GRADER BLADES GRADER CUTTING EDGE

GRADER BLADES GRADER CUTTING EDGE

Grader blades, also known as cutting edges, are critical components for creating flat surfaces during leveling operations. These blades are primarily made from high-wear-resistant materials such as 30MnB boron steel or high-carbon steel, undergoing specialized heat treatment to achieve surface hardness of HRC44-52 with a hardened depth of 8mm–12mm .

Three main types exist: curved, flat, and serrated edges. Curved blades excel in fine grading and finishing due to superior penetration and rolling action . Common dimensions include lengths of 6–7 feet (e.g., model 5D9558: 6ft, 5D9559: 7ft), widths of 152–203mm, and thicknesses of 12.7–25.4mm .

Blades face intense wear on the underside from soil interaction. Research shows wear pressure correlates with the displacement angle, emphasizing the need for robust material selection . Leading manufacturers offer blades compatible with Caterpillar, Komatsu, and other major brands, with performance claimed to be 15–20% higher than market alternatives due to advanced heat treatment .

Key models like 5D9559 (7ft long, 25mm thick, 17 bolt holes) and 4T2236 (2438mm long, 25mm thick) highlight the balance of durability and adaptability for mining, construction, and roadwork