Slitting Blade

High-Precision Slitting Bottom Knives / Multi-Groove Sleeves: Benchmark Anvil Base for Narrow-Web Precision Tooling

Yuan Li Knife develops and manufactures solid multi-groove anvil sleeves (multi-groove anvil rollers) and precision individual female bottom knives designed specifically for electronic films, narrow-width adhesive tapes, and metal foil slitting production lines.

In shear slitting, the bottom knife (female blade) not only supports the lateral shear load from the top knife, but also directly determines slitting width accuracy and cumulative setup tolerances across multi-blade configurations. Uneven groove widths or rapid edge wear will quickly cause the bottom anvil to lose shear edge support, leading to material pinching and jamming inside blade gaps. Yuan Li bottom slitter knives feature exceptional wear resistance, high rigidity, and micron-level groove-pitch machining accuracy, ensuring precise, uniform slit widths throughout prolonged production runs.

Core Engineering Features of Yuan Li Bottom Slitter Knives

• Ultra-Precision Cumulative Pitch Tolerance Control: Groove-to-groove pitch tolerances on solid multi-groove sleeves (shaft-type anvil rollers) are held within ±0.003 mm, eliminating cumulative dimensional stack-up errors inherent to traditional blade-and-spacer assemblies.
• Premium Wear-Resistant Alloy Tool Steel & Surface Hardening: Crafted from D2/SKD-11, high-chromium tool steels, or tungsten carbide, subjected to multiple tempering cycles and cryogenic treatment. Cutting edges provide extreme wear resistance and eliminate edge deformation or collapse.
• Micron-Level Concentricity and Radial Runout Balance: Outer diameter concentricity is held to strict tolerances, eliminating lower shaft vibration during high-speed rotation and maintaining smooth, stable shearing lines.