Tools / Power Tools
Bosch GDS 18V-320 C / 18V-330 HC Cordless Impact Wrench User Manual
Quick guide for the Bosch GDS 18V-320 C and GDS 18V-330 HC cordless impact wrenches. Includes setup, operation, speed/mode selection, maintenance, and troubleshooting.
Table of contents
Quick guide from the manual
This manual provides essential instructions for the Bosch GDS 18V-320 C and GDS 18V-330 HC cordless impact wrenches. The tool is designed for driving and loosening screws and bolts, as well as tightening and loosening nuts within the specified dimensions. Key features include Bluetooth connectivity for data transfer and settings adjustment via the Bosch Toolbox app.
Device Description
The tool features a tool holder (1), a rotational direction switch (2), a belt clip (4), and a user interface (7) for speed and mode selection. The GDS 18V-330 HC uses a 1/2" tool holder, while the GDS 18V-320 C uses a 3/8" tool holder.
Operation
The tool operates in two phases: screwing in and tightening (impact mechanism in action). The impact mechanism activates when the screw connection becomes tight, converting motor power into rotary impacts. To change the rotational direction, use the switch (2). Speed and impact rate can be adjusted by varying the pressure on the on/off switch (8).
User Interface and Settings
The user interface (7) allows for speed preselection (3 stages) and working mode selection (A and B). These settings can also be managed via the Bosch Toolbox app. Status indicators (11) provide information on tool health, temperature, and connectivity.
Maintenance and Safety
Always remove the battery before performing maintenance, changing tools, or transporting the device. Keep the air vents clean to prevent dust accumulation, which can cause electrical hazards. Use only original spare parts for repairs.
Troubleshooting
If the status indicator (11) shows yellow, the tool is at a critical temperature or the battery is low; run the tool at no load to cool it down or charge the battery. If it shows red, the tool is overheated or the battery is empty; allow it to cool or replace/charge the battery.
Manufacturer information
Bosch
Practical help
Common problems
Status indicator (11) is yellow
Critical temperature reached or battery low. Run tool at no load to cool down or replace/charge battery.
Status indicator (11) is solid red
Tool overheated or battery empty. Allow tool to cool down or replace/charge battery.
Tool does not start
Check if the battery is inserted correctly and charged. Ensure the rotational direction switch is not in the middle position.
Before use
- Ensure the battery is fully charged.
- Check that the correct tool bit is securely attached to the tool holder.
- Verify the rotational direction switch is set correctly.
- Ensure the work area is clean and well-lit.
- Wear appropriate personal protective equipment (eye protection, etc.).
Specs in practice
- No-load speed
- The rotational speed of the tool without any load, adjustable in 3 settings.
- Max. tightening torque
- The maximum force the tool can apply to tighten a bolt or nut.
Model compatibility
- Compatible with Bosch 18V GBA and ProCORE18V batteries.
- Compatible with Bosch GAL, GAX, and GAL 36 series chargers.
- Bluetooth Low Energy Module enables data transfer to mobile devices via the Bosch Toolbox app.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.