Tools / Drills
Bosch GSR 18V-45 and GSB 18V-45 Cordless Drill Driver User Manual
Quick guide for the Bosch GSR 18V-45 and GSB 18V-45 cordless drill drivers, covering assembly, operation, safety instructions, and maintenance.
Table of contents
Quick guide from the manual
This document provides essential instructions for the Bosch GSR 18V-45 and GSB 18V-45 cordless drill drivers. Always remove the battery before performing any maintenance, changing tools, or transporting the device to prevent accidental activation.
Device Description
The tools are designed for driving and loosening screws and for drilling in wood, metal, ceramic, and plastic. The GSB model is additionally designed for impact drilling in brick, masonry, and stone.
Assembly and Operation
Charging the Battery: Use only the chargers listed in the technical data. The battery is supplied partially charged; fully charge it before first use.
Changing the Tool: The drill spindle is locked when the on/off switch is not pressed. Open the keyless chuck by turning it in the direction of rotation ➊, insert the tool, and firmly tighten the chuck by hand in the direction of rotation ➋.
Operation:
- Inserting the Battery: Push the charged battery into the base of the tool until it locks.
- Setting Rotational Direction: Use the rotational direction switch only when the tool is at a standstill.
- Setting Operating Mode: Use the torque presetting ring (GSR) or operating mode presetting ring (GSB) to select between drilling, screwdriving, or impact drilling (GSB only).
- Switching On/Off: Press and hold the on/off switch to start; release to stop.
Maintenance and Safety
Keep the tool and ventilation slots clean for safe operation. The LED worklight also serves as a status indicator: flashing 3x during operation indicates low battery; flashing 3x after stopping indicates active device protection.
Manufacturer information
Bosch
Practical help
Common problems
Tool does not start or stops during operation
Check battery charge level. If low, charge or replace the battery. If the device protection is active (flashing LED), allow the tool to cool down.
Drill bit or screwdriver bit slips
Ensure the keyless chuck is firmly tightened by hand. For larger screws in hard materials, pre-drill a pilot hole.
Before use
- Ensure the battery is fully charged.
- Check that the correct tool bit is securely inserted in the chuck.
- Set the correct rotational direction.
- Select the appropriate operating mode (drilling, screwdriving, or impact drilling).
- Ensure the gear selector is fully engaged.
Specs in practice
- Max. torque (hard)
- Maximum force for driving screws into hard materials (45 Nm).
- No-load speed
- Rotational speed without load (0-500 rpm in 1st gear, 0-1900 rpm in 2nd gear).
- Chuck capacity
- The range of drill bit shank diameters the chuck can hold (1.5-13 mm).
Model compatibility
- Compatible with all Bosch Professional 18V batteries (GBA 18V and ProCORE18V).
- Use only recommended Bosch chargers (GAL 18..., GAX 18..., GAL 36...).
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.