The Bosch GBH18V-26K25 is an 18V brushless SDS-plus rotary hammer rated by Bosch to outperform its own corded 11255VSR Bulldog™ in drilling performance. It delivers 1.9 ft.-lbs. of EPTA impact energy, 0–890 no-load RPM, and 0–4,350 no-load BPM through an SDS-plus chuck, with a maximum 1 in. drilling capacity in concrete. The kit includes two CORE18V 4.0 Ah compact batteries, an 18V charger, an auxiliary handle, a depth gauge, and a carrying case. KickBack Control and Vibration Control reduce sudden reactions and user fatigue. Compatible with all Bosch 18V cordless tools. Tool and charger carry a 5-year limited warranty; batteries carry a 3-year limited warranty.
How does the GBH18V-26K25 compare to a corded rotary hammer?
Bosch rates it as consistently outperforming the corded 11255VSR Bulldog™ in real-world drilling. Users report it handles concrete drilling with power comparable to or better than their previous corded models.
What size holes can it drill in concrete?
Up to 1 in. in solid concrete using standard SDS-plus bits, and up to 2-5/8 in. using a thin-wall core bit. Maximum capacity is 1/2 in. in steel and 1-1/4 in. in wood.
What comes in the kit?
The GBH18V-26K25 includes the rotary hammer, two CORE18V 4.0 Ah compact batteries, an 18V charger, a 360° auxiliary handle, a depth gauge, and a carrying case.
Are the included batteries compatible with other Bosch 18V tools?
Yes. The CORE18V 4.0 Ah batteries work with all Bosch 18V cordless tools and chargers, making them a practical addition to an existing Bosch 18V system.
Does it have safety and comfort features for extended use?
Yes. KickBack Control reduces sudden tool reactions if a bit binds, and Vibration Control lowers fatigue during longer drilling sessions. Electronic Precision Control also allows slower ramp-up for accurate bit starts.
What warranty does the GBH18V-26K25 carry?
The tool and charger are covered by Bosch's 5-year limited warranty. The CORE18V batteries carry a separate 3-year limited warranty.
# Bosch GBH18V-26K25 18V Brushless SDS-plus® Bulldog™ 1 In. Rotary Hammer Kit with (2) CORE18V 4.0 Ah Compact Batteries **Model:** `GBH18V-26K25` **Brand:** Bosch **Category:** Rotary Hammer > The Bosch GBH18V-26K25 is an 18V brushless SDS-plus rotary hammer rated by Bosch to outperform its own corded 11255VSR Bulldog™ in drilling performance. It delivers 1.9 ft.-lbs. of EPTA impact energy, 0–890 no-load RPM, and 0–4,350 no-load BPM through an SDS-plus chuck, with a maximum 1 in. drilling capacity in concrete. The kit includes two CORE18V 4.0 Ah compact batteries, an 18V charger, an auxiliary handle, a depth gauge, and a carrying case. KickBack Control and Vibration Control reduce sudden reactions and user fatigue. Compatible with all Bosch 18V cordless tools. Tool and charger carry a 5-year limited warranty; batteries carry a 3-year limited warranty. ## Specifications | Attribute | Value | |---|---| | Product Type | Rotary Hammer | | Voltage (V) | 18 | | Cordless / Corded | Cordless | | Power Source | Battery | | Motor Type | Brushless | | Tool Only | No | | Batteries Included | 2 | | Charger Included | Yes | | Piece Count | 6 | | Height (in.) | 8.9 | | Length (in.) | 13.7 | | Weight (lbs) | 7.4 | | Width (in.) | 3 | | Battery Platform | CORE18V | | Battery Amp Hours | 4 | | Drive System | SDS-plus | | Chuck Type | Keyless SDS-plus | | No Load Rpm | 890 | | No Load Bpm | 4,350 | | Impact Energy Ft Lbs Epta | 1.9 | | Max Bit Diameter In | 1 | | Max Capacity Concrete In | 1 | | Max Capacity Steel In | 0.5 | | Max Capacity Wood In | 1.25 | | Variable Speed | Yes | | Reverse | Yes | | Kickback Control | Yes | | Vibration Control | Yes | | Led Worklight | Yes | | Warranty | 5-year limited (tool + charger); 3-year limited (battery) | ## What's Included - (1) GBH18V-26 18V Brushless SDS-plus® Bulldog™ 1 In. Rotary Hammer - (2) GBA18V40 CORE18V 4.0 Ah Compact Batteries - (1) 18V Charger - (1) 360° Auxiliary Handle - (1) Depth Gauge - (1) Carrying Case Source: https://www.jaspecs.com/bosch/rotary-hammer/gbh18v-26k25-bosch-18v-brushless-sds-plus-bulldog-1-in-rotary-hammer-kit/