SY320 Variable Speed Jewelry Polisher
- Speed: 8500 RPM
- Power Source: Corded Electric
- Item Weight: 7.19 pounds
- Maximum Power: 320 watts
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact 110 volt bench motor running at 8500 RPM, sized for jewelry polishing work rather than heavier metalworking tasks.
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ASIN: B0B42HKC4QModel: SY320Category: Polishers
Overview
Spinning at 8500 RPM on standard 110 volt AC power, the SY320 weighs 3.26 kilograms and measures roughly 5 by 13 by 5.5 inches, sized as a bench-mounted tool rather than a handheld one.
8500 RPM is a speed associated with buffing and polishing spindles used on rings, chains, and small metal pieces, not with drilling or grinding equipment, which typically runs slower. Beyond speed, voltage, and dimensions, the listing does not specify accessory compatibility such as buffing wheel arbor size, so that is worth confirming before ordering wheels or attachments.
- 8500 RPM spindle speed
- 110 volt AC power source
- 5 x 13 x 5.5 inch footprint
- 3.26 kilogram weight
Who it's for
A jewelry bench or small workshop that needs a dedicated high speed motor for polishing is the intended setting for the SY320. Cutting, drilling, or engraving tasks need different equipment entirely, so look elsewhere for those.
Pros and cons
- High 8500 RPM spindle speed
- Runs on standard 110V household power
- Compact bench footprint
- Accessory compatibility not listed
- No stated noise or vibration data
- At 3.26 kilograms, needs a stable bench
Performance notes
The motor's 8500 RPM spindle speed is what drives its polishing use, since that speed range suits buffing wheels and small abrasive attachments rather than heavier stock removal. Running on standard 110 volt AC power, it plugs into an ordinary household outlet rather than requiring shop wiring.
Specifications
| Brand | Jewelry |
|---|---|
| Model | SY320 |
| Dimensions & fit | |
| Item Weight | 7.19 poundshigher than 80% of 26 polishers |
| Item Dimensions D X W X H | 5 × 13 × 5.5 inches |
| Capacity & performance | |
| Speed | 8500 RPM |
| Power & efficiency | |
| Power Source | Corded Electric |
| Maximum Power | 320 watts |
| Voltage | 110 voltshigher than 59% of 23 polishers |
| Construction & materials | |
| Material Type | Aluminum |
| Color | Silver |
| Included components | |
| Unit Count | 7.19 pounds |
| Included Components | Safety Glasses |
| Other details | |
| Item Type Name | Jewelry Polisher |
| Specific Uses For Product | Metal, Ceramic, Glass, Wood, Professional, Hobbyist |
Closest rivals on specs
Makita PW5001C Electronic Stone Polisher 4 Inch- Voltage 110 vs 127 volts (-13%)
- Item Weight 7.19 vs 8.38 pounds (-14%)
DEWALT DCM848B 20V MAX XR Random Orbit Polisher- Item Weight 7.19 vs 5.8 pounds (+24%)
Frequently asked questions
What speed does the SY320 run at?
8500 RPM.
What power does the SY320 need?
It runs on standard 110 volt AC power.
How much does the SY320 weigh?
3.26 kilograms.