Baler shear blades

Two blades can share the same steel and hardness yet cut completely differently — because the difference is in the manufacturing precision. Thickness tolerance, flatness, surface finish, and edge sharpness decide whether the blade holds its 5–10% cutting clearance or drifts into burrs and scrap. This 2026 spec guide turns those numbers into a matrix you can put on a purchase order. Bottom line: specify blades to thickness tolerance ±0.01–0.02 mm, flatness ≤0.05 mm/m, surface roughness Ra ≤0.2 µm, and edge radius 0.02–0.05 mm; these four numbers predict cut quality and life better than any marketing adjective. GOOD-KNIFE holds and certificates every one of them per batch. Key Takeaways Tolerance ±0.01–0.02 mm keeps the running cle...