Dynabrade 50321 Air Disc Sander 4.5-5 in 11000 Rpm 0.7 Hp

Product Description

The DYNABRADE 50321 is a pneumatic handheld disc sander designed for surface preparation, finishing, and material removal in professional trade and industrial environments. It accepts abrasive discs ranging from 4.5 to 5 inches in diameter and operates at 11,000 RPM, delivering consistent stock removal with a 0.7 hp air motor. The tool requires a 90 psi supply pressure and consumes 32 CFM at full load, making compressor sizing an important pre-install consideration. Air inlet is 1/4 NPT. The rear exhaust location directs spent air away from the work surface and the operator. The unit includes a lever throttle for precise speed control. The package includes a 50267 Disc Pad Assembly for center-hole abrasive discs compatible with 4.5 to 5 inch diameter abrasives.

The DYNABRADE 50321 is suited for automotive body work, metal fabrication, composite finishing, and general surface prep tasks where a compact, high-speed disc sander is required. The lever-style throttle allows for variable speed control, making it practical for operators who need to manage material removal rates across different substrates. Its pneumatic drive means it is well-suited for environments where electric tools are restricted due to moisture, flammability, or code requirements. Typical users include auto body technicians, metalworkers, shipyard workers, and industrial maintenance professionals.

Key Features

• Operates at 11,000 RPM for aggressive material removal and surface finishing
• Accepts 4.5 to 5 inch diameter center-hole abrasive discs
• Lever throttle provides variable speed control during operation
• Rear exhaust location keeps airflow directed away from work surface and operator
• 1/4 NPT inlet for standard pneumatic tool connections
• Includes 50267 Disc Pad Assembly for center-hole abrasive discs

Compatibility

Designed for use with 4.5 to 5 inch diameter center-hole abrasive discs. Includes the DYNABRADE 50267 Disc Pad Assembly. Requires a compressed air supply delivering 90 psi and a minimum of 32 CFM.

Installation Notes

Installation and operation should be performed by qualified personnel familiar with pneumatic tool safety and applicable workplace safety standards. Before connecting or disconnecting the air supply, verify the air line is depressurized. Ensure the compressor and air lines are rated for the required 90 psi operating pressure and can sustain the 32 CFM demand of this tool. Inspect the abrasive disc and pad assembly for damage before each use, and never exceed the maximum disc size of 5 inches.