Specs from the makers' own documentation Battery compatibility built in UK retailer prices, updated daily 25+ years of trade experience
‹ SDS+ Hammer Drills
18V Professional · Brushless
GBH 18V-34 CF Sds+ hammer drill No product photo yet
SDS+ Hammer Drills · Bosch 18V Professional

Bosch GBH 18V-34 CF Professional Brushless Quick-Change Chuck SDS+ Rotary Hammer (Body Only, Carry Case)

18V BITURBO brushless SDS+ rotary hammer with 5.8 J impact energy and a quick-change chuck system, supplied in a case with a Bluetooth module. Auto, Favorite and Soft modes.

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5.8J
Impact energy
32mm
Max hole, concrete
2,900bpm
Impact rate
5kg
Weight (bare)

Where it sits among sds+ hammer drills

Against the 124 sds+ hammer drills we list. Not a score: bigger isn't always better for your job.

Impact energy5.8J
1J lowestMakita HR140Dhighest 5.8JThis one
Max hole, concrete32mm
Impacts per minute2,900
2,900 lowestThis onehighest 6,000Einhell TE-HD 18/12 Li
Weight (bare)5kg
1.5kg lightestEinhell TE-HD 18/12 Liheaviest 6.1kgEinhell RT-RH 32

Full specs

From Bosch's own documentation. Checked 03/10/2026. Report a spec error ›

Hammer & Drilling

Chuck systemSDS+
Impact energy5.8 J
Measured to EPTA✓ Yes
Impact rate2,900 bpm
No-load speed0–500
Max hole, concrete32 mm
Max core cutter82 mm
Max hole, wood40 mm
Max hole, steel13 mm

Modes & Handling

ModesAuto, Favorite and Soft working modes
Chisel only✓ Yes
Reduced or variable impact✓ Yes
Quick-change chuck✓ Yes
BodyL-shape
Soft start✓ Yes

Power & Motor

Voltage18V
MotorBrushless

Physical & Build

Weight (bare)5 kg
Weight (with battery)5.6 kg
Case typeCarry case
Case modelCarrying case (spare part 1 605 438 1G2)
Case included✓ Yes
Noise level95 dB(A) LpA / 103 dB(A) LwA
Vibration (hammer drilling)10.9 m/s²
Vibration (chiselling)11.7 m/s²

Powered by Bosch 18V Professional · 13

All 13 batteries that fit this tool, smallest first. Kits and chargers ›

GBA18V-20 2.0Ah · 36Wh 0.35kg 5.35kg £56.99at Machine Mart + £4.99 delivery View at Machine Mart ›
GBA18V-30 3.0Ah 0.6kg 5.6kg No retailer price yet About this battery ›
PROCORE18V-40 4.0Ah · 72Wh 0.52kg 5.52kg from £54.99at Tooled Up + £6.95 delivery View at Tooled Up ›
GBA18V-40 4.0Ah · 72Wh 0.6kg 5.6kg from £73.99at Machine Mart + £4.99 delivery View at Machine Mart ›
EXBA18V-40 4.0Ah · 72Wh 0.61kg 5.61kg No retailer price yet About this battery ›
GBA18V-50 5.0Ah · 90Wh 0.62kg 5.62kg from £85.00at Machine Mart + £4.99 delivery View at Machine Mart ›
PROCORE18V-55 5.5Ah · 99Wh 0.96kg 5.96kg No retailer price yet About this battery ›
EXBA18V-55 5.5Ah · 99Wh 1.02kg 6.02kg from £157.95at Tooled Up + £6.95 delivery View at Tooled Up ›

Tool weight worked out by adding each pack's weight to the bare tool, using the makers' figures. The maker's own with-battery figure can differ slightly. We may earn a commission on retailer links.

Warranty · 3yr

Up to 3 years1 year as standard, 3 once you register it with Bosch
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Register within 28 days of buying Own one? Add it to My Tools and we'll remind you before the 28 days run out

Register within 4 weeks. Batteries & chargers can also be extended (unlike DeWalt/Makita).

Warranty terms are set by the maker and can change. Always confirm current cover on their site before you buy.

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