Rotary Hammer Makita HR4002

The Makita HR4002 rotary hammer is a corded SDS‑MAX tool designed for heavy‑duty drilling and chiseling. It is powered by a 1050 W (10.0 AMP) motor that delivers up to 680 RPM and an impact energy of 6.2 J, with an impact rate of 2,500 bpm. The tool features sequential impact timing to reduce overlapping bit impacts for faster drilling, a torque limiting clutch to protect the gears if the bit binds, and an automatic brush cut‑off to extend commutator life. Weighing 6.2 kg with a 5 m cord and compact dimensions, it balances power and maneuverability for on‑site concrete, masonry and demolition tasks.

Advantages

The HR4002 combines a high‑torque motor design and Makita Motor Advantage components to improve energy transfer efficiency and tool longevity. Two operating modes — hammering only and hammering with rotation — plus a ‘‘no hammering when idling’’ feature increase versatility and reduce wear. A torque limiting clutch and automatic brush cut‑off protect internal parts, while a one‑touch sliding chuck and 12 bit angle settings speed up bit changes and improve working accessibility. The soft grip handle enhances operator control during extended use.

Suitable for

• Drilling large‑diameter holes in concrete and reinforced concrete with SDS‑MAX bits
• Chiseling, light demolition and removal of tiles or mortar
• Anchoring and heavy fastening tasks on construction sites
• Situations requiring continuous heavy use where durability and tool protection are important

Key specifications

• Motor power: 1050 W (10.0 AMP)
• Maximum speed: 680 RPM
• Impact energy: 6.2 J
• Impact rate: 2,500 bpm
• Chuck type: SDS‑MAX
• Operating modes: Hammering only / Hammering with rotation
• Weight: 6.2 kg
• Cord length: 5 m
• Dimensions (W x D): 114 mm x 458 mm
• 12 bit angle settings

How to use

Select the appropriate SDS‑MAX bit for the required hole diameter or chiseling task and secure it in the one‑touch sliding chuck. Choose the operating mode — hammering only for chiseling or hammering with rotation for drilling — and set the bit angle if needed for accessibility. Start the tool and apply steady pressure, allowing the hammer action to perform the work; do not force the tool. If the bit binds, the torque limiting clutch will disengage to prevent gear damage. Switch off and unplug before changing bits or performing maintenance.

Usage recommendations

For best results, use the Makita HR4002 with high‑quality SDS‑MAX bits matched to the material and hole size. Wear appropriate personal protective equipment including eye, ear and respiratory protection. Allow the motor to cool during extended continuous use and follow periodic inspection of brushes and mechanical parts to maintain performance and service life.