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Rotary Slitter Knives

Our rotary slitter knives are engineered specifically for industrial slitting lines where precision, durability and consistent performance matter. Whether you are cutting metal, film, foil or composite material, our knives deliver clean slit edges, lower re‑grind cycles and improved uptime.
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Customized sizes are available, according to your drawing or sample.

  • Fully Custom
  • Expedited Production Processing

Why Choose These Rotary Slitter Knives

  • Broad Application Coverage: These rotary slitter knives are suitable for slitting sheet metals, films, foils, non-wovens, and more. They can also be used to tear plastic, PE boards, wood, snakeskin bags, and other products. Customized tooth-forms, bevels, or smooth edges are available, making them versatile for various materials.
  • Cost-Effective Total Value: Longer run-times, fewer maintenance stops, and reduced downtime translate into lower operating costs per slit. The high efficiency of these blades saves time and labor, boosting productivity.
Versatile rotary slitting blades

Features

Industry Applications

  • Metal and foil processing
    Applications
    Metal processing

    Cold rolled steel, aluminium foil, clad materials

  • Film and foil converting
    Applications
    Film and foil conversion

    Packaging film, aluminium foil, composite laminates

  • Nonwoven and textile slitting
    Applications
    Non‑woven & textiles

    Slit rolls for hygiene, filtration or automotive use

  • Clean-edge paper and board slitting
    Applications
    Paper & board converting

