22-44 Plus Drum Sander Exclusive SandSmart™ controlled infinitely variable feed rate from 0 to 10 feet per minute, gives the ultimate sanded finish and preventing machine overload Self-cooling, precision-machined and balanced 5" x 22" extruded aluminum drum Continuous-duty motor offers the advantages of heavier use for longer periods of time Precision-flattened reinforced steel conveyor bed No-give power feed conveyor belt Zinc-plated steel tension rollers mount next to the drum Drum height and downward pressure are adjustable, eliminating snipe 1/16" per turn height adjustment Height adjustment supported is by a thrust bearing for easy and smooth adjustments Large, easy-to-use cast iron height adjustment handwheel allows both radical height changes and minute adjustments for extremely precise sanding thickness control Minimal assembly required Minimum of 400 CFM dust collection recommended Patented abrasive take-up fasteners for quick abrasive changes Convenient on/off switch with overload protection mounted at front of machine base Drum operates at 1,700 RPM Drum ball bearings are sealed and permanently lubricated 20 Amp service required