Refurbishing and Manufacturing Circular Knives

Precision Engineered Industrial Circular Knives and Blades for all Industries

Premium Circular Machine Knives for many Industrial Applications

Our circular knives deliver exceptional precision and durability for high-speed industrial cutting operations. Manufactured from premium materials and engineered to exact specifications, these rotary slitter knives provide clean, accurate cuts across a wide range of materials, including plastic films, paper, foil, textiles, and non-ferrous metals.

We have almost two centuries of expertise, insight, and experience in crafting some of the finest steel blades in the world. Today, we combine our long heritage with advanced, industry-leading technologies to deliver excellent quality, matched by superb cost efficiencies and competitive lead times.

Advantages of Fernite's Circular Knives

✓ Superior Material Quality

Crafted from high-carbon steel, tungsten carbide, or specialized tool steel alloys for maximum hardness and edge retention.

Our blades maintain sharpness through extended production runs.

✓ Precision Ground Edges

Each circular slitting blade is precision-ground to exact specifications with consistent edge geometry.

This ensures uniform cutting quality and reduces material waste.

✓ Custom Specifications

Available in custom diameters, thicknesses, and bore sizes to fit your specific slitting machinery.

We provide tailored solutions for unique applications.

✓ Clean Edge Cuts

Engineered blade geometry produces clean, burr-free edges without tearing, fraying, or material deformation.

Ideal for high-quality finishing requirements.

✓ Extended Blade Life

Advanced heat treatment processes and optional coatings significantly extend blade life, reducing downtime and replacement costs in your operation.

✓ High-Speed Performance

Designed for high-speed slitting operations with minimal heat generation and exceptional stability, maintaining cutting accuracy at maximum production speeds.

Our Precision Knives and Blades include:

Technical Specifications of our Circular Knives

Diameters:

50mm – 400mm
(Custom sizes available)

Thickness Range:

0.5mm – 6mm
Precision tolerance: ±0.01mm

Bore sizes:

12mm – 150mm
Standard & custom configurations

Hardness:

58-65 HRC
Depending on material selection

Manufacturing Circualr Knives in the UK

We are proud to offer our circular knives to high-production factories worldwide. It is well known that our name, Fernite, is associated with First-rate quality among many operators.

The company achieves this by:

  •  Using only fully traceable steel from the accredited European mills in the manufacturing processes
  • Our strict development and production techniques use the very latest manufacturing technology
  • Adapted from CNC machining centres and the aerospace industry, our grinding machines at our UK factory deliver precise, accurate cuts every time
  • We maintain our ISO 9001 certification and conduct regular quality checks in the factory.  Committed to excellence in quality management and customer satisfaction, we are steadily expanding our global presence.

Frequently Asked Questions from our Customers

Which plastics are most abrasive for recycling blades?

Materials containing: glass fibres, mineral fillers, contamination, or mixed recyclate can significantly increase blade wear. Blade material selection is especially important in these applications.

How do I know if my recycling blades are overheating?

Common signs include: blue discoloration, excessive dust, poor cut quality, increased amperage, and rapid edge wear. Overheating is often caused by dull blades or incorrect machine setup.

What information is needed to order circular knives?

Customers typically provide: outside diameter, inside diameter, thickness, number of holes or slots, material requirements, and machine details. Technical drawings or samples can also be used.

Do circular knives affect recycling machine efficiency?

Yes. High-quality circular knives improve cutting efficiency, reduce machine load, lower energy consumption, and help maintain stable production throughput.
Contact us today

Contact Nick to find out more.

 Office: +44 (0) 114 244 0527 Ext: 129

Email: nick.wright@fernite.co.uk

Mobile: 07480 254837

                   WhatsApp: 07480 254837

Mon – Thu: 8.30am-5.00pm

Fri: 8.30am – 3.45pm

Sat-Sun: Closed

Ready to upgrade your Circular Slitting Blades Performance?

Contact us today for a quote on premium Slitting Blades. Our technical experts are ready to help you select the optimal blade configuration for your specific application.

Please provide us with either your blade number, your operating machine model, or even a custom sketch when enquiring. Our blades are designed for compatibility with various models.

Submit Your Enquiry