    Where clean slit edges and minimal burrs are essential

  • 你说： 我会给一段图片的总结段落,帮我尽可能缩到6个单词之内的器图片的alt描述 ChatGPT 说： 没问题，发给我总结段落吧！ 你说： 不能出现原文本中的产品名可以用同义词等替代 ChatGPT 说： 了解了，收到总结段落后我会帮你提炼不超过6个字的alt描述，并且避免出现原文产品名，尽量用同义词或泛称替代。发给我吧！ 你说： Large blade double-layer The large slope of this knife design reduces cutting resistance, ensuring smoother cuts. The result is a flat incision with no burrs, making it ideal for precise, high‑speed slitting. ChatGPT 说： 双层大刃刀锋 你说： 英文用图加名称 ChatGPT 说： Sure! Here’s a concise English alt description with a focus on the image and concept, under 6 words, no product name: "Large double-layer blade slicing" If you want it more visual or slightly varied, just let me know! 你说： Small double blade This knife is widely used for cutting harder or thicker materials, such as adhesives, paper, leather, and more. Its design ensures clean cuts with a sharp edge, making it perfect for tougher applications. ChatGPT 说： Small double blade cutting 你说： Paper & Tissue converting lines ChatGPT 说： Paper and tissue processing line 你说： Film & Foil slitting ChatGPT 说： Film and foil cutting line 你说： Non‑wovens & Textiles ChatGPT 说： Fabric and nonwoven materials 你说： Plastics & Rubber sheet slitting ChatGPT 说： Plastic and rubber sheet cutting 你说： Metal or composite foil slitting ChatGPT 说： Metal and composite foil cutting 你说： How to Select the Right Bottom Slitter Blade When choosing a bottom slitter knife, consider these key factors: Material to be cut: different web materials (paper, film, foil) require different hardness and edge design. Slitting method: shear, crush, razor – the bottom knife must match the method. Top knife compatibility: the bottom knife must match the top knife in radius, bevel and material pairing. Hardness and geometry: higher hardness may extend life, but must be balanced with machine tolerance. Run‑out and concentricity: excessive radial or axial run‑out leads to poor cut quality and faster wear. Downtime cost: choose a knife that gives longer life or easier re‑grinding to reduce total cost of ownership. ChatGPT 说： Choosing right bottom slitter blade 你说： Why Yishi Machinery for Your Bottom Slitter Blade? Full‑service factory: From raw material selection to heat‑treating, grinding, inspection and packaging, we control the entire process. Custom sizes & OEM compatibility: Whether you need a direct replacement for a legacy machine or a custom blade for a new line, we can deliver. Global logistics & support: We ship worldwide and provide after‑sales support, re‑grinding service and spare supply. Quality assurance: All knives undergo material testing, edge finish inspection and run‑out measurement to satisfy demanding converting lines. Cost‑effective solutions: Longer service life, fewer change‑overs, less downtime – we help lower your total cost of ownership. ChatGPT 说： Trusted custom blades, global support 你说： Installation & Maintenance Tips Ensure correct alignment of top and bottom knives; misalignment causes premature wear or edge chipping. Periodically check knife run‑out and surface finish; replace or re‑grind when out of tolerance. Keep blade groove channels clean from dust and debris to maintain consistent nip and avoid web bounce. Use the bottom knife as part of a matched set with the top knife to ensure optimal slit quality and minimal dust. Track service life and set proactive re‑grind or replacement intervals to avoid unplanned downtime. ChatGPT 说： Blade alignment and maintenance tips 你说： Key Benefits Enhanced durability and longer service life thanks to premium tool‑steel or carbide‑tipped construction paired with optimized edge geometry. Improved cut quality with minimal burr and deformation, enabling tight tolerances and clean finishes. Reduced maintenance and changeover time — standard sizes ready for stock or custom blanks produced to specification. Flexible customization: we support bespoke lengths, thicknesses, edge styles and coatings to suit specific rubber materials and machines. Strong technical support and supply chain reliability, ensuring you get the blade when and how you need it. ChatGPT 说： Durable, precise, customizable blades 你说： Applications This blade is ideal for rubber slitting, trimming, guillotine cutting, rotary cutting, extrusion cutoff and rubber mat conversion lines. Whether you handle automotive hose, conveyor belting, rubber flooring, or industrial gaskets, the right blade helps you keep your edge. ChatGPT 说： Rubber cutting and trimming applications 你说： How to Select the Right Blade When selecting the correct rubber cutting blade, consider the following: Material hardness & composition: softer extruded rubber demands a different edge geometry than highly filled or reinforced compounds. Machine type & cut style: slitting, guillotine, rotary, and extrusion cutoff each impose different force, speed and clearance requirements. Dimensions & tolerances: width, thickness, edge profile and finish all affect blade life and cut quality. Coating & environment: in high‑abrasion or high‑temperature settings, coatings or carbide may add value. Use these inputs to guide your blade specification and consult with our engineering team for best results. ChatGPT 说： Selecting right rubber cutting blade 你说： Why Choose Us At YISHI we specialise in industrial‑grade blades designed for conversion and processing of rubber materials. With years of expertise in manufacturing blades for the converting industry, we deliver durability, consistency and customisation. Our global supply chain ensures reliable delivery while our engineering support helps you match the correct blade to your machine and material. ChatGPT 说： Expert rubber blade manufacturing, reliable 你说： Key Applications & Benefits In paper converting and roll slitting applications, “paper slitter blades” refer to the top and bottom knives that split large parent rolls into narrower widths. These blades must maintain sharp edges under high speed, high load conditions to ensure consistent width and clean cut edges. ChatGPT 说： Sharp blades for paper roll slitting 你说： Types of Slitter Blades & How to Choose There are two common profiles​: ​Flat blades and dished (concave) blades. According to industry best practice, flat blades suit high‑speed, heavy‑duty paper slitting; dished blades excel in lighter web or film applications. Material selection also matters: ​From high‑carbon tool steel to carbide‑tip options depending on abrasion, web speed and service life requirements. ChatGPT 说： Flat and concave blade types 你说： Our Custom Blade Service & Capabilities At YISHI we offer full customisation of paper slitter blades: Custom diameters, widths, bore sizes and profiles Choice of premium materials and coatings for extended life Precision grinding, edge geometry optimisation and balancing Technical support for installation, alignment and maintenance ChatGPT 说： Customizable paper slitter blades service 你说： Cost‑Efficiency & Performance You Can Depend On By investing in high‑quality slitter blades you: Lower cost per cut by extending blade life and reducing unplanned downtime Achieve higher production throughput with fewer edge defects Improve overall product quality and reduce customer complaints ChatGPT 说： Efficient, durable, high-performance blades 你说： Maintenance & Best Practice Tips To maintain peak performance of your slitter blades: Regularly inspect edge condition and alignment Replace blades before performance degrades substantially (avoid "just in time" changes) Clean web and remove debris to prevent unnecessary wear or damage These practices are outlined by industry experts for longer blade life and safer operation. ChatGPT 说： Blade care for lasting performance 你说： Rotary Slitter Knives ChatGPT 说： Rotary slitter cutting blades 你说： the more different ChatGPT 说： Got it! Here are more varied alt texts for Rotary Slitter Knives: Circular cutting blade Rotary slicing tool Spinning slitting knife Round rotary cutter Rotating blade for slitting Cylindrical cutting edge Want more options or a specific style? 你说： Why Choose These Rotary Slitter Knives Broad Application Coverage: These rotary slitter knives are suitable for slitting sheet metals, films, foils, non-wovens, and more. They can also be used to tear plastic, PE boards, wood, snakeskin bags, and other products. Customized tooth-forms, bevels, or smooth edges are available, making them versatile for various materials. Cost-Effective Total Value: Longer run-times, fewer maintenance stops, and reduced downtime translate into lower operating costs per slit. The high efficiency of these blades saves time and labor, boosting productivity. ChatGPT 说： Versatile rotary slitting blades 你说： Metal processing Cold rolled steel, aluminium foil, clad materials ChatGPT 说： Metal and foil processing 你说： Film and foil conversion Packaging film, aluminium foil, composite laminates ChatGPT 说： Film and foil converting 你说： Non‑woven & textiles Slit rolls for hygiene, filtration or automotive use ChatGPT 说： Nonwoven and textile slitting 你说： Paper & board converting Where clean slit edges and minimal burrs are essential ChatGPT 说： Clean-edge paper and board slitting 你说： Recycling and rewinding lines Where downtime reduction is critical ChatGPT 说： Efficient recycling and rewind lines
    Applications
    Recycling and rewinding lines

