Counter knives | scrapers

Counter Knives | Scrapers for reliable shredding performance

Counter Knives and Scrapers are essential components in industrial Shredder systems that ensure precise, consistent material size reduction. These parts act as the counterpart to the cutting crown and must be set at the correct angle to the Rotor so that the cutting edges interact optimally. Metav Werkzeuge supplies tailor-made Counter Knives and Scrapers compatible with a wide range of machine brands, helping improve uptime and cutting quality.

How Counter Knives and Scrapers improve processing and uptime

In shredding applications, the interaction between the cutting crown and the Counter Knife determines cut quality and throughput. Properly matched and aligned Scrapers prevent material from jamming and reduce the load peaks on the drive train. Their geometry and material treatment are optimised to withstand abrasive and contaminated feedstocks, which is particularly important for recycling processes handling mixed fractions.
When case-hardening or tailored heat treatments are applied, the outer layer becomes wear-resistant while a softer core absorbs impact energy, reducing the risk of tooth breakouts. This combination increases service life while maintaining toughness.
Design considerations such as tooth profile, pitch and attachment interface must be matched to the host machine to deliver predictable performance and simplify maintenance.

Practical benefits and why choosing the right part matters

Selecting the correct Counter Knife or Scraper directly reduces downtime and operational costs by extending intervals between replacements and avoiding unexpected failures. Operators benefit from more consistent particle size distribution, fewer fines, and reduced downstream sorting issues. For businesses committed to efficient recycling, these parts are vital to achieve reliable throughput and lower total cost of ownership.
Choosing bespoke or machine-specific variants ensures fitment accuracy and reduces installation time. If you process contaminant-rich materials, hardened outer surfaces with a ductile core are advisable to resist chipping.

Main features that define effective counter knives and scrapers

• Compatibility: Custom-fit for major machine makes and models to ensure correct alignment and secure mounting
• Material Treatment: Case-hardened or optimised alloys for high wear resistance and impact tolerance
• Geometry: Engineered tooth profile and angle for precise cutting interaction with the cutting crown
• Service Life: Extended wear life through material selection and heat treatment, lowering replacement frequency
• Impact Resistance: Soft core designs absorb shocks from tramp metal or contaminants, reducing breakouts

Trusted compatibility and supplier excellence

Metav Werkzeuge provides precision-fit Counter Knives and Scrapers compatible with numerous well-known machine manufacturers such as Lindner Recyclingtech, Eldan, IVSE, Gross, Untha, Vecoplan, Weima, Zeno, Bano and Artech. Their expertise in tailoring parts for specific product lines ensures installation-ready components and professional support. If you are unsure which variant suits your shredder, Metav Werkzeuge’s consultation helps you select the solution that balances wear behaviour, cutting performance and maintenance intervals.

Clear recommendation and how we assist

For greater operational reliability, choose correctly matched Counter Knives and Scrapers that have been optimised for your machine and feedstock. Our team can advise on material treatments, tooth geometry and replacement strategies to maximise uptime.

Counter Knives | Scrapers play a decisive role in shredding performance and recycling efficiency.
In short: choose tailored, well-treated counter knives and scrapers to improve cut quality, extend service life and reduce unplanned downtime.