Industrial knives and cost-efficient recycling knives with the best resilience 



Industrial knives are high-performance knives used for various industrial applications. They must comply with the highest and most rigorous standards to ensure quality and meet the most challenging requirements. As a crucial part of waste management, they are often part of recycling, lighting, food, medical, paper, printing, metal cutting and the automotive industry. Blades are easy to handle and, when used correctly, provide less fiction, damage to the material and the best quality cut.

SIJ Ravne Systems use innovative technology in combination with metallurgical and engineering know-how to assure better value for customers. Their mission is to create industrial knives, such as granulator blades, with higher performance that is visible in lower operations costs. Tight integration into the vertical chain from steel-making to the final product, is guaranteeing better control of the process and the highest product quality.

Choosing the right cutting tool can sometimes seem like a daunting task. So you wouldn't feel overwhelmed, the company provides comprehensive solutions - from resharpening and full reconditioning to offering a complete package of worn parts. 

industrial knives

Recycling knives must offer precision, efficiency and easy maintenance  



Recycling knives have never been in higher demand. Due to environmental awareness, reusing and recycling have lately been a tremendous part of our daily lives. The drive toward sustainability caused an exponential growth of recycling facilities - all in need of high-quality, cost-efficient and long-lasting recycling industrial knives.

Created from a superb new generation of steel alloys with different hardening processes allow for lower total costs of ownership (TCO) and better value in the long run. Various hardening processes such as nitrided, through-hardened and case-hardened in combination with heat treatment in vacuum maximise blade performance. The type of steel is vital as it will affect the properties of the knife - its longevity, strength and cutting quality.

Choosing accurate knives will determine the effectiveness and efficiency of a work process. Among Ravne knives, we can find knives for: 


  • shredding
  • granulating
  • scrap metal recycling


Regardless of the recycling knives you choose, they ought to offer the qualities such as precision (even on fast-moving production lines), easy maintenance and first-rate materials. The blade should be easy to maintain in compliance with safety, hygiene, health and other standards of the specific industry. However, the maintenance is greatly affected by the material, which should be resilient, strong and able to withstand corrosion.


recycling knives



The importance of granulator blades and scrap metal shear blade


Scrap metal shear blade is utilised in the recycling process of ferrous and non-ferrous steels and cast iron. Available in a wide range of different steels and hardness provides the best possible dimensional and geometrical tolerances.

That provides optimised performance and precise gapping, along with lower costs and improved durability. The product range of knives for scrap metal recycling also includes alligator, demolition, shim, wear, guide, rotary and scrap chopper shears. They are manufactured for leading scrap machine brands Lindemann, Lefort, Bonfiglioli, Taurus, Vezzani, Mosley, MAC, Cosmo and many others.

While scrap metal knives are used for steel and cast iron, granulator blades are used for recycling reusable raw materials. Among other plastic, copper, PET, rubber and aluminium are being recycled into granulate. The product range includes tailor-made, high-efficient and precise:


  • Rotor and stator knives
  • Pelletizer knives
  • Fly and dead and bed blades


Granulator blades


How to choose the recycling knives and what to look for?


Industrial knives offer many different materials, shapes and designs. Which you will choose will considerably impact the end product. As you know, the type of steel is of the utmost importance. But there are a few other elements to consider when choosing the right blade for the job. 

  • Reach out to the granulator manufacturer for suitable knife recommendations based on the materials being recycled.
  • The frequency of knife sharpening will depend on the steel alloy composition and the abrasiveness of the material.
  • Most of the time, increasing the number of knife blades can significantly increase productivity.
  • High knife angles with sharp edges are best suited for soft materials, and low knife angles are suited for brittle materials.



Most common troubles and industrial knives that will fix them 


Industrial knives are designed to withstand various materials, regardless of their flexibility and hardness. However, sometimes problems do occur. Most often, those include throughput, lifetime or material cracking. If your production is facing similar problems, look at Duralife V+ Knives.

The next generation of recycling knives offers the user up to three times longer life and better productivity (throughput). Not to mention less regrinding, dust and vibration. All of these new features result in lower energy consumption and service cost. Another common problem is blade toughness, the solution for which are Ravmax industrial knives. They were designed to resolve problems with tools for cold cutting where high shock resistance is required.


scrap metal shear blade