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The WORX WU389.9 is a high-performance 3-function rotary hammer with a brushless motor, combining hammer drilling, drilling, and chiseling functions. It is widely applicable for drilling and demolition tasks on materials such as wood, steel, and concrete. Utilizing advanced brushless motor technology, it offers superior power output, higher energy efficiency, and a longer lifespan, while also reducing maintenance requirements. Its design considers user comfort during prolonged work, featuring a separated anti-vibration structure and a soft-grip anti-vibration handle that significantly reduces operational vibration and enhances stability. The double dust-proof chuck ensures secure bit locking and effectively prevents dust ingress, extending the life of components. The combination of 2.8 Joules of impact energy and a large-diameter cylinder demonstrates superior performance in high-intensity tasks, with a maximum drilling capacity of 26mm. Equipped with a 4.0/5.0AH high-capacity battery and supporting fast charging, it ensures uninterrupted workflow. The safety clutch release is an important safety feature that promptly disengages power when the bit is jammed, protecting both the user and the equipment. This 3-function rotary hammer is an ideal choice for professional job sites.
The WORX WU389.9 3-function rotary hammer, with its brushless motor, achieves higher power conversion efficiency and longer fault-free operating time. Compared to traditional brushed motors, this design significantly reduces heat generation and carbon brush wear, thereby lowering the frequency and cost of daily maintenance. Its three working modes (hammer drill, drill, chisel) offer flexibility, allowing it to adapt to various tasks from precise drilling to heavy-duty demolition. The ergonomic design, particularly the separated anti-vibration structure and rubberized grip handle, effectively absorbs impact, significantly reducing operator fatigue in the hands and arms, which contributes to improved productivity during extended work periods. The double dust-proof chuck not only protects critical components from the dust and debris common on construction sites but also ensures precise bit positioning and stability, which is crucial for applications requiring high-precision drilling. The 2.8 Joules of impact energy, combined with its optimized cylinder design, ensures efficient drilling speed and depth in hard materials like concrete.
