# Technical Data

Cordless Rotary Hammer |  | GBH 187-LI
--- | --- | ---
Article number |  | ‎3 611 J23 1..‎
Rated voltage | V= | 18
Rated speed
Clockwise | min–1 | 0−980
Anticlockwise | min–1 | 0−980
Impact rateA) | min–1 | 0−4350
Tool holder |  | SDS plus Cylindrical Hexagonal
Drill chuck clamping range for cylindrical shanks | mm | 6–10
Max. drilling diameter
ConcreteB) | mm | 24
Steel | mm | 13
Wood | mm | 30
WeightC) | kg | 3.6–4.5
Recommended ambient temperature during charging | °C | 0 to +35
Permitted ambient temperature during operationD) and during storage | °C | −20 to +50
Recommended rechargeable batteries |  | GBA 18V... ≥ 4.0 Ah ProCORE18V... 8.0 Ah/12.0 Ah
Recommended battery chargers |  | GAL 18... GAX 18... GAL 36...
Data Transfer
Bluetooth® |  | Bluetooth® 4.2 (Low Energy)E)
Max. signal range | m | 30F)
Frequency range used | MHz | 2400–2483.5
Output power | mW | < 1
Energy supply Bluetooth® Low Energy module
Coin cell |  | 3 V lithium battery, CR 2450
Coin cell service life, approx. | Years | 5

A)

  Measured at 20–25 °C with rechargeable battery ProCORE18V 12.0Ah

B)

  optimum performance with drilling diameter 6−14 mm

C)

  Depending on battery in use

D)

  Limited performance at temperatures < 0 °C

E)

  The mobile devices must be compatible with Bluetooth® Low Energy devices (version 4.2) and support the Generic Access Profile (GAP).

F)

  The signal range may vary greatly depending on external conditions, including the receiving device used. The Bluetooth® range may be significantly weaker inside closed rooms and through metallic barriers (e.g. walls, shelving units, cases, etc.).

Values can vary depending on the product, scope of application and environmental conditions. To find out more, visit www.bosch-professional.com/wac.