Dynabrade 58503 Palm Air Orbital Sander 3-1/4 X 5 in

Product Description

The DYNABRADE 58503 is a pneumatic palm orbital sander designed for finish sanding on flat and slightly contoured surfaces. It operates at 10,000 orbits per minute (OPM) using a 3-1/4 x 5 inch rectangular pad, making it well suited for surface preparation, paint finishing, and fine stock removal. The tool requires a 90 psig air supply with a 1/4 NPT inlet and draws 13 CFM at full load. At 0.15 horsepower and 2.6 pounds, it is a compact, low-fatigue tool for extended use. A licensed tradesperson or industrial finishing technician is the typical operator.

The 58503 fits residential and light commercial finishing applications including woodworking shops, auto body prep, and general metalworking. The rectangular pad format covers flat panels efficiently, making it a common choice for cabinet finishing, drywall feathering prep, and painted surface scuff work. The tool ships with a 56317 Hook-Face Sanding Pad included. It is intended for use with a compressed air supply line sized at a minimum of 0.25 inches inside diameter to maintain adequate CFM delivery at the tool inlet.

Key Features

• 10,000 OPM free speed for consistent finish across flat surfaces
• 3-1/4 x 5 inch rectangular sanding pad covers broad panel areas efficiently
• 2mm orbit diameter (0.09375 inches) delivers fine, swirl-minimized scratch pattern
• Requires 90 psig and 13 CFM — compatible with standard shop compressor setups
• 1/4 NPT air inlet for direct connection to standard shop fittings
• Includes 56317 Hook-Face Sanding Pad — ready to use out of the box
• Lightweight at 2.6 pounds for reduced operator fatigue during extended use

Compatibility

Designed as an OEM-style pneumatic palm sander for use with standard hook-face rectangular abrasive sheets sized for a 3-1/4 x 5 inch backing pad. Includes the DYNABRADE 56317 Hook-Face Sanding Pad.

Installation Notes

Connect to a compressed air supply delivering a minimum of 90 psig and 13 CFM through a hose with at least 0.25 inch inside diameter. Shut off and bleed the air supply before connecting or disconnecting the tool. Verify all fittings are rated for the operating pressure before use. Follow applicable OSHA standards and the manufacturer safety guidelines for pneumatic tool operation.