Power Tools for Professionals



PROFACTOR 18V Connected-Ready SDS-plus® 1-1/4 In. Rotary Hammer (Bare Tool)

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 1-1/4 In. SDS-plus® 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 PROFACTOR 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.

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  • (1) GBH18V-34CQ PROFACTOR 18V Connected-Ready SDS-plus® Bulldog™ 1-1/4 In. Rotary Hammer
  • (1) Auxiliary Handle


  • 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
  • Compact, lightweight design – weighs only 10.8 Lbs. (tool only, not including battery) and is 17 In. long for maneuverability
  • 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 PROFACTOR batteries (sold separately)
  • KickBack Control technology – reduces the risk of sudden tool reactions in binding conditions
  • Quick-release chuck – allows for seamless change of the chuck from SDS-plus® to a three-jaw chuck
  • 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
  • Robust power system – produces 0-2,900 no-load bpm and 0-500 no-load rpm
  • 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
  • Lock-on / lock-off button – keeps tool running when locked on (hammer-mode only) and prevents accidental activation of the trigger when locked off
  • LED worklight – illuminates dark work areas
  • 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
  • Works with Bosch PRO+GUARD™ dust solutions – an end-to-end dust-collection system that helps users move toward OSHA silica table 1 dust compliance
  • Bosch PROFACTOR™ cordless rotary hammers are backed by a 180-day no-question-asked return guarantee

Technical Data

Battery Chemistry Lithium Ion
Battery/Charger Not Included
Chuck Design Keyless
Drive System SDS-plus
Height 9.8"
Impact Energy/EPTA (ft. lbs.) 4.3 Ft.-Lbs. EPTA
Length 17.0"
Max Bit Diameter 1-1/4"
Max. Hole Diameter in Concrete 1-1/4"
Max. Hole Diameter in Concrete-Thin Wall Core Bit 3-1/2"
No Load BPM 0-2,900
No Load RPM 0-500
Weight (lbs.) 10.8
Width 3.7"
Works With Recommended Battery Packs to help achieve maximum tool performance
GBA18V80 and GBA18V120 PROFACTOR Batteries
Bosch Bluetooth® Connectivity Module
GCY42 (See tool manual for its connectivity/app features.)
Dust Extraction Hoods
HDC200, HDC250
Right Angle Attachment
Includes (1) GBH18V-34CQ PROFACTOR 18V Connected-Ready SDS-plus® Bulldog™ 1-1/4 In. Rotary Hammer, (1) Auxiliary Handle
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Owner's Manual


Accessories and Attachments For GBH18V-34CQN

18V Batteries, Chargers and Starter Kits
Adapters and Chucks
Rotary Hammer & Hammer Drill Attachments
SDS-plus® Bulldog™ Hammer Steel
SDS-plus® Bulldog™ Xtreme Hammer Steel
SDS-plus® Hammer Carbide
SDS-plus® Rebar Cutters


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