Machine Guard Polycarbonate Thickness Selection
| Guard type | Recommended thickness | Standard / note |
|---|---|---|
| Light guards (swarf, splash) | 4 mm solid PC | ISO 14120 light impact |
| Medium guards (small parts) | 6 mm solid PC | ISO 14120 medium impact |
| Heavy guards (robots, presses) | 10 mm solid PC | ISO 14120 high impact |
| Scratch-prone / cleaned often | Hard-coated PC (MR5E-class) | Taber <8% haze, half MR5E price |
We CNC cut, drill, chamfer and edge-polish guard panels to your drawings (±0.1 mm), and can supply hinged/panel assemblies with fixings. Send DXF/DWG for a quote — typically returned within 24 hours.
What thickness polycarbonate is used for machine guards?
4 mm for light guards, 6 mm for medium, 10 mm for high-impact applications per ISO 14120. Hard-coated PC is recommended where panels are cleaned frequently.
Do you cut machine guard panels to size?
Yes — CNC cutting, drilling, chamfering and edge polishing to your drawings, with protective film kept on during machining and removed at install.
Are polycarbonate machine guards ISO 14120 compliant?
Polycarbonate is the standard impact-rated material for machine guards under ISO 14120 and similar standards; we supply impact test documentation with your batch.





