Esko Kongsberg BLD-SR6311 (Part Number: 42490110 for C2-coated / 42443101 for standard) is a round-shank static/oscillating solid tungsten carbide knife blade designed specifically for high-precision digital cutting systems (Kongsberg C, XP, X, XN, XL, and U series).

Technical Specifications

Key Features & Benefits

• C2 Coating Performance: The long-life C2 coating reduces friction during continuous high-frequency oscillation, preventing drag, thermal buildup, and premature blade dulling when processing dense or abrasive synthetic materials.
  
  

• Minimal Over-Cut: The ultra-narrow 2.5° cutting angle enables crisp cornering, tight radii, and detailed geometric cuts with minimal over-cut on thick substrates.
  
  

• Pointed Tip Design: Engineered for clean piercing and execution, compatible with felt underlays without tearing the backing.
  
  

Recommended Material Applications

Typically driven in oscillating / vibrating modes for materials up to 30 mm (1.2 in) in thickness:

• Foams: Expanded Polystyrene (EPS), Polyethylene (PE) foam, Polyurethane (PU) foam, and low-to-medium density technical protective foams.
  
  

• Sandwich & Composite Boards: Honeycomb panels, fluted core boards, and foam boards.
  
  

• Gaskets & Packaging Inserts: Cushioning foams, soft insulation, and acoustic panels.
  
  

Tooling & Adapter Compatibility

Mount this 6mm round shank blade onto the Kongsberg tool head., standard adapter sleeves are required depending on your machine configuration:

• C / XP / U Series (Foam Unit): Adapter 34057125
  
  

• X / XN / XL Series (Foam Knife Tool): Adapter 34053231
  
  

• X / XN / XL Series (FoamHead): Adapter 34057125