifugal force is activated, polishing and deburring the parts.

4. Finishing: The parts are removed and cleaned for final inspection.

Harperizing/Centrifugal Finishing is used across a variety of industries, including:

• Aerospace: For turbine blades, aerospace components requiring precise finishes

• Medical: Ideal for medical instruments, implants, and devices demanding a high level of cleanliness

• Automotive: For engine components, suspension parts, and cosmetic exterior pieces

• Firearms: To smooth and polish firearm components

• Electronics: Small, intricate parts requiring surface refinement

Common parts include:

• Components requiring high cosmetic finishes

• Parts requiring low-micro finishes for precision

• Aggressive edge radiusing

• Material removal for both metal and plastic

• Cleaning recessed areas for better surface quality

Due to the size limitations of Harperizing/Centrifugal Finishing machines, parts generally range from .010” to 2” in size.

This unique finishing process deburrs and polishes parts in a much shorter period of time compared to conventional tumbling and vibratory finishing. Centrifugal finishing is a great alternative to tumbling and vibratory finishing because of the G forces produced, which allows access to areas where conventional methods cannot reach. Often referred to as “high-energy tumbling” or harperizers, these rapid finishing machines excel in polishing, deburring, and deflashing both metal parts and various types of plastics. The process results in high-quality finishes in shorter cycle times, making it efficient and cost-effective for manufacturers.ption