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Dynabrade 57920 pneumatic orbital finishing sander, non-vacuum, palm grip, compact silver body

DYNABRADE

DYNABRADE 57920 orbital finishing sander non-vacuum pneumatic components power

SKU CH-JRVA-87FB9

Orbital finishing sander with 0.15 hp motor reaching 20,000 RPM, 1/8 in orbit, 9 cfm air consumption at 90 psi, and adhesive-backed 4 in pad

  • Orbital motion delivers smooth finishes
  • 15 hp motor handles heavy-duty sanding
  • Variable speed up to 20,000 RPM for control
  • Non-vacuum design with zero vacuum holes
  • 1/8 inch orbit diameter for fine results

Pneumatic Finishing Sander 57920

The Dynabrade 57920 is a palm-grip orbital sheet sander built for heavy-duty finishing work. It runs on compressed air at 90 psi and delivers a 1/8 in orbit for smooth surface preparation on wood, metal or composite panels.

Non-vacuum design with adhesive-backed pads

This model has zero vacuum holes and a rear exhaust, so dust is directed away from the operator without a collection hose. The 4 in x 4 5/16 in pad accepts adhesive-backed abrasives for quick changes between grits during extended sanding sessions.

0.15 hp motor at 20,000 RPM

The motor produces 0.15 horsepower at a maximum speed of 20,000 RPM with variable speed control. It consumes 9 cfm of air through a 1/4 in NPT inlet, so the supply system must sustain that flow for continuous operation.

Highlights

  • Orbital motion delivers smooth finishes
  • 15 hp motor handles heavy-duty sanding
  • Variable speed up to 20,000 RPM for control
  • Non-vacuum design with zero vacuum holes
  • 1/8 inch orbit diameter for fine results

Specifications

BrandDYNABRADE

Questions about this item

How often will the adhesive-backed abrasive pads on the 57920 need replacing?

Adhesive-backed pads wear with use; replace when the abrasive surface no longer cuts cleanly or the backing no longer holds the pad flat.

What limits continuous operation of the 0.15 hp motor at 20,000 RPM?

Sustained high speed is limited by the 9 cfm air supply at 90 psi; if the compressor cannot maintain flow the motor will slow.

How much noise and heat does the rear-exhaust sander produce during all-day use?

The rear exhaust directs air away from the operator; noise and heat levels depend on the compressor and shop ventilation, not on the tool alone.

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