Key facts
Start here

Bosch GBM 23-2 Professional User Manual
This manual contains the general safety rules for using the Bosch GBM 23-2 Professional power tool, including work‑area safety, electrical safety, personal protective equipment, and tool‑specific warnings. It also explains proper handling, maintenance, and service procedures to keep the tool operating safely.
Technical data for the GBM 23-2 are listed, covering power input, output power, speeds, torque, drilling capacities for different materials, tool holder type, and weight. The document serves as the primary reference for users and service technicians working with this model.
Bosch GBM 23-2 specifications
| Rated power input | 1150 W |
|---|---|
| Output power | 670 W |
| No‑load speed (1st gear) | 400 rpm |
| No‑load speed (2nd gear) | 920 rpm |
| Rated speed (1st gear) | 280 rpm |
| Rated speed (2nd gear) | 640 rpm |
| Rated torque (1st/2nd gear) | 23/10 Nm |
| Maximum drilling diameter – Steel | 23/13 mm |
| Maximum drilling diameter – Wood | 50/35 mm |
| Maximum drilling diameter – Aluminum | 28/18 mm |
| Tool holder | MK 2‑DIN 228 |
All Bosch GBM 23-2 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the rated power input of the GBM 23-2?
The rated power input is 1150 W.
What is the maximum drilling diameter in wood for the GBM 23-2?
The tool can drill up to 50 mm in wood in 1st gear and 35 mm in 2nd gear.
