90° Air Angle Die Grinder 1/4" Pneumatic Mini Tool

Compact 90° Air Angle Die Grinder for Precise Finishing

This 90° Air Angle Die Grinder is a compact pneumatic tool designed for accurate grinding, polishing, deburring and light engraving work. Constructed from durable metal with a wear-resistant body and precision-machined internal gears, it delivers consistent performance under regular workshop use. The right-angle head allows better access into tight spaces, while the rear exhaust directs air and oil away from the work surface to help keep the area cleaner.

With a free speed of up to 25,000 RPM and high concentricity, this grinder runs smoothly with low vibration and controlled noise levels. It connects to a standard 1/4" air inlet and accepts both 3 mm (1/8") and 6 mm (1/4") shank accessories, making it compatible with a wide range of sanding discs and rotary abrasives. Operating at 90 PSI (6.2 bar) with an approximate air consumption of 4 CFM, it integrates easily into most shop air systems.

The included accessory set lets you start work immediately: a roll-lock disc pad, wool disc, flap disc, non-woven disc, and four aluminum oxide discs (80/120/180/240 grit) for stages from rough stock removal to fine surface finishing. Suitable for mold work, metal fabrication, automotive refinishing, jewelry, crafts, and electronics, this tool supports both detailed work and general surface preparation.

Why It's a Smart Choice

• Right-angle access - 90° head improves reach into confined or awkward areas for more controlled finishing.
• Stable, high-speed operation - Precision gears and bearings support up to 25,000 RPM with reduced vibration.
• Ready-to-use kit - Supplied with multiple discs and pad so you can grind, polish and finish with one setup.

FAQ

Q: What air compressor do I need?
A: For best results, use a compressor that can supply at least 4 CFM at 90 PSI (6.2 bar), with a 1/4" air hose connection.

Q: Which shank sizes does this grinder accept?
A: The collet supports both 3 mm (1/8") and 6 mm (1/4") shank accessories, covering most common rotary abrasives.

Q: What materials can I work on?
A: It is suitable for metal, plastic, some woods, glass, stone and mold surfaces, depending on the abrasive used and correct operating technique.

Q: Is lubrication required?
A: Yes. For long service life, use clean, dry air and apply pneumatic tool oil regularly through the air inlet or an in-line oiler.