$ 622.86
$ 622.86
$ 622.86
Alpha® WDP-320 Wet/Dry Variable Speed Polisher (120V)
The Alpha® WDP-320 is the updated wet/dry hybrid polisher that supersedes the legacy WDP-120. A heavy-duty gear system with step-down transmission, precision-machined bevel and pinion gears, and a coated spindle deliver smoother operation, lower noise, and reduced vibration. Bundled with the Ecoguard™ G attachment, it polishes tile edges and concrete countertops with water, or connects to a HEPA vacuum for dust-free dry polishing on concrete floors. The 15 ft flexible water hose with EasyOn-EasyOff sleeve and 15 ft inline-GFCI power cord deliver the all-day reach jobsites demand.
Features
- Variable Speed 700-2,500 RPM
- Wet/Dry Hybrid Polisher with Ecoguard™ G Attachment
- Heavy-Duty Gear System with Step-Down Transmission
- Powerful 7.0 A Motor (800 W)
- 15 ft Flexible All-Weather Water Hose
- 15 ft Electrical Power Cord with Inline GFCI
- EasyOn-EasyOff Sleeve (3 ft) for Improved Maneuverability
- Coated Spindle Reduces Friction Between Oil Seals
- Compatible with HEPA Vacuum for Dust-Free Dry Polishing
- Polish or Grind Right Up to a Wall
- C-Handle and Reversible Side Handle Included
- One-Year Tool Warranty
| Part No. | Voltage | Amperage | Speed Range | Spindle | UPC |
|---|---|---|---|---|---|
| WDP-320 | 120V | 7.0A | 700-2,500 RPM | 5/8"-11 | 749173541056 |
- Confirm your supply voltage is 120V before connecting the tool.
- Thread a 5"-diameter 5/8"-11 polishing pad or disc onto the spindle.
- For wet polishing: connect the 15 ft flexible hose to a garden-hose source and open the inline valve.
- For dry polishing: remove the EasyOn-EasyOff sleeve and water-supply assembly, then connect the Ecoguard™ G to a HEPA vacuum.
- Plug into a grounded outlet and verify the inline GFCI is functioning before each use.
- Install either the C-Handle (torque applications) or reversible Side Handle (general edge polishing).
- Start at the lowest speed and dial up gradually within the 700-2,500 RPM range to match the abrasive grit.
- After use, run the spindle briefly to discharge water and blow-dry the inside of the motor housing with compressed air when available.
Wet/Dry Variable Speed Polisher (120V) — WDP-320
| Part No. | WDP-320 |
| UPC | 749173541056 |
| Type | Wet/Dry Variable Speed Polisher (120V) |
| Thread | 5/8"-11 |
| Max RPM | 2,500 RPM |
| Recommended For | Wet and dry polishing of tile edges, concrete countertops and floors |
| Packaged Weight | 11.05 lbs |
| Package Dimensions | 20" x 8.5" x 7" |
| Commodity Code | 8464.20.0120 |
| Country of Origin | China |
| Property | Detail |
|---|---|
| Motor | 7.0 A / 800 W single-phase AC, 50/60 Hz |
| Voltage | 120 V |
| Speed Range | 700-2,500 RPM variable |
| Spindle | 5/8"-11 |
| Recommended Disc Size | 5" (127 mm) |
| Cord Length | 15 ft (4.5 m) with inline GFCI |
| Water Hose | 15 ft flexible all-weather with garden-hose adapter |
| Tool Weight | 7.3 lbs (3.3 kg) |
| Warranty | 1 Year against defects in material and workmanship |
| Country of Origin | China |
Can I use the WDP-120 carbon brush set on the WDP-320?
No. The WDP-320 requires its own designated carbon-brush set; the WDP-120 brushes are not interchangeable.
Can I use the WDP-320 for cutting applications?
No. Alpha does not recommend using a polisher for cutting; the maximum 2,500 RPM does not provide enough peripheral speed for safe, efficient cutting.
How do I configure the WDP-320 for dry polishing?
Remove the EasyOn-EasyOff sleeve from the hoses and the entire water-supply assembly, then connect the Ecoguard™ G to a HEPA vacuum for dust-free operation.
What is the warranty duration?
Alpha warrants the WDP-320 against defects in material and workmanship for one (1) year from the date of original retail purchase.
What disc diameter does Alpha recommend for edge polishing?
Alpha recommends a 5" diameter disc for all polishing applications with the WDP-320 because it optimizes water distribution and tool stability.
What daily maintenance does the polisher need?
Discharge water from the hose and spindle after each shift. When compressed air is available, blow-dry the inside of the motor housing and clear dust from moving parts.
Where can I send the polisher for repair?
You can order spare parts for in-house service, take the tool to a local Alpha dealer, or send it directly to Alpha for factory repair.
Does the WDP-320 replace the WDP-120?
Yes. The WDP-320 is the updated successor to the WDP-120 with a heavy-duty gear system, precision-machined components, and the bundled Ecoguard™ G attachment.
No product-specific videos are currently available from the manufacturer or DST.
⚠ WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. Always wear appropriate PPE.