Rotary hammer PRIME3 TRH31 800W 3.5J — percussion drill for drilling and chiseling

PRIME3 TRH31 is a rotary hammer with an 800W motor and 3.5 J impact energy, built for drilling and chiseling in masonry, concrete and similar materials. The tool supports rotary and hammer-only modes, providing the flexibility to perform drilling, light demolition and chiseling tasks. Ergonomic handling and a compact form factor make this rotary hammer suitable for extended use in construction, renovation and workshop environments.

Advantages

The rotary hammer combines a high-power 800W motor with a per-stroke impact energy of 3.5 J, enabling efficient percussion performance in dense materials while maintaining consistent rotational speed under load. Mode selection for rotary-plus-impact and hammer-only operation allows fast switching between drilling and chiseling tasks. The tool’s ergonomic grip and balanced weight distribution reduce user fatigue during prolonged operation and improve accuracy when positioning bits. Durable construction and a straightforward control layout support reliable everyday use.

Suitable for

• Drilling holes in concrete, brick and stone for anchor bolts and fasteners
• Chiseling and light demolition work such as removing tiles or breaking thin concrete layers
• Installing electrical boxes and pipe penetrations in masonry walls
• General construction and renovation tasks requiring percussion drilling

Key specifications

• Nominal input power: 800 W
• Impact energy: 3.5 J
• Operating modes: rotary with percussion, hammer-only
• Intended materials: masonry, concrete, brick, stone
• Ergonomic side handle for two-handed control
• Bore diameter range suitable for anchor and fastener holes (typical for this class of rotary hammer)

How to use

Select an appropriate drill bit or chisel compatible with the rotary hammer, secure it in the tool’s chuck according to the manufacturer’s instructions, and set the operating mode to either rotary-plus-impact for drilling or hammer-only for chiseling. Position the bit at the intended work point with firm, controlled pressure and start the tool at a moderate speed to establish the hole, increasing force as required. Allow the tool to perform the percussion action with steady guidance rather than excessive manual force. For chiseling, use the hammer-only mode and move the chisel progressively along the work surface. Always disconnect power before changing accessories or performing maintenance.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses, hearing protection and dust mask when working with concrete and masonry. Choose bits and chisels rated for rotary hammer use and inspect them regularly for wear. When drilling near reinforcing steel or utilities, verify locations and use reduced feed pressure to avoid sudden tool reactions. Allow brief cooling intervals during extended use to maintain motor performance.