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What is the largest rebar diameter a cutting machine can cut?

Quick answer: our GQ70A cuts up to 70 mm A3 round steel, with a shearing force under 160 t. For ribbed rebar the ceiling is lower: 55 mm (Grade II), 50 mm (Grade III) and 45 mm (Grade IV) — the harder the steel, the lower the safe cutting diameter.

Capacity by machine: the GQ50A handles 6–50 mm and suits everyday site cutting; the GQ70A handles the 50–70 mm range and is the machine for heavy structural work. Both are 380 V / 50 Hz with 5.5 kW and 11 kW motors respectively.

What to check: cutting capacity is quoted for A3 mild steel by convention. If your drawings call for Grade III or IV rebar, derate the number and tell us the grade so we confirm the right machine. The blade stroke also matters — 70 mm on the GQ70A versus 40 mm on the GQ50A.

Compare the GQ70A and GQ50A, or message us your maximum rebar grade and diameter on WhatsApp.

Machines in these answers

GQ70A

Rebar Cutting Machine

Powerful rebar cutting machine for bars up to 70 mm (A3 round steel) with 160-ton shear force.

Bar diameter cut A3 round bar / 70mm
Rebar grade II (deformed) 55mm
Rebar grade III (deformed) 50mm
Rebar grade IV (deformed) 45mm
Moving blade strokes 26/min