CLAAS | Straw Chopper Knife – Smooth | Schumacher Radura PrimeLine | A03L5
Genuine Schumacher A03L5 | Smooth-edge tungsten carbide coated straw chopper knife designed for CLAAS combine straw chopper systems using Schumacher Radura PrimeLine components. Suitable as a replacement for OEM reference numbers 7557860 and 7368720.
This straw chopper knife is manufactured by Schumacher, the OEM supplier of Radura cutting systems used in many CLAAS combines. The smooth cutting edge provides controlled, uniform straw processing while maintaining excellent durability in high-hour harvesting conditions.
The knife features a laser-clad tungsten carbide cutting edge with extremely hard, embedded carbide particles. This advanced wear coating delivers exceptionally high wear resistance and a significantly longer service life than standard straw chopper blades, even in abrasive straw and residue environments.
As the knife wears, the carrier material wears faster than the carbide coating, creating a continuous self-sharpening effect. This keeps the cutting edge consistently sharp and ensures reliable chopping performance throughout the season.
A sharp, stable cutting edge helps maintain consistent engine load and power demand, reducing unnecessary energy loss and minimizing fuel consumption. Cutting precision remains constant, supporting smooth and efficient straw chopping in CLAAS harvesting systems.
Designed for clean, efficient straw shredding and uniform residue distribution, this knife improves residue management, accelerates straw breakdown, and supports better soil incorporation after harvest.
See the specifications table below for dimensions and mounting details
Product Specifications
| Specification | Details |
|---|---|
| Brand (OEM Fitment) | CLAAS |
| OEM Part | 7557860 - 7368720 |
| Our Part Number | A03L5 |
| Product Line | Radura PrimeLine |
| Blade Type | Smooth Edge |
| Total Length (L) | 173 mm (6.811") |
| Width (W) | 50 mm (1.969") |
| Thickness (T) | 4 mm (0.157") |
| Bore Diameter (B) | 20.1 mm (0.791") |
| Bore Spacing (LB) | 150 mm (5.906") |
| Wading Length (BL) | 90 mm (3.543") |
| Radura BasicLine Equivalent | 42255 |
Special Features
| Feature | Details |
|---|---|
| Tungsten Carbide Coating | Extremely high wear resistance Significantly longer service life than standard blades |
| Laser Cladding Technology | Strong carbide-to-steel bond Consistent wear protection under abrasive conditions |
| Self-Sharpening Edge | Base material wears faster than coating Maintains a sharp cutting edge over time |
| Smooth Blade Design | Controlled, uniform straw processing Even residue distribution across the field |
| Reduced Power Demand | Stable engine load during operation Helps reduce energy use and fuel consumption |
| Radura PrimeLine System | Designed for PrimeLine applications BasicLine equivalent available under part number 42255 |
This product is on order
If you have any questions at all please fill out the Pre-Order Form below or reach out to us at 204-878-9296