Dynabrade 52221 Angle Air Die Grinder 0.5 Hp 18000 Rpm

Product Description

The DYNABRADE 52221 is a 1/4 inch angle air die grinder designed for precision grinding, deburring, and surface finishing in industrial and trade environments. Powered by compressed air at 90 psig operating pressure, it delivers up to 18,000 RPM through a lever-style throttle, providing responsive speed control during close-tolerance work. At 0.5 HP and 2 pounds, the tool balances power and maneuverability for sustained use. Rear exhaust keeps airflow directed away from the work surface and operator. The 52221 ships with 1/4 inch and 6 mm collet inserts and accepts optional collet sizes to expand compatibility with a range of die grinder bits and carbide burrs.

The 52221 suits applications in metal fabrication shops, automotive service, aerospace maintenance, and general mechanical trades where controlled material removal is required. Its angle-head configuration allows access to recessed surfaces, welds, and cavities that straight die grinders cannot reach. The lever throttle design gives the technician precise feather control, making it well suited to deburring cast components, blending weld seams, and porting work on engine components. Both professional machinists and skilled trades workers routinely use angle air die grinders of this type in production and repair settings.

Key Features

• 18,000 RPM rated speed for efficient material removal
• 0.5 HP air motor with 90 psig operating pressure
• Lever-style throttle for precise speed feathering
• Rear exhaust directs airflow away from the work area
• Includes 1/4 inch (50013) and 6 mm (50016) collet inserts
• Accepts optional 1/8 inch (50065), 3/8 inch (50014), and 8 mm (50039) collet inserts
• CE Certified and EAC Certified

Compatibility

The 52221 accepts the included 1/4 inch (50013) and 6 mm (50016) collet inserts. Optional collet inserts for 1/8 inch (50065), 3/8 inch (50014), and 8 mm (50039) shanks are available separately and fit this tool directly.

Installation Notes

Installation and operation of air die grinders should be performed by qualified personnel familiar with pneumatic tool safety practices. Before connecting to an air supply, verify the line pressure does not exceed the rated 90 psig operating pressure and ensure the air supply is dry and filtered. Always install the correct collet insert for the accessory shank diameter being used and confirm the collet is fully tightened before operation. Wear appropriate PPE including eye protection and hearing protection during use.