Customized sizes are available, according to your drawing or sample.
The plastic pelletizer blade is a precision cutting component installed in strand or underwater pelletizing systems to convert extruded plastic strands into uniform pellets. Designed for procurement engineers, plant managers, and maintenance supervisors in plastics recycling and compounding facilities, these blades must deliver consistent cut quality, extended service life, and dimensional accuracy under high-speed, high-wear conditions. YISHI manufactures pelletizer blades from high-alloy tool steels and high-speed steels, vacuum heat-treated to HRC 58–62, with ground cutting edges achieving a surface finish of Ra ≤ 0.4 µm for clean, burr-free cuts.
Available in D2 (Cr12MoV), M2 HSS, SKD11, and 9CrSi to match specific polymer types, filler content, and throughput demands.
Vacuum heat treatment achieves HRC 58–62 for D2 and HRC 62–65 for M2 HSS, ensuring edge retention and resistance to chipping in abrasive environments.
Double-disc grinding and CNC edge grinding maintain flatness within 0.01 mm and edge sharpness for clean pellet separation, reducing fines and tails.
Thickness tolerance ±0.02 mm, length/width tolerance ±0.05 mm, ensuring perfect fit in OEM and custom rotor assemblies without shimming.
Cryogenic treatment available on request to transform retained austenite, increasing wear life by up to 30% in glass-filled or mineral-filled polymer applications.
YISHI manufactures pelletizer blades to tighter tolerances than most OEM replacement suppliers: thickness ±0.02 mm and flatness ≤0.01 mm, verified by 100% CMM and surface plate inspection before shipment. Our in-house vacuum heat treatment eliminates the batch-to-batch hardness variance common with outsourced processing — we guarantee ±1 HRC variation and provide a hardness certificate with every order. We reverse-engineer directly from worn samples or OEM drawings, replicate bolt-hole patterns exactly, and ship standard custom orders within 15–20 working days. Expedited production is available for urgent line shutdowns. With over 15 years supplying pelletizer blades to recycling and compounding facilities across Asia and Europe, we treat pelletizer downtime as unacceptable.
|
product name |
Plastic Pelletizer Blade |
|
size（Support customization） |
80x42x2.5mm |
|
95x55x3.0mm |
|
|
HRC |
55-65 |
|
Material |
HSS/Cr12mov/SK2/K5/9Crsi |
|
Features |
High hardness, wear-resistant and durable |
|
Outer packaging |
cardboard box/wooden box |
YISHI pelletizer blades are manufactured to fit the most widely used pelletizing systems on the market, including those from Erema, NGR, Maag, Gala, and Reduction Engineering Scheer. Supply your rotor drawing, OEM part number, or an existing worn blade, and we will replicate exact dimensions, bolt-hole patterns, and edge geometry to a drop-in fit.
| Dimensions | Length 80–200 mm, Width 40–100 mm, Thickness 2–5 mm (fully customizable to drawing) |
| Materials | D2/Cr12MoV, M2 HSS, SKD11, 9CrSi, K5 |
| Hardness | HRC 55–65 depending on material grade and heat treatment |
| Tolerances | Thickness ±0.02 mm, Length/Width ±0.05 mm, Flatness ≤0.01 mm |
| Surface Finish | Ground finish Ra 0.4–0.8 µm; mirror finish Ra ≤0.2 µm available for sticky polymers |
| Customisation | Per customer drawing or sample; OEM part number matching; bolt hole patterns, coatings, and edge geometries |
YISHI Machinery operates an in-house heat treatment facility with vacuum furnaces and cryogenic capability, enabling precise control over hardness and microstructure. Our grinding department uses CNC surface grinders and double-disc grinders to achieve tight tolerances and consistent edge quality batch-to-batch. We accept OEM drawings and reverse-engineer from samples, with typical lead times of 15–20 working days for custom orders. All blades undergo 100% dimensional inspection and hardness testing before shipment. With over 15 years of experience supplying pelletizer blades to recycling plants across Asia and Europe, we understand the demands of continuous operation and abrasive materials.
For abrasive filled polymers, we recommend D2 (Cr12MoV) or M2 HSS with HRC 60–62. Cryogenic treatment can further enhance wear resistance by refining the carbide structure.
Yes, send us a drawing or a sample blade, and we will replicate the exact dimensions, hole patterns, and edge geometry. We can also suggest improvements based on wear patterns.
Standard custom orders ship within 15–20 working days. Expedited production is available for urgent requirements; contact our team with your deadline.
We use vacuum heat treatment with multi-point hardness testing on each batch, and provide a hardness certificate upon request. Our process controls maintain a hardness variation of ±1 HRC.
Yes, we can regrind and recondition used blades to restore cutting performance, provided the blade has not exceeded its wear limit. This extends service life and reduces replacement costs.
Our standard ground finish is Ra 0.4–0.8 µm. A mirror finish (Ra ≤ 0.2 µm) is available for sticky polymers to reduce material adhesion and improve pellet quality.
