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Silver palm-grip air random orbital sander with vinyl pad and rear exhaust

Dynabrade Products

Dynabrade Products 56850 Air Random Orbital Sander 0.28HP 5 In

SKU CH-04AE-1E7RT

A 5-inch air random orbital sander with a 3/32-inch orbit, 0.28 hp motor, 12,000 RPM free speed and rear exhaust for industrial finishing work

  • 28 hp motor delivers consistent sanding power
  • 12,000 RPM free speed enables rapid material removal
  • 3/32 in orbit diameter produces fine swirl-free finish
  • Palm-style body with lever throttle gives comfortable one-hand control
  • Rear exhaust directs airflow away from workpiece and operator

Dynabrade 56850 Air Random Orbital Sander

The Dynabrade 56850 is a palm-style air random orbital sander built for industrial duty. It accepts a 5 in vinyl-faced pad and runs on a 0.28 hp motor with a 3/32 in orbit diameter. The tool uses a lever throttle and a 5/16 in.-24 spindle, suited for technicians who need a lightweight pneumatic sander for surface preparation and finishing work.

Sustained air consumption and speed

At full load the sander draws 18.0 CFM at 90 psi, while a 15-second run averages 4.5 CFM. Free speed is rated at 12,000 RPM with no variable-speed control. Continuous operation therefore requires a compressor that can maintain the higher flow rate; otherwise speed and cutting action will drop off during extended use.

Installation notes and common issues

Connect the 1/4 in NPT air inlet to a hose of at least 1/4 in ID and set the regulator to 90 psi. The rear exhaust directs air away from the workpiece, but the tool has no integrated vacuum port, so dust collection must be handled separately. The most frequent problem is insufficient compressor capacity causing the sander to stall or run below rated speed.

Highlights

  • 28 hp motor delivers consistent sanding power
  • 12,000 RPM free speed enables rapid material removal
  • 3/32 in orbit diameter produces fine swirl-free finish
  • Palm-style body with lever throttle gives comfortable one-hand control
  • Rear exhaust directs airflow away from workpiece and operator

Specifications

BrandDYNABRADE

Questions about this item

How much air does the 0.28 hp sander consume during a full work shift?

At full load the tool draws 18.0 CFM; average consumption over a 15-second cycle is 4.5 CFM, so plan compressor capacity accordingly.

Which fittings and hose must I already have to connect the 1/4 in NPT inlet?

A 1/4 in NPT coupler and a hose with at least 1/4 in inner diameter are required to supply the 90 psi operating pressure.

Will the 5/16 in-24 spindle accept the 5 in vinyl pads I already own?

Yes, the 5/16 in-24 thread matches standard 5 in pads, so existing vinyl-faced discs can be used directly.

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