Powerful corded wall chaser for deep cutting with enhanced handling and dust extraction. Heavy-dut...Powerful corded wall chaser for deep cutting with enhanced handling and dust extraction. Heavy-duty power in your hands, thanks to the 2000 W brushless motor. Built to last: the GNF20-40 delivers high durability in demanding working conditions. Smooth cuts up to 40 mm deep through masonry, sandstone, and concrete with two diamond cutting discs. Work comfortably in any position or direction with the ergonomic handle arrangement. Breathe freely: minimal dust, thanks to the Bosch Professional Click & Clean interface. Electricians often face challenges cutting grooves into walls or ceilings due to underpowered tools that struggle with different materials and lack ergonomic design. The GNF20-40 corded wall chaser, equipped with a 2000 W brushless motor, is built for professionals who need excellent performance for tough jobs. Its robust yet compact design allows you to work close to edges, while clear markings help position cuts accurately. The ergonomic handle arrangement keeps you comfortable in all positions and directions, reducing strain during intensive use. With the GNF20-40, dust extraction is seamless thanks to the Bosch Professional Click & Clean interface, keeping your workspace cleaner. You can also easily adjust the cutting depth, cutting width, and change discs without the need for any additional tools, thanks to toolless operation of all tool settings. The GNF20-40 is ideal for use with two diamond cutting discs to mill grooves into walls or ceilings for flush-mounting cables, cable conduits, or water and heating pipes. With this corded wall chaser, you’ll be able to cut up to 40 mm deep with a smooth feed across masonry, sandstone, or concrete. For peace of mind, you can rely on the protective features of the GNF20-40 corded wall chaser - such as the PROtection switch, brake function, and restart protection. What's in the box: L-BOXX 238 (1 600 A01 2G2) 2 x diamond cutting discs, 150mm (2 608 615 061) Splitting tool (3 607 959 005).
The Bosch Wall Chaser GNF20-40 is designed for electricians and construction professionals needing to create precise grooves in masonry, sandstone, and concrete. Its key benefit is powerful, deep cutting up to 40mm with enhanced user comfort and integrated dust extraction. A potential caveat is its corded nature, requiring a power source.
All features
Model Part Number
06016C5170
Brand
Bosch
Extended Product Information
FAQs
What is the maximum cutting depth of the Bosch GNF20-40?
The Bosch GNF20-40 can cut grooves up to 40 mm deep.
Can I use this wall chaser without a dust extractor?
While the tool is designed for optimal performance with dust extraction via the Click & Clean interface, operation without it is possible but will result in significant dust generation.
What size diamond cutting discs are compatible?
The GNF20-40 is designed for use with 150mm diameter diamond cutting discs.
How do I adjust the cutting width?
The cutting width can be adjusted toollessly using the integrated adjustment mechanisms on the tool.
What materials can this wall chaser cut?
It is suitable for cutting into masonry, sandstone, and concrete.
What safety features are included?
The GNF20-40 includes a PROtection switch, brake function, and restart protection for enhanced user safety.
What comes in the box?
The box typically includes the L-BOXX 238, two 150mm diamond cutting discs, and a splitting tool.
Troubleshooting
Tool not powering on
Check if the power cord is securely plugged into a working outlet. Verify the PROtection switch is in the correct position.
Cutting depth inconsistent
Ensure the depth adjustment mechanism is functioning correctly and securely locked. Check for any obstructions around the cutting area.
Excessive dust despite extraction
Verify the dust extraction hose is properly connected to the Click & Clean interface and the vacuum unit is functioning. Clean or replace filters in the dust extractor.
Tool stops during operation
This could be due to overheating or overload. Allow the tool to cool down. Reduce the cutting depth or feed rate. Check for blockages in the cutting path or around the discs.
Difficulty changing discs
Ensure the tool is unplugged. Use the toolless adjustment feature to loosen and remove the disc retaining nuts. Make sure the spindle lock is engaged if necessary.
Pros and Cons
Pros
Powerful 2000 W brushless motor handles tough materials.
Deep cutting capability up to 40 mm.
Ergonomic design for comfortable extended use.
Integrated dust extraction system improves air quality.
Tool-free adjustments for depth, width, and disc changes.
Durable construction for demanding job sites.
Cons
Corded operation limits mobility compared to cordless models.
Requires a suitable power outlet at the work location.
May be heavier for prolonged overhead or awkward positioning.
Diamond cutting discs are consumables and require replacement.
Setup, Compatibility & Care
Setup:
Ensure the tool is unplugged before any adjustments or maintenance.
Install two 150mm diamond cutting discs, ensuring they are securely fastened.
Connect a compatible dust extraction system to the Bosch Professional Click & Clean interface.
Adjust the cutting depth and width using the toolless adjustment mechanisms as needed.
Compatibility:
Compatible with standard 150mm diamond cutting discs.
Requires a standard power outlet.
Designed to work with Bosch Professional dust extractors via the Click & Clean interface.
Care:
Regularly clean the tool, especially the ventilation slots, using a dry cloth or brush.
Check diamond cutting discs for wear and replace when necessary.
Ensure the dust extraction system is functioning correctly and its container is emptied regularly.
Store the tool in its provided L-BOXX when not in use.