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Food Processing Blades

Application-matched blades for meat, poultry, seafood, bakery, produce, and ready-to-eat lines—built for clean cuts, stable edge life, and repeatable performance across orders.

OEM food processing knives

Food Processing Blades We Manufacture

YISHI Machinery manufactures industrial food processing blades for high-volume portioning, slicing, dicing, and extrusion cutting lines. These blades are specified by procurement engineers and maintenance supervisors who require documented steel grades, controlled hardness ranges, and repeatable edge geometry. Material options include D2, M2 high-speed steel, 440C stainless, and tungsten carbide, with vacuum heat treatment to HRC 56–62 depending on the alloy. Typical dimensional tolerances are held to ±0.01 mm on critical profiles, with surface finishes of Ra 0.4 µm or finer for food-contact edges. Every blade is produced to customer drawing, OEM part number, or sample, ensuring direct fit on Multivac, GEA, Handtmann, Urschel, and similar lines.

Food-Contact Compliance Documentation

All Yishi food processing blades are manufactured in compliance with EU Regulation 1935/2004 and FDA 21 CFR Part 177 for food-contact materials. Every shipment includes a Statement of Compliance, mill certificate, and lot-level Rockwell hardness test report — documentation your QA team can file against the blade specification on delivery, without a follow-up request. All food-contact surfaces are cleaned using food-safe grinding fluids and a final residue-removal process before packing.

Take a Closer Look

  • Meat and Poultry Portioning
  • Bakery and Confectionery Slicing
  • Produce and Fresh-Cut Processing
  • Cheese and Dairy Block Cutting
  • Seafood Filleting and Steaking
  • Extrusion and Pelletising Lines
  • Meat and Poultry Portioning

    Guillotine and circular blades for frozen meat blocks, fresh poultry breast fillets, and bone-in cuts. D2 at HRC 58–60 is standard for frozen applications; 440C is specified for washdown environments.

  • Bakery and Confectionery Slicing

    Scalloped and serrated band blades and reciprocating knives for bread, cake, and energy bars. M2 HSS at HRC 62–64 maintains edge sharpness through high-speed slicing of abrasive crusts.

  • Produce and Fresh-Cut Processing

    Circular and cross-cut knives for lettuce, cabbage, and root vegetables. 440C stainless at HRC 56–58 resists corrosion from high-moisture product and frequent sanitation cycles.

  • Cheese and Dairy Block Cutting

    Straight guillotine blades and wire-replacement knives for 20 kg cheese blocks and butter portions. Electropolished 440C at Ra ≤ 0.2 µm minimises product adhesion and simplifies CIP.

  • Seafood Filleting and Steaking

    Narrow-profile band blades and circular knives for salmon, tuna, and whitefish. M2 HSS provides the edge stability needed for clean cuts through skin and pin bones without deflection.

  • Extrusion and Pelletising Lines

    Custom profiled multi-edge blades for cutting extruded snacks, pet food, and meat analogues at the die face. Tungsten carbide edges are available for highly abrasive formulations.

Technical Specifications

Dimensions OD 50–600 mm for circular blades; length 100–1200 mm for straight/guillotine blades; thickness 0.5–10 mm; ID and bolt-hole patterns to drawing
Materials D2 (Cr12MoV), M2 HSS, 440C, SKD11, H13, tungsten carbide (K10/K20 grades)
Hardness HRC 56–62 for D2/440C; HRC 62–65 for M2/HSS; HRA 89–92 for tungsten carbide
Tolerances ±0.01 mm on critical profiles; flatness 0.005 mm per 100 mm; concentricity 0.02 mm for circular blades
Surface Finish Ra ≤ 0.4 µm standard; Ra ≤ 0.2 µm with electropolishing available
Customisation Custom to drawing, CAD file, OEM part number, or physical sample; edge angle, bevel type, coating (TiN, CrN), and mounting features fully configurable

Why Choose Yishi

YISHI Machinery operates an in-house heat treatment facility with vacuum furnaces and cryogenic processing capability, giving us full control over the hardness and microstructure of every blade batch. We do not outsource grinding; all finish grinding is done on CNC surface, cylindrical, and tool grinders to maintain the specified tolerances. Material traceability is standard: every shipment includes a mill certificate and a hardness test report. For food processors running continuous lines, we hold safety stock of approved blade designs and offer scheduled blanket-order releases to eliminate downtime. Our engineering team reviews every drawing for manufacturability before quoting, catching potential fitment issues that generic suppliers miss.

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Frequently Asked Questions

  • What steel grade should I choose for a high-acid food like citrus or tomato?

    440C stainless at HRC 56–58 is the standard recommendation for acidic products and frequent washdowns. It provides sufficient corrosion resistance while maintaining edge retention. For extreme acid exposure or chloride-based sanitisers, we can supply blades in a higher-alloy stainless; contact our engineering team with your sanitation chemical list for a specific grade recommendation.

  • Can you match the blade from my existing OEM line?

    Yes. Send us the OEM part number, a dimensioned drawing, or a worn sample. We reverse-engineer the profile, mounting pattern, and edge geometry. The replacement blade will be produced to the same or tighter tolerances, using the appropriate steel grade for your product and throughput.

  • What is the typical lead time for a custom food blade order?

    Standard lead time is 3–5 weeks from drawing approval for first-article orders. Repeat orders with an established specification typically ship in 2–3 weeks. Rush service is available for breakdown replacements; ask your account manager about current expedite options.

  • Do you offer coatings for food blades?

    Yes. Titanium nitride (TiN) and chromium nitride (CrN) PVD coatings are available to increase surface hardness and reduce friction. These are commonly specified for high-speed slicing of abrasive products. Coatings are applied after final grinding to maintain edge sharpness.

  • What hardness do you recommend for frozen meat cutting?

    For frozen meat blocks at -18°C to -25°C, we specify D2 tool steel at HRC 58–60. This range balances edge retention with sufficient toughness to withstand impact with bone fragments and hard-frozen product. M2 HSS at HRC 62–64 is an alternative for higher-volume lines where maximum wear resistance is the priority.

  • How do you ensure the blade is safe for food contact?

    All food blades are supplied with a surface finish of Ra ≤ 0.4 µm to minimise bacterial adhesion. We use food-grade grinding fluids and a final cleaning process that removes all processing residues. Material certifications and a statement of compliance with EU 1935/2004 and FDA 21 CFR for food-contact materials are provided with each shipment.

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