Optimizing Regrind Quality: Low Speed Granulator Blades & Equipment
In modern injection molding and extrusion, beside-the-press recycling has become a standard practice for cutting material costs. The success of this process, however, depends entirely on the performance of low-speed granulator blades and the equipment itself. Unlike high-speed crushers, low-speed granulators—typically operating at 25-30 RPM (or 28-300 RPM for different models)—rely on high torque and precision shearing to produce high-quality regrind. This makes them ideal for on-site, immediate plastic recycling, streamlining the closed-loop process.
Why Low Speed Demands Higher Precision？
High-speed granulation uses centrifugal force to shatter materials, but low-speed granulation requires blades to "slice" through plastics (such as PC, ABS, or glass-filled Nylon) rather than crush them. If blades are dull or made from inferior steel, they will compromise regrind quality and lead to the following issues:
Excessive Dust
Fine particles can clog filters and cause black spots in molded parts, directly affecting the final product quality.
Uneven Grain Size
This leads to inconsistent melting in the screw and barrel during subsequent processing, reducing production efficiency and product uniformity.
Heat Buildup
Excess heat degrades heat-sensitive resins, making the regrind either unusable or of low quality.
Blade Material: The Foundation of High-Quality Regrind
To maintain a sharp edge under continuous torque, the material composition of the blade is critical. Choosing the right material ensures durability, wear resistance, and consistent shearing performance, which are key to producing high-quality regrind:
SKD-11 Steel
As the industry standard for low-speed granulator blades, it offers an excellent balance of hardness (HRC 58-60) and toughness. This makes it ideal for processing standard runners, sprues, and common plastics like PC, ABS, and nylon.
DC53 Steel
Designed for high-load applications, such as processing glass-reinforced plastics. DC53 delivers superior fatigue strength and wear resistance, preventing blade chipping—a common issue when handling abrasive, reinforced materials.
Blade Geometry & Equipment Design: Key to Dust Reduction
The performance of low-speed granulators depends not only on blade quality but also on thoughtful equipment design and blade geometry. Both factors work together to ensure optimal regrind quality:
Blade Geometry
Modern low-speed granulator knives adopt a "staggered" or "scissor-cut" design, which is engineered to reduce the cutting force required for each stroke. A precise gap (often as tight as 0.1mm) between the rotor and stator blades ensures a clean shear, achieving "dust-free" granulation. This allows regrind to be mixed directly with virgin resin without affecting part quality.
Low Speed Design: Operating at 28-300 RPM (with typical models at 25-30 RPM) minimizes heat accumulation, preventing plastic melting and preserving regrind quality.
Silent Operation: Equipped with sound insulation boxes and noise-canceling cotton, it meets industrial noise control standards, creating a more comfortable working environment.
Screen-Free Structure: Produces uniform particles with minimal powder, allowing direct mixing with new materials without additional processing steps.
Equipment Features: As a specialized crushing device designed for the periphery of injection molding machines, low-speed granulators (also known as slow edge plastic pulverizers) offer several key advantages:
Applicable Scenarios
Low-speed granulators are versatile and widely used in various plastic recycling scenarios, including:
Injection Molding Machine Recycling: Ideal for the immediate crushing and recycling of nozzle materials and defective products next to injection molding machines, forming an efficient closed-loop recycling process.
Hard Plastic Treatment: Suitable for processing hard plastics such as PC, nylon, and ABS.
Soft Plastic Processing: Some models can handle soft plastics like LDPE films and PP woven bags, expanding their application range.
Our Strengths: Professional Blade & Equipment Solutions
We are a professional blade manufacturer specializing in the R&D, production, and sales of high-quality blades, with years of industry experience and technical accumulation. Our products are widely used in plastic, rubber, wood, metal recycling, food processing, and other fields. We are committed to providing customers with efficient, durable, and precise blade solutions that perfectly complement low-speed granulator equipment.
Our core advantages lie in our commitment to quality and customer-centric services:
High-Quality Materials
We use premium materials such as high-hardness alloy steel, high-speed steel, tungsten carbide, SKD-11, and DC53. These materials ensure our blades have excellent wear resistance, impact resistance, and a long service life.
Precision Technology
We introduce advanced CNC machining equipment and heat treatment technology to ensure the dimensional accuracy and performance stability of each blade, meeting the high-precision requirements of low-speed granulation.
Customized Services
We provide customized blade services in different specifications, shapes, and materials according to customer needs, adapting to diverse crushing scenarios and equipment models.
Strict Quality Inspection
Each blade undergoes rigorous quality testing to ensure it meets international standards, providing customers with reliable and consistent products.
Efficient After-Sales Service
We offer professional technical support and after-sales service, responding quickly to customer needs and solving problems encountered during use.
Choosing us means choosing high quality and trust. We look forward to cooperating with you to promote the development of the plastic recycling and crushing industry, and help you achieve a clean, efficient, and cost-effective closed-loop recycling process.
