Cordless Rotary Hammers

GBH18V-34CQB24 Professional

Cordless Rotary Hammers

PROFACTOR™ 18V Connected-Ready SDS-plus® Bulldog™ 1-1/4 In. Rotary Hammer with (2) CORE18V® 8 Ah High Power Batteries

  • PROFACTOR™ performance – delivers corded hammer performance for an 18V 1-1/4 In. SDS-plus® rotary hammer
  • Superior impact – delivers 4.3 Ft.-Lbs. of impact energy (EPTA) for full performance in concrete when drilling and chiseling
  • Quick-release chuck – allows for seamless change of the chuck from SDS-plus® to a three-jaw chuck
  • BITURBO Brushless™ Technology – featuring a brushless high-performance motor and drive-train system engineered to take full advantage of the additional power generated by CORE18V® High Power batteries
  • CORE18V® High Power 8 Ah battery – compatible with Bosch 18V tools and delivers 2x more runtime than GBA18V40
  • PROFACTOR optimized – designed to deliver the power and runtime needed by PROFACTOR tools with BITURBO Brushless technology for the toughest applications
  • High-power battery turbo charger – provides fast and faster charging with optional Power Boost™ mode
  • Power-Boost mode – boosts electrical current charging to 50% in the shortest time
  • KickBack Control technology – reduces the risk of sudden tool reactions in binding conditions
  • User interface – on-tool display helps manage tool performance for immediate feedback and control
  • Anti-vibration system – helps reduce vibration with a longer air cushion in the hammer tube and dampeners in the handle
  • Vario-Lock positioning – rotates and locks chisel to optimize working angle
  • Soft Start and controlled rpm – adjusts rpm and bpm for controlled drilling and chiseling applications in softer materials such as brick or tile
  • Reverse setting – provides easy removal if the bit gets jammed in concrete
  • Connectivity (module sold separately) – link to connected device via Bosch Toolbox App to customize settings and receive detailed feedback
  • AMPShare™ System – designed to be multi-brand compatible across many cordless products to make managing your work day easier
  • AMPShare™ System compatibility – 18V batteries and chargers are compatible with Bosch 18V power tools and a growing list of cordless products from AMPShare™ brands
  • 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
  • All Bosch 18V PROFACTOR™ cordless power tools are backed by a 180-day no-questions-asked return guarantee
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GBH18V-34CQB24 Professional

Technical data

The most important data

Battery Chemistry Lithium Ion
Battery/Charger Included
Chuck Design Keyless
Drive System SDS-plus
Height in 9.8 "
Impact Energy/EPTA (ft. lbs.) 4.3
Length in 17 "
Max Bit Diameter 1-1/4"
Max. Hole Diameter in Concrete 1-1/4"
No Load BPM 0-2,900
No Load RPM 0-500
Reverse Yes
Variable Speed Yes
Weight (lbs.) 10.8
Width in 3.7 "
Works With Recommended Battery Packs to help achieve maximum tool performance, GBA18V60, GBA18V80 and GBA18V120 Batteries, Bosch Bluetooth® Connectivity Module, GCY42 (See tool manual for its connectivity/app features.), Dust Extraction/Collection Hoods, HDC200, HDC250, HDC300, SDS-max® Hammer Adapter for SDS-plus® Accessories, HA1030, SDS-max® Hammer Adapter for Spline Accessories, HA1031, SDS-max® Hammer Adapter for 1/2"-20 Thread Accessories, HA1032
Includes (1) GBH18V-34CQ PROFACTOR™ 18V Connected-Ready SDS-plus® Bulldog™ 1-1/4 In. Rotary Hammer
(2) GBA18V80 18V CORE18V® Lithium-Ion 8 Ah High Power Batteries
(1) GAL18V-160C 18V Connected-Ready Lithium-Ion 16 Amp Battery Turbo Charger
(1) Auxiliary Handle
(1) Carrying Bag

GBH18V-34CQB24 Professional: Further information

Product Highlights

This 18V SDS-plus® Bulldog™ 1-1/4 In. rotary hammer is powerful enough to provide corded-type performance for tackling heavy-duty concrete drilling or chiseling jobs. The Bosch GBH18V-34CQ Rotary Hammer delivers 4.3 Ft.-Lbs. of impact energy (EPTA). That is unprecedented for a single 18V battery-driven SDS-plus® 1-1/4 In. rotary hammer. It weighs 10.8 Lbs. (tool only, not including battery). This hammer is part of the PROFACTOR™ System, which pairs BITURBO Brushless™ Technology with a CORE18V® High Power Battery. BITURBO Brushless™ Technology is a high-performance motor and drive-train system designed to deliver power comparable to high-demand corded tools. The anti-vibration system helps reduce vibration with a longer air cushion in the hammer tube and dampeners in the handle. The hammer has KickBack Control, a quick-release chuck, rotary hammer and hammer-only modes, a reverse setting and Vario-Lock to rotate and lock the chisel. The hammer features an on-tool user interface for tool performance, feedback and control. It has connectivity (module sold separately) to link to connected device via Bosch Toolbox App to customize settings and receive detailed feedback. The kit includes two CORE18V® 8 Ah High Power Batteries, which each deliver 50% more runtime and over 75% more power than the CORE18V® 4 Ah battery, powering high-demand applications. The GAL18V-160C battery turbo charger provides 16-amp charging current for fast and faster charging, with an optional Power Boost™ mode.

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