YiShi Machinery manufactures industrial machine knives for production, converting, and recycling lines where cutting edge integrity directly affects throughput and part quality. Our blades are specified by procurement engineers and maintenance teams who require exact material grades, controlled hardness ranges, and dimensional tolerances that match OEM fitment. We supply knives in tool steels (D2, M2, H13, SKD11, Cr12MoV), high-speed steels, and tungsten carbide, with vacuum heat treatment achieving HRC 58–65 depending on the grade. Every knife is produced to customer drawings, sample dimensions, or OEM part numbers, with typical OD/ID tolerances held to ±0.01 mm and surface finishes down to Ra 0.2 µm on cutting edges. This page outlines the knife types, material options, and application-specific configurations we support across packaging, plastics recycling, roll cutting, printing, non-wovens, and food processing — including our bread cutter blade for commercial bakery slicing lines — including our bread cutter blade for commercial bakery slicing lines.
Quick-change pneumatic knife holder for paper, film, cloth, foam, and non-woven cutting.
Cutter blade for pouch packing machines, made for clean sealing cuts and efficient bag production.
Wear-resistant granulator blades for shredding and granulating plastic waste with stable output.
Food-grade blades for slicing vegetables and frozen meat with clean, consistent cutting results.
Pelletizer knife for plastic recycling lines, built for sharp cutting and durable service life.
Rotary pelletizer knife for plastic pelletizing lines, helping produce clean and uniform pellets.
Rotary cutter for pelletizing machines, designed for stable cutting and consistent pellet size.
Precision cutter blade for polyester staple fiber lines, made for clean and stable fiber cutting.
YISHI chemical fiber cutting blades are precision-ground from D2 and SKD11 steel, vacuum heat treated to HRC 58–62 for clean, stable cutting in synthetic fiber processing lines.
Blades for pouch packing, overwrapping, and cartoning machines. We manufacture to OEM jaw profiles for triangle, flat-bottom, and stick-pack formats. Material typically D2 at HRC 58–60 for balanced wear resistance and toughness. Serrated edge geometries available for tear-notch applications.
Granulator rotor and bed knives for size reduction of PP, PE, PET, ABS, and engineering plastics. Pelletizer rotary cutters and bed knives for strand and underwater pelletisers. Standard material is D2 (HRC 58–60) for general-purpose use, M2 (HRC 62–64) for filled or reinforced plastics, and tungsten carbide for highly abrasive compounds. Knife mounting hole patterns matched to your rotor specifications.
Circular slitter blades and shear knives for slitting and cross-cutting paper, film, aluminium foil, and coated textiles. Top and bottom knife pairs ground as matched sets to ensure clean shear cuts. Bore tolerances H6, OD runout within 0.005 mm TIR. Surface finish Ra 0.2 µm on bevel faces reduces material adhesion.
Doctor blades for flexo and gravure presses with controlled edge radius for consistent ink metering. Non-woven slitting blades and polyester staple fibre cutter blades in M2 or tungsten carbide for extended life in abrasive fibre processing. Edge retention is critical here; we apply PVD coatings where specified.
Vegetable dicing blades, frozen meat slicer knives, and bowl cutter blades. Manufactured from food-grade tool steels and stainless grades (440C, D2). Edge geometry optimised for clean cuts with minimal product adhesion. CrN coatings available for reduced friction and improved corrosion resistance.
Every knife we ship starts with your specification. Provide a dimensioned drawing with material grade, hardness, and tolerance callouts, and we manufacture to print. If you do not have a drawing, send the OEM part number, machine make and model, or a worn sample. Our engineering team will reverse-engineer the geometry, measure hardness, and propose an equivalent or upgraded material.
Metal, plastic, film, paper, board, fiber, rubber, food products, and other materials all require different blade materials, edge geometries, and wear strategies.
We manufacture OEM replacement and custom machine knives based on your machine type, installation structure, and dimensional requirements.
Edge angle, thickness, diameter, length, hole pattern, bevel design, and other geometry details are matched to the cutting task and machine motion.
Production speed, cutting direction, line pressure, temperature, contamination, and other working conditions all affect blade material selection and edge preparation.
We also consider sharpening cycles, replacement intervals, spare blade planning, and total operating cost when recommending a knife solution.
We stock and machine a wide range of tool steels and carbides. D2 (Cr12MoV equivalent) offers high wear resistance at HRC 58–60. M2 high-speed steel provides hot hardness and edge retention at HRC 62–65. H13 is used where toughness and thermal fatigue resistance are priorities. Tungsten carbide grades (HRA 88–92) deliver maximum life in abrasive applications. Material selection is guided by your cutting media, cycle rate, and desired service interval.
All blades are produced on CNC grinding centres with in-process gauging. Wire EDM is used for complex profiles and internal features. Vacuum heat treatment with multi-zone temperature control ensures uniform hardness across the blade cross-section. Deep cryogenic treatment is available for D2 and M2 grades to transform retained austenite and improve dimensional stability.
Cutting edges are ground and honed to your specified geometry. Single bevel, double bevel, hollow grind, and serrated profiles are all within our capability. Post-grind honing removes micro-burrs and achieves surface finishes of Ra 0.2–0.4 µm. Edge radius can be controlled to micron-level tolerances for applications like doctor blades and fibre cutting.
All industrial machine knives are produced in-house on our CNC grinding centres and wire EDM machines. No sub-contracting. You work directly with the production facility, which means consistent lead times and no intermediary markup between your specification and your shipment.
OD/ID tolerances are held to ±0.01 mm as standard. Cutting edge surface finish is Ra 0.2 µm. Hardness is verified by Rockwell testing per production batch — test records are available on request. We do not estimate tolerances; we measure and document them.
We source D2, M2, H13, SKD11, and tungsten carbide from traceable suppliers. Material mill certificates are available with each shipment. If your specified grade creates lead time or cost constraints, we will propose a verified alternative and explain the exact trade-offs in hardness, wear resistance, and service interval.
Supply an OEM part number, machine brand and model, or a worn sample. Our engineering team reverse-engineers the full geometry, measures the original hardness specification, and produces a replacement that fits the existing installation. No drawing is required to begin the process.
Selecting the right industrial machine knife involves balancing material, hardness, edge geometry, and coating against your specific cutting application. Use this guide as a starting point:
