SDS-plus® Hammers

GBH18V-26K25 Professional

SDS-plus® Hammers

18V Brushless SDS-plus® Bulldog™ 1 In. Rotary Hammer Kit with (2) CORE18V 4.0 Ah Compact Batteries

  • Legendary Bulldog™ performance – consistently outperforms best-selling corded 11255VSR Bulldog™, making it better than the best
  • Superior impact – delivers 1.9 Ft.-Lbs. of impact energy (EPTA) for heavy-duty drilling and chipping applications in concrete
  • Compact CORE18V – engineered to provide next-gen power and runtime, while losing the weight, for optimized performance
  • Efficient brushless motor – maximizes battery runtime in extended applications
  • KickBack Control technology – reduces the risk of sudden tool reactions in binding conditions
  • Lightweight, at only 7.4 Lbs. (with included battery) – for great performance-to-weight ratio
  • Robust power system – produces 0-4,350 no-load bpm and 0-890 no-load rpm
  • Vibration Control – affords greater user comfort for extended periods of work
  • Electronic Precision Control – provides slower ramp-up for accurate bit starts
  • High-power cells – combines enhanced 21700 cell technology with advanced battery design for greater efficiency
  • Bosch-exclusive CoolPack 2.0 technology – provides better cooling than previous-generation system, transferring more heat to the battery’s outer surface
  • Works with Bosch PRO+GUARD™ dust solutions – compatible with an optional dust-extraction unit, delivering a self-contained HEPA dust solution for max mobility
  • Electronic Motor and Cell Protection – helps protect motor and battery from overheating
  • 360° side handle – provides a variety of grip positions for maximum ergonomics
  • LED worklight – illuminates dark work areas
  • Bosch 18V cordless power tools and 18V chargers are covered by a five year limited warranty; Bosch 18V batteries are covered by a three year limited warranty – for details, visit or call 1-877-BOSCH99
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GBH18V-26K25 Professional

Technical data

The most important data

Battery Chemistry Lithium Ion
Battery/Charger Included
Chuck Design Keyless
Chuck Size 1 in
Drive System SDS-plus
Height in 8.9 "
Impact Energy/EPTA (ft. lbs.) 1.9 Ft.-Lbs. EPTA
Length in 13.7 "
Max Bit Diameter 1"
Max. Capacity in Concrete 1"
Max. Capacity in Steel 1/2"
Max. Capacity in Wood 1-1/4"
Max. Hole Diameter in Concrete 1"
Max. Hole Diameter in Concrete-Thin Wall Core Bit 2-5/8"
No Load BPM 0-4,350
No Load RPM 0-890
Reverse Yes
Variable Speed Yes
Weight 7.4 lb
Width in 3 "
Works With 18V On-Tool Dust Extractor, GDE18V-16, Other Dust Extraction/Collection Hoods, HDC100, HDC200, Right Angle Attachment, RHA-50, Keyless 3-Jaw Chuck with SDS-plus® Shank, HA3JAW
Includes (1) GBH18V-26 18V Brushless SDS-plus® Bulldog™ 1 In. Rotary Hammer
(2) GBA18V40 CORE18V Lithium-Ion 4.0 Ah Compact Batteries
(1) 18V Charger
(1) Auxiliary Handle
(1) Depth Gauge
(1) Carrying Case

GBH18V-26K25 Professional: Further information

Product Highlights

This Bosch 18V Bulldog™ hammer consistently outperforms the best-selling 1 In. corded 11255VSR Bulldog™, making it better than the best. The Bosch GBH18V-26K25 kit pairs two CORE18V 4.0 Ah Compact Batteries with an SDS-plus® Bulldog™ 1 In. Rotary Hammer that delivers 1.9 Ft.-Lbs. of impact energy (EPTA). The hammer’s brushless motor maximizes battery runtime for extended performance. It also has KickBack Control, an integrated sensor to stop tool rotation in bind-up situations; Electronic Precision Control, for smoother bit starts; and Vibration Control, for extended user comfort. It weighs only 7.4 Lbs. (with included battery). The kit features two CORE18V Compact Batteries, which deliver light weight and high power, and they are equipped with CoolPack technology for extended life. They are engineered with 21700 cell technology and advancements in design to reduce resistance and increase efficiency.

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