    Where downtime reduction is critical

Technical Parameters

Product name
Rotary Slitter Knives
Scope of application
steel
Material
9Crsi/SKD-11/D2/HSS/M2/440B/420J
Hardness (HRC）
56/60/61/60/62/58/58
Precision （Fatness)
±0.01
Package
Plastic Bag+Foam+Carton Box

Advantages for Your Business

  • Higher productivity

    Fewer unscheduled stops for re‑grinding or blade changes means your slitting line runs longer — improving throughput.

  • Better product quality

    Clean slit edges reduce downstream defects, edge delamination or burr generation.

  • Lower total cost of ownership

    Although an investment, the reduction in scrap, maintenance labour and downtime leads to lower cost per unit over time.

  • Flexible supply

    Custom sizes/grades means you’re not locked into standard blade options; you get exactly what your process needs.

  • Flexible supply

    Custom sizes/grades means you’re not locked into standard blade options; you get exactly what your process needs.

Ordering & Support

Please contact us with your slitter model, material type, required dimensions (diameter, bore, thickness), tolerance and quantity. We will provide a quotation, lead‑time and drawing proof for your approval.
After shipment, we also offer re‑grinding/refurbishment services, and technical assistance for installation, edge‑setting and performance optimization.

Ordering and support services

Why Our Company

With decades of experience in industrial slitting solutions, our team combines manufacturing capability, quality engineering and customer‑centric service. We follow strict quality procedure to ensure each knife meets your requirements. We are committed to helping you optimize your production line — not just selling a blade.

Experienced industrial slitting experts

Frequently Asked Questions

Do you have any questions about our products and how to use them? We have compiled the most frequently asked questions and answered them. If your question is not listed here, please contact us.

More About Us
  • What materials can these knives cut?

    Our knives are suitable for slitting metals, films, foils, non-wovens, plastics, PE boards, wood, and more.

  • What is the tolerance for these knives?

    We offer thickness tolerances as tight as ±0.02 mm, or can customize based on your requirements.

  • Can I customize the knives?

    Yes, we provide customization for material, tooth-form, bevel angle, and surface finish.

  • How long do the knives last?

    Made from high-quality steels and heat-treated for durability, our knives offer long-lasting performance and reduced downtime.