Genuine Schumacher A05WN | Serrated-edge tungsten carbide coated straw chopper knife designed for New Holland combine straw chopper systems using Schumacher Radura PrimeLine components. Suitable as a replacement for OEM reference numbers Z105500 and 87318316.

Manufactured by Schumacher, the OEM supplier of Radura cutting systems used in many New Holland combines, this serrated straw chopper knife delivers aggressive cutting action for demanding residue conditions while maintaining excellent durability in high-hour harvesting environments.

The cutting edge features a laser-clad tungsten carbide coating with extremely hard, embedded carbide particles. This advanced wear technology provides exceptionally high wear resistance and a significantly longer service life than standard serrated chopper blades, even in abrasive straw and residue conditions.

As the knife wears, the carrier material wears faster than the carbide coating, creating a continuous self-sharpening effect. This ensures the serrations remain effective and cutting performance stays consistent throughout the service life.

A sharp, aggressive cutting edge helps maintain stable engine load and power demand, reducing unnecessary energy loss and minimizing fuel consumption while improving chopping efficiency in heavy or damp straw conditions.

Designed for clean, efficient straw shredding and uniform residue distribution, this knife supports improved residue management, faster straw breakdown, and better soil incorporation after harvest.

See the specifications table below for dimensions and mounting details

Product Specifications

Compatible Machines

Special Features