We manufacture high-quality Low Speed Granulator Blades (Material: SKD-11, D2, High-Speed Steel) specifically designed for quiet, low-dust recycling of plastic sprues and rejects. Our precision-ground blades feature optimized cutting angles to ensure high torque and clean cuts at low RPMs. Ideal for machine-side granulators in the injection molding and extrusion industries, ensuring uniform regrind quality and minimal maintenance.
English: Low Speed Granulator Blades | Slow-speed Crusher Knives | Beside-the-press Granulator Parts
French (Français): Lames de granulateur basse vitesse | Couteaux pour broyeur lent | Lames de recyclage silencieuses
Portuguese (Português): Lâminas para granulador de baixa velocidade | Facas para triturador lento | Lâminas de reciclagem lateral
Polish (Polski): Noże do granulatorów wolnoobrotowych | Noże do kruszarek wolnobieżnych | Części do młynków stanowiskowych
Turkish (Türkçe): Düşük Devirli Kırıcı Bıçakları | Sessiz Granül Bıçakları | Makine Yanı Kırıcı Yedek Parçaları
Vietnamese (Tiếng Việt): Lưỡi dao máy nghiền chậm | Dao băm nhựa tốc độ thấp | Dao máy nghiền tại chỗ
Thai (ภาษาไทย): ใบมีดเครื่องบดพลาสติกความเร็วต่ำ | ใบมีดเครื่องย่อยเงียบ | อะไหล่เครื่องบดข้างเครื่องฉีด
Filipino: Mga Blade ng Low Speed na Granulator | Mga Kutsilyo para sa Mabagal na Crusher
Arabic (العربية): شفرات مفرمة بلاستيك منخفضة السرعة | سكاكين كسارات هادئة | شفرات إعادة التدوير بجانب الماكينة
Hindi (हिन्दी): लो स्पीड ग्रैनुलेटर ब्लेड | स्लो-स्पीड क्रशर चाकू | मशीन-साइड रिसाइक्लिंग ब्लेड
Indonesian (Bahasa Indonesia): Pisau Granulator Kecepatan Rendah | Pisau Crusher Senyap | Bilah Daur Ulang Samping Mesin
Malay (Bahasa Melayu): Bilah Granulator Kelajuan Rendah | Pisau Pengisar Senyap | Bilah Kitar Semula Sisi Mesin
Dutch (Nederlands): Messen voor langzaamlopende granulatoren | Geluidsarme maalmessen | Recyclingmessen voor spuitgieten
Swedish (Svenska): Knivar för långsamtgående kvarnar | Lågvarviga granulatorknivar | Maskinnära kvarnknivar
Hungarian (Magyar): Lassú fordulatú daráló kések | Alacsony zajszintű aprítókések | Gép melletti daráló pengék
Greek (Ελληνικά): Λεπίδες κοκκοποιητή χαμηλής ταχύτητας | Μαχαίρια αθόρυβου θρυμματιστή | Λεπίδες ανακύκλωσης πλάι στη μηχανή
Danish (Dansk): Knive til lavhastighedsgranulator | Støjsvage neddelerknive | Genbrugsknive til maskinside
Norwegian (Norsk): Kniver for lavhastighetskvern | Støysvage granulatorkniver | Gjenvinningskniver for sprøytestøping
Finnish (Suomi): Hidaskäyntisen murskaimen terät | Piennopeusgranulaattorin terät | Konevierusmurskaimen terät
Czech (Čeština): Nože pro pomaloběžné drtiče | Granulační nože s nízkou hlučností | Nože pro příruční mlýny
Romanian (Română): Cuțite granulator viteză redusă | Cuțite tocător silențios | Lame reciclare lângă mașină
Slovak (Slovenčina): Nože pre pomalobežné drviče | Granulačné nože s nízkou hlučnosťou | Nože pre príručné mlyny
Bulgarian (Български): Ножове за нискооборотни гранулатори | Тихи ножове за дробилки за пластмаса
Croatian (Hrvatski): Noževi za sporohodne granulatore | Tihi noževi za drobilice | Noževi za reciklažu uz stroj
Ukrainian (Українська): Ножі для низькообертових грануляторів | Ножі для безшумних дробарок пластику
Azerbaijani (Azərbaycan dili): Aşağı sürətli qranulyator bıçaqları | Səssiz doğrayıcı bıçaqlar | Maşın yanı kəsici bıçaqlar
Bengali (বাংলা): লো স্পিড গ্র্যানুলেটর ব্লেড | স্লো-स्पीड ক্রাশার ছুরি | রিসাইক্লিং মেশিন ব্লেড
Tamil (தமிழ்): குறைந்த வேக கிரான்யூலேட்டர் பிளேடுகள் | சைலண்ட் கிரஷர் கத்திகள் | மெஷின்-சைடு கத்திகள்
Persian (فارسی): تیغه های گرانول ساز سرعت پایین | چاقوهای خردکن کم صدا | تیغه های بازیافت پای دستگاه
Hebrew (עברית): להבים לגרנולטור איטי | סכינים למגרסה שקטה | להבי מיחזור ליד המכונה
Afrikaans: Laespoed-granuleerder lemme | Stil-vernipperaar messe | Herwinning lemme vir masjiensy
