Counterbalance system reduces vibration to only 4.5 m/s2 for unmatched comfort.

Owners Manual: HR4001C_OM.pdf

• Powerful 11 AMP motor; efficient 1,350 – 2,750 BPM to tackle the most demanding jobs.
• One touch sliding chuck accepts SDS-Max hammer steel.
• 2-mode switch for “hammering only" or “hammering with rotation".
• Preset variable speed dial with 5 settings to match the bit speed to the application.
• 16.4 ft. jobsite cord for greater versatility and instant power.
• L.E.D. power light indicates switch failure or cord breakage; L.E.D. service light indicates carbon brushes need to be replaced.
• Externally accessible brushes for easy replacement and longer motor life.

• Capacity in Concrete (with core bits) -> 4-1/8 in.
• No Load RPM -> 235 - 480
• Blows/min.(BPM) -> 1,350 – 2,750
• Impact Energy (J) -> 9.5
• AMPS -> 11
• Bit type -> SDS - Max. shank bit
• Net Weight (lbs.) -> 13.9

• (1) Makita 181573-3 - Bit Grease