Name: WORX WU387.9 20V 22mm Brushless Cordless SDS-Plus Rotary Hammer (Bare Tool, No Battery or Charger)
Brand: Worx
SKU: WORX-WU3879
Price: 380 HKD
Availability: InStock

The WORX WU387.9 is the bare-tool version of the WORX 20V professional brushless cordless rotary hammer. It combines a brushless motor with an SDS-Plus quick-change chuck, delivering 2.0 joules of single impact energy, a no-load speed of 0-1450rpm and an impact rate of up to 4700bpm. Three operating modes - rotary drilling, hammer drilling and chiselling - cover concrete drilling up to 22mm, steel up to 13mm and wood up to 28mm, with an optimal bit range of 6-10mm, making it suitable for installation work, plumbing and fire services, air-conditioning, CCTV and signage mounting. A 19.5mm large-bore cylinder and dual anti-oil-leak sealing keep the tool stable through long shifts, and the bare tool weighs just 2.1kg. This SKU is supplied as a bare tool: no battery and no charger are included, making it ideal for users already on the WORX 20V MAX KROSS PACK battery platform.

WORX WU387 20V brushless cordless rotary hammer with auxiliary handle and depth gauge

Features and Benefits

WORX WU387.9 brushless rotary hammer with auxiliary handle and depth gauge (battery shown is not included)

Brushless motor with 2.0J impact energy

A brushless motor paired with a 19.5mm large-bore hammering cylinder delivers 2.0 joules per blow and up to 4700bpm, drilling concrete up to 22mm in diameter. The brushless design removes carbon-brush wear for higher transmission efficiency and longer tool life.

Three modes with an SDS-Plus chuck

The function dial selects rotary drilling, hammer drilling or chiselling, while the SDS-Plus chuck allows tool-free bit changes. Drilling, hammer drilling into concrete and light chipping are all handled by one tool, with an optimal bit range of 6-10mm.

WORX WU387 rotary hammer SDS-Plus chuck and mode selector dial

G-TEC gyroscopic anti-rotation protection with an electronic clutch cuts power the moment the bit binds, reducing wrist-twist injury risk.
Tile pulse mode for precise starts on tiles and ceramics with less edge chipping.
Variable-speed trigger with forward/reverse for controlled hole starting and easy bit withdrawal.
Dual anti-oil-leak sealing for a durable, well-sealed housing.
Ergonomic soft-grip handle with adjustable auxiliary handle and depth gauge position for less fatigue and controlled hole depth.
Runs on the WORX 20V MAX KROSS PACK battery platform, sharing batteries and chargers with other 20V tools in the range.

Specifications

Model	WU387.9
Rated voltage	20V (Li-ion)
No-load speed	0-1450 rpm
Impact rate	0-4700 bpm
Single impact energy	2.0 J
Chuck type	SDS-Plus
Operating modes	Drilling / Hammer drilling / Chiselling
Max drilling capacity (concrete)	22mm
Max drilling capacity (steel)	13mm
Max drilling capacity (wood)	28mm
Optimal bit range	6-10mm
Cylinder diameter	19.5mm
Weight (bare tool)	2.1 kg
Battery platform	WORX 20V MAX KROSS PACK
Configuration	Bare tool (no battery, no charger)

What is in the Box

WORX WU387 20V 22mm brushless cordless rotary hammer, bare tool x1
Battery and charger NOT included

The battery shown in the product images is for illustration only and is not supplied.

No downloads available yet

Contact the supplier if you need a datasheet, certificate, or another technical document.

Reviews & Q&A

No reviews yet. Be the first to review this product.

Features and Benefits

Brushless motor with 2.0J impact energy

Three modes with an SDS-Plus chuck

G-TEC gyroscopic anti-rotation protection with an electronic clutch cuts power the moment the bit binds, reducing wrist-twist injury risk.
Tile pulse mode for precise starts on tiles and ceramics with less edge chipping.
Variable-speed trigger with forward/reverse for controlled hole starting and easy bit withdrawal.
Dual anti-oil-leak sealing for a durable, well-sealed housing.
Ergonomic soft-grip handle with adjustable auxiliary handle and depth gauge position for less fatigue and controlled hole depth.
Runs on the WORX 20V MAX KROSS PACK battery platform, sharing batteries and chargers with other 20V tools in the range.

Specifications

Model	WU387.9
Rated voltage	20V (Li-ion)
No-load speed	0-1450 rpm
Impact rate	0-4700 bpm
Single impact energy	2.0 J
Chuck type	SDS-Plus
Operating modes	Drilling / Hammer drilling / Chiselling
Max drilling capacity (concrete)	22mm
Max drilling capacity (steel)	13mm
Max drilling capacity (wood)	28mm
Optimal bit range	6-10mm
Cylinder diameter	19.5mm
Weight (bare tool)	2.1 kg
Battery platform	WORX 20V MAX KROSS PACK
Configuration	Bare tool (no battery, no charger)

What is in the Box

WORX WU387 20V 22mm brushless cordless rotary hammer, bare tool x1
Battery and charger NOT included

The battery shown in the product images is for illustration only and is not supplied.

Reviews & Q&A

No reviews yet. Be the first to review this product.

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WORX WU387.9 20V 22mm Brushless Cordless SDS-Plus Rotary Hammer (Bare Tool, No Battery or Charger)

JACO自營旗艦店

Reviews & Q&A

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WORX WU387.9 20V 22mm Brushless Cordless SDS-Plus Rotary Hammer (Bare Tool, No Battery or Charger)

JACO自營旗艦店

Reviews & Q&A