DEWALT D25604K SDS Max Combination Rotary Hammer, 1-3/4 Inch

DEWALT D25604K SDS Max Combination Hammer Overview

The DEWALT D25604K is a 1-3/4-inch SDS Max combination rotary hammer built for the toughest concrete jobs. With 8 joules of impact energy, it powers through reinforced concrete, making it ideal for horizontal drilling through #5-#8 rebar, coring, and chipping in mid to upper wall applications. Its lightweight design reduces user fatigue while delivering professional-grade performance for contractors and serious DIYers.

1-3/4-Inch SDS Max Capacity for Heavy-Duty Drilling

This hammer's capacity allows it to handle large-diameter bits, making quick work of anchor holes and rebar penetration. The SDS Max chuck ensures secure bit retention and rapid bit changes even with gloved hands.

Performance under Pressure

The constant speed electronics maintain consistent speed under heavy loads, even in high PSI concrete. The variable speed dial lets you adjust drilling or chipping speed based on the material's thickness and density, giving you precise control across a range of tasks.

Safety with E-Clutch® Technology

The DEWALT anti-rotation E-Clutch system detects rotational motion and shuts the tool down instantly in bind-up situations, minimizing sudden torque reaction compared to standard clutches. This, combined with SHOCKS Active Vibration Control, reduces vibration and helps prevent numbness and tingling in your hands so you can work longer with less fatigue.

Three Modes for Versatility

Switch between hammer only, rotation only, and hammer with rotation to handle drilling, chipping, and demolition without needing a separate tool. This 3-mode operation makes the D25604K a true all-in-one solution.

D25604K Grease Replacement and Maintenance

To keep your DEWALT D25604K performing at its best, regular maintenance is essential. The hammer mechanism requires periodic grease replacement to prevent wear and ensure consistent impact energy. Use a high-quality SDS Max grease, such as DEWALT's recommended lithium-based grease, and replace the grease every 20-30 hours of heavy use or as indicated in your maintenance schedule. Always check the grease level and condition, and consult a qualified service center if you're unsure about the procedure.

Choosing the Right Grease for Your D25604K

For optimal performance, select a grease specifically designed for rotary hammer mechanisms. Avoid using standard tube grease that may not withstand high temperatures. When replacing grease, clean the old grease from the tool's gearbox and apply a fresh coat to all moving parts. This ensures smooth operation and extends the life of your hammer.