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Cordless H3 compact rotary hammer 20V - tool only


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The Worx H3 WX394 cordless rotary hammer makes hard concrete drilling a breeze. Compact and lightweight, yet capable of delivering twice the shot energy than similar sized cordless rotary hammers.

  • 3 in 1: rotary hammer with 1.5 Joule impact force, drill and screwdriver
  • Drills holes into hard concrete up to 18mm
  • 0-1100 rpm no load speed
  • Compatible with SDS Plus bits for max compatibility
  • Part of the Worx PowerShare battery platform


Product variations


New with 1.5 Joule shot energy, tool only


Same as WX390.9 + 2 batteries and charger


Same as WX390.1, tool only charger and 2 batteries (2 Ah & 4 Ah)


Same as WX390.1, tool only


Same as WX390.1, tool only

Product description

The pneumatic hammer mechanism of the Worx H3 WX394 cordless rotary hammer delivers an impressive 1.5 Joules of impact energy for fast drilling in reinforced concrete. The H3 is surprisingly lightweight and compact for its power, making it ideal for overhead and other critical applications where conventional corded rotary hammers would be awkward and heavy to operate. Unlike similar compact rotary hammers that force you to buy specific drill bits, the Worx H3 accepts all SDS Plus bits. As an additional benefit, its supplied plug-in chuck converts the rotary hammer into a drill that uses round shaft bits, while the one-touch 6.35 mm hex chuck transforms it into a powerful driver. ​This tool is part of the expanding Worx PowerShare, one of the most versatile cordless platforms that covers power tools, lawn and garden tools and everyday life products. PowerShare's "One Battery, Expandable Power" means the same 20V battery can be used in multiple configuration to power up 40V and 80V products.

Key features

  • Pneumatic rotary hammer mechanism in a compact form factor
  • Best in class impact energy of 1.5 Joules
  • Drills holes into reinforced concrete up to 18 mm
  • Compatible with broadly available SDS Plus bits
  • SDS chuck with automatic locking, dust protection and excellent impact energy transfer rate
  • 3 in 1 tool: rotary hammer, wood/metal drill and screwdriver
  • LED Light for dark, tight spots or nighttime applications
  • Compatible with all PowerShare batteries

Technical specifications and Manual

Battery & Charger

Battery TypeLi-Ion
Battery TechnologyPowerShare
No. of Batteries Per Pack0
Power voltage supply20 V Max

Vibration Information

Vibration Level1.5 m/s²

Weight & Dimensions

Product depth66 mm
Product height152 mm
Product width256 mm
Weight without Battery1.4 kg /

Basic Specifications

Motor TypeBrushed
No. of SDS Drill Functions3 Function
SDS drill product typeSDS Plus
Switch TypeTrigger Switch
Vibration SystemAnti-Vibration System

Power Supply

Manual or PoweredPowered


Capacity Concrete18 mm
Capacity Steel13 mm
Capacity Wood20 mm
Impact Energy1.5 J
Impact Rate5300 bpm /
No Load Speed0-1100 rpm

Download manual file

In the box

  • Compact Rotary Hammer WX394 (1)
  • HSS drill bits (2)
  • SDS drill bits (2)
  • Keyless chuck with SDS adapter (1)
  • Screwdriver bits (4)

Same battery, expandable power

Stop buying batteries and chargers that fit one voltage only. Enjoy unlimited freedom of choice with Worx PowerShare™, the cordless system that adapts to your needs. As easy as combining bricks in construction toys.

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