# Technical Data

Cordless rotary hammer | GBH 18V-28 C | GBH 18V-28 CF
--- | --- | ---
Article number |  | ‎‎‎ 3 611 J20 0..‎‎ | ‎‎‎ 3 611 J21 0..‎
Speed control |  | ● | ●
Stop rotation |  | ● | ●
Clockwise/anticlockwise rotation |  | ● | ●
Quick-change chuck |  | – | ●
Rated voltage | V= | 18 | 18
Impact rateA) | min–1 | 0–4220 | 0–4220
Impact energy per stroke according to EPTA-Procedure 05:2016 | J | 3.3 | 3.3
No-load speedA)
Clockwise | min–1 | 0–950 | 0–950
Anticlockwise | min–1 | 0–950 | 0–950
Tool holder |  | SDS plus | SDS plus
Spindle collar diameter | mm | 50 | 50
Max. drilling diameter:
Concrete | mm | 28 | 28
Masonry (with hollow core bit) | mm | 82 | 82
Steel | mm | 13 | 13
Wood | mm | 30 | 30
Weight without battery | kg | 3.3 | 3.4
WeightB) | kg | 3.7–4.7 | 3.8–4.8
Length | mm | 349 | 378
Height | mm | 225 | 225
Width | mm | 92 | 92
Recommended ambient temperature during charging | °C | 0 to +35 | 0 to +35
Permitted ambient temperature during operationC) and during storage | °C | –15 to +50 | –15 to +50
Compatible rechargeable batteries |  | GBA 18V... ProCORE18V... | GBA 18V... ProCORE18V...
Recommended rechargeable batteries |  | GBA 18V... ≥ 5.0 Ah ProCORE18V... ≥ 4.0 Ah | GBA 18V... ≥ 5.0 Ah ProCORE18V... ≥ 4.0 Ah
Recommended chargers |  | GAL 18... GAX 18... GAL 36... | GAL 18... GAX 18... GAL 36...

A)

  Measured at 20–25 °C with rechargeable battery ProCORE18V 4.0Ah.

B)

  Depends on battery in use

C)

  Limited performance at temperatures < 0 °C

Values can vary depending upon the product and are subject to application and environmental conditions. For further information www.bosch-professional.com/wac.