Zerma has been a global leader in size reduction technology for more than seventy years, supplying shredders, grinders and granulators trusted across plastics, wood and metal recycling industries.

KAMADUR strengthens this reputation by offering high quality aftermarket blades designed for reliable cutting performance and extended service life.

Our Zerma compatible knives are stocked in Bleiswijk in the Netherlands, ensuring fast availability for all major Zerma machine series.

KAMADUR Zerma blades are produced from premium DIN 1.2379 D2 tool steel and machined on advanced CNC systems to achieve precise cutting geometry.

Our heat treatment process includes triple tempering to deliver exceptional wear resistance, toughness and stability during continuous shredding and granulating operations.

For highly abrasive materials, we offer tungsten carbide inlay blades that provide up to ten times longer lifetime between sharpenings.

We supply blades and wear parts for all popular Zerma models including:

• GSC
• GSH
• GSP
• ZSS
• ZXS
• ZRS
• ZPS
• ZIS
• ZHS
• ZBS

• Granulator knives for clean and consistent granulate
• Shredder knives for single shaft and twin shaft shredders
• Knife holders for secure and stable knife positioning
• Wear parts including spacers, counter knives, seals and other components
• Granulator screens for predictable particle size and throughput
• Custom knives produced according to drawings or samples
• Sharpening services for Zerma straight knives
• Cleaning services for Zerma cutting components