Plastic Shredder Blade Guide: Best Materials for Recycling
This guide helps you choose the right shredder blades, granulator blades, granulator knives, plastic crusher blades and recycling machine cutters for your plastic recycling.
1. Key Choices: 3 Main Materials for Plastic Recycling Tools
Simple picks for common plastics (perfect for crusher knife replacement).
Hard Plastics (ABS, PET, PVC)
Material: SKD-11
Best for hard, tough plastics
Long life, stays sharp longer
Stops shredder blades and granulator knives from chipping or breaking
Soft Plastics (PE, PP, Films)
Material: 9CrSi
Great for thin, stretchy films
Low cost, budget-friendly (ideal for basicplastic recycling tools)
Stops material sticking to plastic crusher blades and recycling machine cutters
Fiber-Reinforced / Thick Materials
Material: DC53
The tough, improved SKD-11 (for durable granulator blades)
Best wear resistance for fibers (perfect for heavy-dutyplastic recycling tools)
Handles thick, mixed waste well (reduces crusher knife replacement frequency)
2. Which Blade to Use? (Shredder & Granulator Knives)
Match the blade shape to your material (works for all plastic crusher blades):
Claw Blades → Sheets, pipes, barrels
Flat Blades → Films, bags, clean cuts
Rotary & Fixed Knives → Precise gap control = no burrs (for recycling machine cutters)
3. Quick Decision Guide (All Plastic Recycling Tools)
Just pick one based on your material (easy for crusher knife replacement):
Hard plastic (ABS/PET): SKD-11 (best for granulator knives and plastic crusher blades)
Soft plastic / film: 9CrSi (affordable recycling machine cutters)
Fiber / thick material: DC53 (durable granulator blades)
4. Quick Tips for Plastic Recycling Tools
Budget start: 9CrSi covers most jobs (saves on crusher knife replacement)
High performance: SKD-11 for most recycling (top choice forgranulator knives)
Heavy duty: DC53 for long life & tough jobs (best plastic crusher blades for fibers)
Why Choose Our Shredder Tooling?
As a professional shredder tooling manufacturer, we are your all-in-one partner for recycling parts.
Our blades fit all well-known shredder machine brands.
Every blade goes through vacuum heat treatment, with steady hardness of 55–60 HRC.
We support OEM custom service. We can make special tooth and hook shapes to process hard waste materials.
Our technical team studies your materials and machine details.
We suggest the best blade material to cut your cost per ton.
We provide both standard replacement parts and fully custom designs to keep your shredder running well.
Blade Metal Materials International Grade Corresponding Table
China (GB) | USA(ASTM) | Japan (JIS) | Germany (DIN) | Germany (W-Nr) | France (NF) | Russia (ROCT) | U.K (BS) |
9CrSi | - | - | 90CrSi5 | 1.2108 | - | 9XC | - |
DC53 |
|
|
|
|
|
|
|
Cr12MOV | - | SKD11 | X165CrMov12 | 1.2601 | - | X12M | - |
Cr12Mo1V1 | D2 | - | X155Cr12Mo12 | 1.2379 | X160CrMoV12 | - | BD |
Drawings of the blades for a plastic shredder
FAQ
Q1: What is the best blade material for shredding dirty plastic?
For plastic mixed with sand, dirt and small metal pieces, DC53 or D2 (SKD11) is recommended. D2 has great wear resistance. DC53 is tougher, so its edges will not chip when hitting hard impurities.
Q2: How often should I turn or sharpen shredder blades?
Our square blades have four cutting edges. Rotate the blade to a new edge once your output slows down or more dust appears. Generally, check blades every 80–120 working hours. Harder plastic wears blades faster (glass-filled nylon wears blades quicker than LDPE).
Q3: Why does shredded plastic melt and stick to blades?
This problem usually comes from too much friction or dull blades. Blunt blades tear plastic instead of cutting it, which creates heat. Wrong blade gap is another reason. Proper clearance between rotor and fixed blades makes clean cuts and reduces heat.
Q4: Do your blades fit well-known European and American shredder machines?
Yes. We make precise replacement blades for top brands including Lindner, Vecoplan, Untha, Zerma and Weima. All sizes, bolt holes and sunk holes fully meet OEM standards for perfect installation.
Q5: What is the difference between vacuum heat treatment and ordinary hardening?
We use vacuum heat treatment. It makes hardness even from blade surface to inner core. Ordinary hardening leaves the blade core soft, causing fast wear and breakage. Our heat treatment keeps stable hardness at 58-62 HRC, and extends blade service life.
Global Supply: High-Performance Plastic Shredder Blades & Granulator Knives
We manufacture premium Plastic Shredder Blades (Material: D2, SKD11, DC53, 9CrSi) optimized for industrial plastic recycling, PET bottle crushing, and heavy-duty granulating:
English: Plastic Shredder Blades | Granulator Knives
French (Français): Lames de broyeur de plastique | Couteaux de granulateur
Portuguese (Português): Lâminas de triturador de plástico | Facas para granuladores
Polish (Polski): Noże do rozdrabniaczy tworzyw sztucznych | Noże do granulatorów
Turkish (Türkçe): Plastik Kırıcı Bıçakları | Granül Bıçakları Fabrikası
Vietnamese (Tiếng Việt): Lưỡi dao máy nghiền nhựa | Dao băm nhựa tái chế
Thai (ภาษาไทย): ใบมีดเครื่องย่อยพลาสติก | ใบมีดเครื่องบดเม็ดพลาสติก
Filipino: Mga Blade ng Plastic Shredder | Mga Kutsilyo para sa Granulator
Arabic (العربية): شفرات كسارات البلاستيك | سكاكين تقطيع البلاستيك وإعادة التدوير
Hindi (हिन्दी): प्लास्टिक श्रेडर ब्लेड | ग्रेनुलेटर चाकू
Indonesian (Bahasa Indonesia): Pisau Penghancur Plastik | Bilah Mesin Granulator
Malay (Bahasa Melayu): Bilah Pengisar Plastik | Pisau Mesin Granulator
Dutch (Nederlands): Kunststof versnippermessen | Messen voor granulatoren
Swedish (Svenska): Plastkvarnsknivar | Knivar för granulatorer
Hungarian (Magyar): Műanyag daráló pengék | Granuláló kések
Greek (Ελληνικά): Λεπίδες καταστροφέα πλαστικών | Μαχαίρια κοκκοποιητή