Cordless wall chaser Bosch GNF 18V-40 Professional solo — 18 V (body only, without battery/charger)

The Bosch GNF 18V-40 Professional solo is a cordless wall chaser designed for creating clean grooves in masonry and concrete for electrical conduits, pipes and installation channels. Supplied as a body-only unit without battery or charger and delivered in an L-BOXX, this 18 V tool offers the mobility of a battery-powered platform while keeping a compact footprint for use on construction sites and renovation jobs where access and freedom from cables are important.

Advantages

The cordless design eliminates trailing cables, improving manoeuvrability and reducing trip hazards on site. As part of an 18 V battery platform, the tool allows flexible use with compatible Bosch batteries (battery and charger not included). Its compact housing and integrated dust extraction interface simplify on-site handling and make it easier to work in confined spaces. Being supplied in an L-BOXX ensures protected storage and straightforward transport between job locations.

Suitable for

• Cutting grooves in masonry, brick and concrete for electrical wiring and conduit installation
• Creating channels for plumbing pipes and small-diameter ducts
• Renovation and retrofit work where access is restricted and portability is required
• Site work where cordless operation reduces setup time and improves mobility

When it may not be suitable

The tool is supplied as a body-only unit and requires a compatible 18 V battery and charger, which are not included; buyers should budget separately for those components. For heavy, continuous cutting in large-scale concrete projects, a mains-powered wall chaser with higher sustained power may be more appropriate than this cordless model.

Key specifications

• Power supply: 18 V battery platform (battery and charger not included)
• Tool type: Cordless wall chaser for cutting grooves in masonry and concrete
• Delivery: Body-only in L-BOXX for storage and transport
• Design: Compact housing for improved handling in confined areas
• Dust management: Integrated dust extraction interface for connection to a compatible vacuum

How to use

Mount an appropriate diamond or abrasive cutting wheel compatible with wall chasers and ensure the wheel is tightened to the manufacturer's torque specification. Fit a compatible 18 V battery and check the battery charge level before operation. Connect a suitable dust extraction system to the tool's dust interface to reduce airborne dust. Mark the groove line on the work surface, position the tool with steady pressure, and guide it along the marked path at a controlled feed rate to achieve the required groove width and depth. Allow the tool and wheel to cool periodically during extended use and follow Bosch safety instructions for PPE and operating procedures.

What to consider before purchase

• Batteries and charger are not included — confirm compatibility with existing Bosch 18 V batteries or budget for separate purchase
• Ensure availability of suitable cutting wheels for masonry or concrete tasks
• Plan for dust extraction equipment to meet site health and safety requirements
• Verify that groove dimensions required for your project are within the tool's cutting capacity

Usage recommendations

Use the Bosch GNF 18V-40 Professional solo with a matched Bosch 18 V battery that provides sufficient capacity for the intended work duration, pair it with a dedicated dust extractor for indoor use, and select the correct cutting wheel for masonry or concrete. Wear eye, respiratory and hearing protection, and follow manufacturer instructions for wheel installation and maintenance to ensure safe and effective operation.