Bosch GRW 18V-160 Professional Cordless Stirrer User Manual
Quick guide for the Bosch GRW 18V-160 Professional cordless stirrer. Includes assembly, operation, speed settings, safety instructions, and maintenance.
Quick answers from the manual
Quick answer
- The Bosch GRW 18V-160 is a cordless stirrer designed for mixing powdered building materials (mortar, plaster, adhesives) and non-solvent-based paints, varnishes, and similar substances. p. 6, 12
Key actions
- Insert the battery into the battery holder until it clicks into place. p. 7, 13
- Attach the mixer paddle to the drive spindle. p. 8, 14
- Start the tool by pressing the lock-off button and then the on/off switch. p. 8, 14
First start
- Fully charge the battery before using the tool for the first time. p. 7, 13
Problems and fixes
The power tool cannot be switched on. Have the power tool serviced by a qualified repair person using only original replacement parts.
p. 9, 15The battery is defective and must be replaced.
p. 7, 13Maintenance and reset
- Remove the battery before any work on the tool (maintenance, tool change, etc.). Keep the tool and ventilation slots clean. p. 9, 15
Technical specifications
| Parameter | Value | Meaning | Pages |
|---|---|---|---|
| Rated voltage | 18 V | Operating voltage | p. 6, 12 |
| No-load speed (1st gear) | 0–530 min⁻¹ | Speed range for tough/solid materials | p. 6, 12 |
| No-load speed (2nd gear) | 0–720 min⁻¹ | Speed range for light/liquid materials | p. 6, 12 |
| Tool holder | M14 | Connection type for mixer paddle | p. 6, 12 |
| Weight | 4.8 kg | Weight without battery | p. 6, 12 |
Where to find it in the PDF
- Safety Instructions p. 4, 5, 10, 11
- Technical Data p. 6, 12
- Operation p. 8, 9, 14, 15
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
This manual provides instructions for the Bosch GRW 18V-160 Professional cordless stirrer. Key operations include battery management, assembly of the mixer paddle, and safe operation using the gear selector and speed controls.

Product Description
The tool is designed for mixing powder-based construction materials like mortar, plaster, adhesives, and non-solvent paints.
Assembly
Using the Extension Piece: The 7 cm extension piece (10) increases the working height for ergonomic use. Screw it onto the drive spindle (9) and tighten with the open-ended spanner (11).

Changing the Mixer Paddle: Screw the mixer paddle (12) into the drive spindle (9). Hold the spindle with an open-ended spanner (22 mm) and tighten the paddle with a second spanner (22 mm or 24 mm).
Operation
Starting: Press the lock-off button (1), then press and hold the on/off switch (3).

Gear Selection: Use the gear selector (7) only when the tool is at a standstill. Gear 1 (low speed, high torque) is for tough materials; Gear 2 (high speed, low torque) is for light/liquid materials.
Speed Adjustment: Regulate speed by varying pressure on the on/off switch (3) or by using the speed preselection thumbwheel (5).
KickBack Control: If the tool suddenly rotates around the axis, the rapid shut-off function triggers, and the LED (6) flashes red. Release and press the switch again to restart.
Maintenance
Always remove the battery before any work on the tool. Keep the tool and ventilation slots clean for safe operation.
Manufacturer information
Bosch
Practical help
Common problems
The rapid shut-off function has been triggered. Release the on/off switch and press it again to restart.
If the KickBack Control function is faulty, the tool cannot be switched on. Have it serviced by a qualified repair person.
The battery has deteriorated and must be replaced.
Before use
- Ensure the battery is fully charged.
- Check that the mixer paddle is securely attached.
- Ensure the mixing container is in a firm and secure position.
- Wear appropriate personal protective equipment (eye protection, dust mask).
- Check that the gear selector is in the correct position for the material.
Specs in practice
- KickBack Control
- Rapid shut-off function for user protection if the tool suddenly rotates around the axis.
- Constant Electronic
- Maintains constant speed under load for uniform performance.
Images and diagrams
- (1) Lock-off button
- (3) On/off switch
- (7) Gear selector
- (9) Drive spindle
- (12) Mixer paddle
Model compatibility
- Compatible with GBA 18V and ProCORE18V batteries.
- Recommended for full performance: ProCORE18V ≥ 5.5 Ah.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.