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Dynabrade 47821 right-angle air disc sander, silver metal body with 2-inch pad and 1/4-inch NPT inlet

DYNABRADE

DYNABRADE 47821 Right Angle Air Disc Sander pneumatic components power

SKU CH-89H4-1354F

Right-angle pneumatic disc sander running at 15,000 RPM with 0.4 hp for heavy-duty material removal

  • Right-angle grip reaches tight corners
  • 4 hp motor delivers consistent sanding power
  • Fixed 15,000 RPM speed for uniform finish
  • Locking abrasive mount enables quick disc changes
  • 25 cfm air consumption at 90 psi operating pressure

DYNABRADE 47821 Right Angle Air Disc Sander

The DYNABRADE 47821 is a pneumatic right angle disc sander built for heavy duty industrial sanding tasks. It operates at a fixed speed of 15,000 RPM with a 0.4 hp motor and uses a 2 inch locking type abrasive pad. The tool features a non vacuum design and a right angle grip for controlled access in tight work areas.

Compressor Supply and Connection Requirements

Verify your air compressor can deliver 25 cfm at a consistent 90 psi to meet the tool consumption and pressure needs. The sander requires a 1/4 inch NPT air inlet and a minimum 1/4 inch hose size for proper airflow. Confirm the spindle thread size of 1/4 In. -20 matches your existing abrasive discs before ordering.

Suited for Industrial Metal and Surface Preparation

This sander suits technicians and fabricators who need a durable fixed speed air tool for aggressive material removal on metal or composite surfaces. It is not intended for buyers who need variable speed control for fine finishing work or a built in dust extraction system for cleanroom environments. Operators requiring a straight grip or larger pad diameters should consider alternative configurations.

Highlights

  • Right-angle grip reaches tight corners
  • 4 hp motor delivers consistent sanding power
  • Fixed 15,000 RPM speed for uniform finish
  • Locking abrasive mount enables quick disc changes
  • 25 cfm air consumption at 90 psi operating pressure

Specifications

BrandDYNABRADE

Questions about this item

What comes in the box with the Dynabrade 47821 and do I need to buy anything extra?

The sander ships with a 2 in pad and a 1/4 in NPT air inlet. You must supply an air hose of at least 1/4 in ID, a compressor that can deliver 25 cfm at 90 psi, and abrasive discs that fit the 1/4 in -20 spindle.

The spec shows 0.4 hp and 15,000 rpm — which version should I choose?

Only one configuration is listed: 0.4 hp, fixed-speed 15,000 rpm, right-angle grip, 2 in pad. There are no alternative capacities or speed settings to select.

What does 15,000 rpm mean when the tool is running on my compressor?

At 90 psi the motor spins the 2 in disc at 15,000 rpm. If your compressor cannot maintain 25 cfm at that pressure the speed will drop and material removal will slow.

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