How accurate are rebar straightening and cutting machines?
Quick answer: a straightening and cutting machine holds about ±5 mm on cut length; a full shear line holds ±3 mm per metre; and a CNC vertical bending center holds ±1° on bend angle and ±1 mm on bend length.
Accuracy by machine: the YGT4-15A straightening and cutting machine cuts to ±5 mm; the GDQX-500 shear line cuts to ≤±3 mm/m over lengths from 500 to 12000 mm; the GDLWZX-32 vertical bending center bends to ±1° and ±1 mm for the tightest tolerance work.
What it means: for stirrups and ties, ±5 mm is normally fine. For cages, columns and precast where bars must line up exactly, the tighter tolerances of a shear line or CNC bender reduce rework and steel waste — so the machine you pick should match the tolerance your drawings specify.
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Machines in these answers
VFD Rebar Straightening & Cutting Machine
VFD-controlled rebar straightening and cutting machine for 4-15 mm bars with hydraulic cutting and ±5 mm accuracy.
| Straightening rebar diameter | Round bar / 4-15mm |
|---|---|
| Straightening rebar diameter | Deformed bar / 4-13mm |
| Shearing length | 500-8000mm |
| Rebar cutting accuracy | ±5mm |
| Straightening line speed | 0-80m/min |
Hydraulic Rebar Shearing Production Line
High-capacity hydraulic rebar shearing production line for cutting ribbed and round bars in mass production.
Vertical CNC Rebar Bending Center
Vertical CNC rebar bending center for high-precision bending of bars from 10 to 32 mm with automated positioning.