The Astro Pneumatic ONYX AST-322P is a 6-inch finishing palm sander engineered for professional-grade surface finishing in automotive, woodworking, and industrial applications. Powered by compressed air at 90 PSI, it delivers a free speed of 10,000 RPM with a 5mm (3/16") orbital stroke to produce a smooth, swirl-free final finish. Weighing just 1.5 lbs, this ultra-compact sander is designed for extended use with minimal operator fatigue. Its sealed bearings, composite housing, and low-vibration construction ensure reliable long-term performance in demanding shop environments.
Features
High-powered air motor delivers consistent 10,000 RPM free speed
5mm (3/16") orbital stroke assures a final swirl-free finish
Super lightweight at only 1.5 lbs for reduced operator fatigue
Sealed bearings for extended service life
Built-in speed regulator for precise speed control
Compact and lightweight motor designed for long-term continuous operation
Composite lever housing and rotors for enhanced durability
Special design reduces sound level for a quieter working environment
Low vibration for increased comfort during prolonged use
Easily removable lever for convenient operation and access
Specifications
Pad Size: 6"
Free Speed: 10,000 RPM
Stroke: 5mm (3/16")
Net Weight: 1.5 lbs (0.68 kg)
Overall Length: 6" (15.24 cm)
Air Pressure: 90 PSI
Average Air Consumption: 5.5 CFM
Air Inlet Thread (NPT): 1/4"
Air Hose I.D. Size: 3/8" (10 mm)
Spindle Thread Size: 5/16" x 24
Power Source: Air powered
Includes
1x Astro Pneumatic ONYX 6" Finishing Palm Sander (AST-322P)
1x 6" PU PSA Backing Pad (Astro #4608)
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