GKM 18V-50 Metal Cutting Saw
Metal Cutting Saws · Bosch 18V Professional
Bosch GKM 18V-50 Professional 136mm Metal-Cutting Circular Saw (Body Only)
18V 136mm metal-cutting circular saw. 50mm cut depth in STEEL (ferrous), 4250rpm, 2.2kg. Spark-free chip box, LED, cut-line indicator, saw hook. Standard-for-Steel blade. Bare (cardboard).
Where it sits among metal cutting saws
Against the 7 metal cutting saws we list. Not a score: bigger isn't always better for your job.
Full specs
From Bosch's own documentation. Checked 21/06/2026. Report a spec error ›
Cutting
Power & Motor
Dust & Extraction
Physical & Build
Bosch's cordless metal-cutting saw, a 136mm tool built for steel rather than timber. On spec it cuts to 50mm in steel at 4250rpm and collects hot chips in an enclosed box, with a near spark-free cut and a cut-line window for accuracy. It does not bevel and has no wood-cutting role, so it is firmly a metalwork tool on the 18V Professional platform. At 2.2kg it is reasonably compact for the type. One for steel studs, sections and trades that cut metal day in, day out.
Powered by Bosch 18V Professional · 13
All 13 batteries that fit this tool, smallest first. Kits and chargers ›
PROCORE18V-40 4.0Ah · 72Wh
0.52kg
2.72kg
from £54.99at Tooled Up + £6.95 delivery
View at Tooled Up ›
GBA18V-40 4.0Ah · 72Wh
0.6kg
2.8kg
from £73.99at Machine Mart + £4.99 delivery
View at Machine Mart ›
GBA18V-50 5.0Ah · 90Wh
0.62kg
2.82kg
from £85.00at Machine Mart + £4.99 delivery
View at Machine Mart ›
EXBA18V-80 8.0Ah · 144Wh
1.04kg
3.24kg
from £182.95at 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
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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