Tools / Saws
Bosch 18V-57 G Professional Cordless Circular Saw User Manual
Quick guide for the Bosch 18V-57 G Professional cordless circular saw, covering battery installation, blade replacement, cutting depth and angle adjustments, and safety procedures.
Table of contents
Quick guide from the manual
This manual provides essential instructions for the safe and efficient operation of the Bosch 18V-57 G Professional cordless circular saw. Always remove the battery before performing maintenance, changing accessories, or transporting the tool to prevent accidental startup.
Device Description
The GKS 18V-57 G is a cordless circular saw designed for straight and miter cuts in wood. Key components include the lock-off button, worklight, spindle lock, base plate, parallel guide, and dust extraction adapter.
Battery Operation
The tool uses Bosch 18V Li-ion batteries. The battery is partially charged upon delivery; charge it fully before first use. The battery features an Electronic Cell Protection (ECP) system to prevent deep discharge. Check the charge level using the button and LEDs on the battery.
Blade Replacement
- Remove the battery.
- Place the saw on the front side of the motor housing.
- Press and hold the spindle lock button.
- Use the hex key to unscrew the clamping bolt.
- Swing the retracting blade guard back and hold it.
- Remove the clamping flange and the saw blade.
- Clean the blade and clamping elements.
- Install the new blade, ensuring the teeth direction matches the arrow on the guard.
- Reinstall the clamping flange and tighten the bolt (6–9 Nm).
Operation
Setting Cutting Depth: Loosen the clamping lever, adjust the saw position relative to the base plate, and retighten the lever.
Setting Miter Angle: Loosen the wing bolts, tilt the saw to the desired angle on the scale, and retighten the bolts.
Dust Extraction: Attach the dust extraction adapter to the chip ejector and secure it with the screw. A 35 mm extraction hose can be connected.
Maintenance and Cleaning
Keep the tool and ventilation slots clean for safe operation. Ensure the retracting blade guard moves freely and closes automatically. Clean resin or glue residue from the blade immediately after use.
Manufacturer information
Bosch
Practical help
Common problems
Battery charge indicator LEDs do not light up after pressing the button.
The battery is defective and must be replaced.
Dust extraction adapter is clogged.
Regularly clean the dust extraction adapter and ensure it is not used without an external extraction system.
Saw blade binds or kicks back.
Ensure the blade is sharp, the cutting depth is correctly adjusted, and the workpiece is securely supported.
Before use
- Ensure the battery is fully charged.
- Check that the lower blade guard moves freely and closes automatically.
- Verify the saw blade is sharp and suitable for the material.
- Ensure all locking levers for depth and bevel are tight.
- Check that the workpiece is securely clamped.
Specs in practice
- No-load speed (3400 min-1)
- The speed of the blade when not cutting; ensures efficient material removal.
- Max cutting depth (57 mm at 0°)
- The maximum thickness of material the saw can cut at a right angle.
- Blade diameter (165 mm)
- The size of the blade required for this tool.
Model compatibility
- Compatible with Bosch 18V GBA and ProCORE18V batteries.
- GKS 18V-57 G model is compatible with the FSN guide rail system.
- Do not use HSS steel saw blades.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.