Rotary Hammer Makita HR4002

The Makita HR4002 rotary hammer is a professional-grade SDS‑MAX hammer designed for heavy-duty drilling and chiselling. It is powered by a 1050 W (10.0 AMP) motor delivering up to 680 RPM and an impact energy of 6.2 J with an impact rate of 2,500 bpm. The tool combines sequential impact timing and Makita Motor Advantage construction to improve energy transfer efficiency, reduce overlapping impacts and increase drilling speed and tool life. Weighing 6.2 kg with a 5 m cord and compact dimensions (114 mm width, 458 mm depth), the HR4002 balances power and maneuverability for onsite and workshop applications.

Advantages

The integrated torque limiting clutch helps protect internal gears by disengaging when the bit binds, while the automatic brush cut‑off safeguards the commutator for longer service life. Sequential impact timing and a powerful motor allow faster drilling in concrete and masonry. A one‑touch sliding chuck enables quick SDS‑MAX bit changes and 12 angle settings provide convenient bit orientation for chiselling and angled work. The soft grip handle reduces operator fatigue during extended use.

Suitable for

• Drilling large diameter holes in concrete and reinforced concrete with SDS‑MAX bits
• Chiselling and demolition tasks where high impact energy is required
• Anchoring and mechanical fixing installations in masonry
• Construction and renovation work requiring sustained heavy‑duty performance

Key specifications

• Motor power: 1050 W (10.0 AMP)
• Maximum no‑load speed: 680 RPM
• Impact energy: 6.2 J
• Impact rate: 2,500 bpm
• Chuck system: SDS‑MAX
• Weight: 6.2 kg
• Cord length: 5 m
• Dimensions (W × D): 114 mm × 458 mm
• Operation modes: Hammering only and Hammering with rotation
• Bit angle settings: 12 positions

How to use

Select an appropriate SDS‑MAX bit for the material and task, secure the bit in the one‑touch sliding chuck until it locks, and choose the required mode (hammering only or hammering with rotation). Start drilling at low speed to establish the pilot position, then increase speed as needed. Use the torque limiting clutch and avoid forcing the tool; if the bit binds the clutch will disengage to prevent gear damage. For chiselling, set the bit angle among the 12 positions for best orientation and apply steady pressure while allowing the hammer action to do the work.

Usage recommendations

Use appropriate personal protective equipment (safety glasses, hearing protection, dust mask and gloves). For reinforced concrete, pre‑drill pilot holes where possible and allow the tool to cool during prolonged heavy use. Regularly inspect brushes and commutator and follow Makita service guidelines to maintain optimal performance and extend tool life.