Left Curved Rotary Tiller Blade for BCS / Bertolini / Grillo - Part Number: 55524

The Left Curved Rotary Tiller Blade (part number 55524, flat steel section 30 × 6 mm, mounting holes Ø 10.5 mm with 66 mm center-to-center distance, working dimensions X = 72 mm, Y = 190 mm, Z = 20 mm, adaptable OEM reference 58042307) is a drop-forged, heat-treated wear part engineered for high abrasion resistance and bending toughness. Formed with a left-hand helical curvature to work in complete dynamic symmetry with its opposite right-hand blade, it ensures clean soil penetration, efficient clod breakdown, and balanced rotor dynamics across rotary tillers and two-wheel tractors from BCS (models Rotary Tiller 705 Standard, Two-Wheel Tractor 705), Bertolini - Yabe (model Rotary Tiller S.305 HP 7.5 Helical Arc), and Grillo (model Rotary Tiller GN 10 Standard 131 Helical Arc).

Key Features & Benefits

• Forged & Through-Hardened Alloy Steel: Fabricated from 30×6 mm wear-resistant steel stock and heat-treated to retain a durable cutting edge, preventing permanent bending and brittle fractures upon collision with stones.
• Optimized Left Helical Arc (Z = 20 mm): The calibrated curvature (working reach X = 72 mm, height Y = 190 mm, lateral offset Z = 20 mm) ensures smooth ground slicing and clean soil turning while reducing engine strain and fuel usage.
• Precision 10.5 mm Mounting Holes (66 mm Spacing): Dual 10.5 mm bolt holes designed for M10 fasteners are machined to factory tolerances for BCS, Bertolini, and Grillo rotor flanges, delivering a rigid, play-free seat.
• Fine Seedbed Preparation: Ideal for secondary tillage, seedbed preparation, inter-row mechanical cultivation, and uniform incorporation of crop residues and organic fertilizers.

Technical Specifications

Application Table & Compatible Implements

Installation Technical Note: Assemble using grade 8.8 or 10.9 high-tensile M10 fasteners with self-locking nuts or lock washers. Confirm that the rotor flange hole spacing matches 66 mm center-to-center and re-tighten hardware after the first operating hour.