INDUSTRY COMPONENT

Slitting Knives/Razor Blades

Precision slitting knives and razor blades used in industrial slitting machines for clean material separation.

Component Specifications

Definition
Slitting knives and razor blades are precision cutting components installed on rotating shafts within slitting heads. They perform controlled cutting operations on various materials (films, foils, papers, textiles) by creating clean, burr-free edges through shearing action between upper and lower blades or against hardened counter-rollers. These components maintain dimensional accuracy and edge quality throughout high-speed production runs.
Working Principle
Slitting knives operate on shear cutting principles where material passes between precisely aligned rotating blades. Razor blades typically use score cutting against hardened anvil rollers. Both methods create controlled material separation through localized stress concentration exceeding material tensile strength, minimizing deformation and ensuring clean edges.
Materials
High-carbon tool steel (D2, M2), tungsten carbide, ceramic-coated steel, or diamond-coated blades for abrasive materials. Hardness typically 58-65 HRC with precise edge geometry.
Technical Parameters
  • Diameter 50-300 mm
  • Hardness 58-65 HRC
  • Bore Size 20-80 mm
  • Thickness 0.5-3.0 mm
  • Edge Angle 30-45 degrees
  • Surface Finish Ra 0.2-0.8 μm
Standards
ISO 9001, DIN 8588, ISO 15641

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Slitting Knives/Razor Blades.

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Blade breakage causing machine damage
  • Poor cut quality from dull blades
  • Material contamination from blade particles
  • Operator injury during maintenance
FMEA Triads
Trigger: Improper blade alignment
Failure: Uneven cutting, material tearing
Mitigation: Regular alignment checks using dial indicators, proper installation procedures
Trigger: Material buildup on blades
Failure: Increased cutting resistance, poor edge quality
Mitigation: Implement blade cleaning schedule, use anti-stick coatings
Trigger: Fatigue from cyclic loading
Failure: Blade cracking or catastrophic failure
Mitigation: Regular inspection for micro-cracks, proper storage to prevent corrosion

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.005 mm diameter, ±0.001 mm thickness
Test Method
Coordinate measuring machine (CMM) verification, Rockwell hardness testing, surface roughness measurement

Buyer Feedback

★★★★☆ 4.6 / 5.0 (19 reviews)

"Found 33+ suppliers for Slitting Knives/Razor Blades on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Slitting Knives/Razor Blades is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Slitting Knives/Razor Blades so far."

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Frequently Asked Questions

How often should slitting knives be replaced?

Replacement frequency depends on material abrasiveness and production volume. Typically every 200-1000 operating hours. Regular inspection for edge wear, chipping, or dullness is recommended.

Can slitting knives be resharpened?

Yes, high-quality steel blades can be resharpened 3-5 times using precision grinding equipment while maintaining original geometry. Carbide blades have limited resharpening capability.

What causes premature blade wear?

Common causes include improper alignment, excessive blade pressure, abrasive materials, incorrect blade-material pairing, and inadequate lubrication/cooling.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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