
Worx · WU391T.9
WORX WU391T.9 20V 26mm Brushless Cordless 3-Mode Rotary Hammer (Bare Tool)
電動工具
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The WORX WU385.9 is a 24mm brushless 3-mode rotary hammer on the WORX 20V lithium-ion platform, supplied as a bare tool. Driven by a brushless motor, it delivers 2.5 joules of impact energy, a rated no-load speed of 1000 rpm and a hammering rate of 0-5000 bpm, drilling up to 24mm in C30 concrete, 13mm in steel and 27mm in wood, with an optimum drilling range of 8-12mm. This mid-duty class makes it well suited to renovation, electrical and M&E installation work such as anchor holes, bracket fixing and conduit openings. The SDS quick-change chuck allows tool-free bit changes, while the mode selector offers hammer drilling, rotary drilling and chiselling, plus a chisel-angle adjustment setting so drilling and light chipping are handled by one tool. Measuring 314 x 86 x 206mm and weighing just 2.3kg, it stays manageable for overhead and confined-space work. This WU385.9 listing is the bare tool: the main unit only, with no battery and no charger included — ideal for users who already own WORX 20V batteries.
A brushless motor delivers 2.5 joules of single-impact energy at a rated no-load speed of 1000 rpm and a hammering rate of 0-5000 bpm, drilling up to 24mm in C30 concrete. The brushless design removes carbon-brush wear and replacement, runs more efficiently and cooler, and extends motor life.
The mode selector provides hammer drilling, rotary drilling and chiselling, plus a chisel-angle adjustment position for setting flat-chisel orientation before locking it. The SDS quick-change chuck accepts common SDS-plus drill and chisel bits without tools, so drilling, hammer drilling into concrete and light chipping are all covered by one tool.
| Model | WU385.9 (bare tool) |
|---|---|
| Brand | WORX |
| Rated voltage | 20V (lithium-ion) |
| Motor type | Brushless |
| Rated no-load speed | 1000 rpm |
| Rated hammering rate | 0-5000 bpm |
| Impact energy | 2.5 J |
| Max drilling capacity (C30 concrete) | 24 mm |
| Max drilling capacity (steel) | 13 mm |
| Max drilling capacity (wood) | 27 mm |
| Optimum drilling range | 8-12 mm |
| Chuck type | SDS quick-change (SDS-plus) |
| Operating modes | Hammer drill / rotary drill / chisel, plus chisel-angle adjustment |
| Dimensions | 314 x 86 x 206 mm |
| Weight | 2.3 kg (bare tool, without battery) |
| Dust extraction accessory | Optional WA1603 PURE FORCE integrated dust box (sold separately) |
Note: the 20V battery and the WA1603 PURE FORCE dust box shown in the product images are optional accessories and are not included with this bare tool. For a kit with batteries and charger, see the WU385.3 version.
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