Dynabrade 53811 Straight Air Die Grinder 1/4 Inch Collet

Product Description

The DYNABRADE 53811 is a straight air die grinder designed for precision grinding, deburring, and surface finishing tasks in industrial and trade environments. Running at 20,000 RPM with 0.7 horsepower and powered by 90 psi compressed air, it delivers consistent cutting performance for ferrous and non-ferrous materials. The grinder uses a 1/4 inch collet insert and features a lever-style throttle for controlled operation. At 2.2 pounds, it is lightweight enough for extended use without excessive operator fatigue. Front exhaust directs air away from the work surface, keeping the work area cleaner during operation.

The 53811 is suited for metalworking, fabrication, and maintenance applications in manufacturing, automotive, and general industrial settings. It accepts the included 1/4 inch collet insert (50013) and is also compatible with optional collet inserts in 1/8 inch (50065), 3/8 inch (50014), 6 mm (50016), and 8 mm (50039) sizes, giving technicians flexibility across a range of mounted points, carbide burrs, and abrasive accessories.

Key Features

• 20,000 RPM free speed for efficient material removal
• 0.7 hp motor provides strong, consistent power output
• Lever throttle for precise speed and cut control
• Front exhaust design directs airflow away from workpiece
• Lightweight at 2.2 pounds for reduced operator fatigue during extended use
• CE Certified and EAC Certified for international compliance

Compatibility

Includes 1/4 inch collet insert (50013). Accepts optional collet inserts: 1/8 inch (50065), 3/8 inch (50014), 6 mm (50016), and 8 mm (50039).

Installation Notes

This tool is installed and operated by machinists, fabricators, and maintenance technicians working with compressed air systems. Before connecting, verify the shop air supply is regulated to 90 psi and that the air line is fitted with a properly sized inline filter and lubricator to protect the motor. Do not exceed the rated air pressure, as overpressure can damage internal components and increase RPM beyond safe operating limits. Always install the collet insert securely and confirm the mounted accessory is rated for the tool speed before operating.