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    Slitting Round Blade/ Slitting Disc Knife

    Slitting Round Blade/ Slitting Disc Knife
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    SLITTING ROUND BLADE SLITTING DISC KNIFE (3).jpg
    SLITTING ROUND BLADE SLITTING DISC KNIFE (1).jpg
    SLITTING ROUND BLADE SLITTING DISC KNIFE (2).jpg
    SLITTING ROUND BLADE SLITTING DISC KNIFE (3).jpg

    China Suppliers Slitting Round Blade / Slitting Disc Knife for Steel and Metal Processing Factory

    The slitting disc knife is an essential tool for various industries, including large steel factories, steel pipe plants, non-ferrous metal processing facilities, tying material factories, cold rolling plants, packaging material manufacturers, steel processing service centers, and strip mills. As a leading supplier from China, we provide high-quality slitting disc knives designed to meet high-precision requirements. Whether you’re a machine manufacturer or involved in steel processing, our products are crafted to enhance efficiency and precision in your operations. Partner with our trusted factory for superior slitting solutions tailored to your needs
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      Product Details

      Product Introduction

      ⚙ Industry-Leading Precision Standards
      We can now guarantee that the thickness tolerance of ± 0.0005mm. For a certain inner circle, the tolerance can reach H3. All high-precision products are tested in a constant temperature room.

      With the continuous improvement of machining precision of sheet metal, we have developed ultra high precision cutting tools, whose accuracy has so far been matched by precision milling tools. ± 0.001mm thickness tolerance, and Ra 0.1µ surface roughness are our routine standards. Using our know-how and expertise, we also meet our customers' higher tolerances for thickness, parallelism, flatness, outer and inner rings.

      📐
      Thickness Tolerance
      ± 0.0005 mm
      🔵
      Inner Circle Tolerance
      H3 Grade
      ✨
      Surface Roughness
      Ra 0.1 µ
      🌡️
      Quality Testing
      Constant Temp. Room
      Rubber Sleeve Options

      We can also attach a rubber sleeve to the outer diameter according to the customer's request, so that it can be exported smoothly with the knife to prevent scratches. The rubber sleeve is made of natural primary rubber including:

      • Green Amine Rubber
      • Acrylonitrile Butadiene Rubber (IRHD: 73–75)
      • Polyurethane Isolation Ring (IRHD: 80–85)
      Blade Sleeve Specifications

      The blade sleeve material options include S45C, S50C, and 65Mn, of which S45C is the most commonly used. The blade bushing enables a certain width between the dividing round knife, the upper knife and the lower knife, along with horizontal gap adjustment.

      Parameter Specification
      Common Blade Sleeve Thickness 0.9 mm – 100 mm
      Material Processing Forging → Machining → Heat Treatment → Leveling Grinding
      Hardness 47 ± 2 HRC
      Blade Casing Thickness Tolerance Within 0.003 mm/mt
      Lightweight Aluminum Spacer
      🏗 Weight Reduction Option
      In order to reduce weight, we can also produce aluminum spacers using AL7075 alloy material. The thickness tolerance is also controlled within 0.003 mm/mt.
      Frequently Asked Questions
      Q What is the highest thickness tolerance precision you can achieve?
      Our manufacturing process can guarantee a thickness tolerance of ± 0.0005mm. For specific inner circle applications, the tolerance grade can reach H3. All high-precision products undergo final inspection and testing in a dedicated constant temperature room to ensure dimensional stability.
      Q What materials are available for the blade sleeve (bushing)?
      The blade sleeve is available in S45C, S50C, and 65Mn steel grades. S45C is the most commonly used material due to its excellent balance of hardness and machinability. All sleeves undergo a full process of forging, machining, heat treatment, and leveling grinding.
      Q Can a rubber sleeve be added to the outer diameter of the cutting tool?
      Yes. We can attach a rubber sleeve to the outer diameter upon customer request. The sleeve protects the blade during export and prevents surface scratches. Available rubber types include green amine rubber, acrylonitrile butadiene rubber (IRHD: 73–75), and polyurethane isolation rings (IRHD: 80–85).
      Q What is the hardness level of the blade casing after heat treatment?
      After the complete manufacturing process — including forging, machining, heat treatment, and leveling grinding — the blade casing reaches a hardness of 47 ± 2 HRC. This ensures consistent performance and long service life in demanding slitting applications.
      Q Do you offer lightweight spacer options for weight-sensitive applications?
      Yes. For applications where weight reduction is a priority, we manufacture aluminum spacers using high-strength AL7075 alloy. These aluminum spacers maintain the same strict thickness tolerance of within 0.003 mm/mt, matching the precision of our standard steel blade sleeves.
      Q What is the typical thickness range for blade sleeves, and what tolerances are maintained?
      Blade sleeves are available in thicknesses ranging from 0.9mm to 100mm to accommodate various slitting knife configurations. Regardless of thickness, all blade casing tolerances are maintained within 0.003 mm/mt, ensuring reliable and repeatable performance across the full size range.