Skip to product information
1 of 5


Alpha WDP-320 Wet/Dry Variable Speed Polisher

Alpha WDP-320 Wet/Dry Variable Speed Polisher

Regular price $424.70 USD
Regular price Sale price $424.70 USD
Sale Sold out
Shipping calculated at checkout.


Alpha® introduces the WDP-320 Wet/Dry Variable Speed Polisher… This unit is an updated version of the WDP-120 and although the general appearance of the machines are similar, we have made a major overhaul on the tool to make it a more durable and dependable tool. The major upgrade came in the form of a heavy-duty gear system that includes a step-down transmission and a bevel and pinion gear to produce the variable speed range of 700 to 2,500 rpm. Thanks to the high-tech machine center, we have all parts precision-machined to reduce noise and vibration during the application. This upgrade ensures a long-lasting tool life and a comfortable application. Other changes include the spindle which is now specially coated to reduce friction extending the life of the oil seals. The water hose is now all-weather flexible & kink-free. The electrical power cord has an inline GFCI. The WDP-320 Hybrid Polisher comes with the Ecoguard G attached which provides for wet and dry tile edge polishing without the typical mess. It delivers the best quality polish on concrete countertop surfaces when used with water, or hook up a vacuum cleaner for dry concrete floor polishing without the dust. In addition, by removing the Ecoguard’s Front Cover and attaching the Magnetic Plate, you can polish right up to the wall. The WDP-320 now has hose lengths of 15 ft. and are bundled by 3 ft. of an EasyOn-EasyOff sleeve that improves the maneuverability of the polisher. It comes with a standard C-Handle for torque-oriented applications, such as dry polishing on concrete using a 5” disc. In addition, a standard Side Handle for the general edge polishing applications is included.
  • Wet/Dry Hybrid Polisher with The Ecoguard G Attached for Tile Edge Polishing Without The Typical Mess
  • Provides The Best Quality Polish On Concrete Countertop Surfaces When Used with Water, or A Vacuum
  • Heavy-Duty Gear System Includes A Step-Down Transmission
  • Variable Speed Range of 700 To 2,500 RPM
  • Polish or Grind Right Up To The Wall
  • 15ft. Electrical Power Cord Has An Inline GFCI
  • Coated Spindle for Reduced Friction
  • 15ft. Water Hose Is All-Weather Flexible and Kink-Free
  • Long-Lasting Tool Life and A Comfortable Application
  • Includes Side Handle for Edge Applications
  • Fits 5” Discs
  • Combine with HEPA Vacuum for A Virtually Dust-Free Solution
  • One Year Warranty* (*See manual for details)


Product Details
Specification Data
Model WDP-320
Rating 120 Volts
Amperage 7.0A
Power 800W
No Load Speed (Variable) 700~2500 RPM
Weight 7.3 lbs (3.3 kgs)
Spindle 5/8"-11


Equipment Included
Item Quantity
Ground Fault Circuit Interrupter* 1
Water Hose Assembly* 1
Water Spray Value Assembly 1
Stainless Steel Hose Band 1
Rubber Band 1
Open End Wrench 1
Pin Wrench 1
C-Handle* 1
Side Handle (reversible) 1
Extra Carbon Brush Set 1
Rubber Hose Adapter 1
Ventilation Cap* 1
Ecoguard G* 1
Flange & Lock Nut Set 1
EasyOn-EasyOff Sleeve* 1
*Factory Attached 1

Manual: WDP-320 Manual v0721
Manual: WDP-320 v1
Manual: WDP-320 v2
Parts-Schematic: WDP-320-v1 Parts/Schematic

View full details