The counter knife or scraper comb in the shredder, together with the rotor knives, represent the heart of the machine. Both ensure a clean cut when shredding and crushing recycling material.
Only when the cutting gap and the angle between the cutting crowns are set correctly will you get optimum performance from the machine. Like the cutting crowns, the geometry, hardness and material of the counter blades and scraper combs can be optimized by the application experts at CUTMETALL.
CUTMETALL provides a solution for every application.
Case-hardened versions such as those made of 1.7131 are a good means of processing high-impurity material and preventing unintentional breakouts. Due to the principle of cut metal, hard on the outside and soft on the inside, the counter blades can also absorb stronger impacts well and do not break out immediately at the tooth front.
Through-hardened wear-resistant versions made of 1.2379 are well suited for high throughput and low tool life. In order to avoid knife breakage, high-quality and qualified heat treatment processes are necessary here, as they are applied at CUTMETALL. Please contact us. We will be pleased to advise you which variant is suitable for you.
Do not hesitate to send us your worn counter knives or scraper combs, we will analyze the wear pattern and optimize your knives together with you. This often leads not only to longer service lives, but also to cost savings in high ranges.