Kennametal 1553306 Milling Insert SDCT1204PDERLD KC520M

Product Description

The KENNAMETAL 1553306 is a solid carbide milling insert carrying ISO designation SDCT1204PDERLD and manufacturer grade KC520M. This square-shaped, single-sided insert features a TiAlN coating applied via PVD process, delivering wear resistance in demanding milling applications. It has a 0.5 inch inscribed circle, a thickness of 0.1875 inches, and a corner radius of 0.0315 inches (0.80 mm). The positive rake geometry and honed cutting edge style reduce cutting forces and promote clean chip formation. Designed for right-hand cutting with screw-type holding, it is installed by machinists and tool-room technicians running milling operations on CNC and manual milling machines.

This insert is engineered primarily for cast iron workpieces, corresponding to material application code K. It is compatible with the KSSM cutter series and fits toolholders designed to the SDCT43PDER8LD ANSI code. The LD chip breaker geometry supports productive material removal in cast iron milling where controlled chip flow and edge stability are critical. Each package contains one insert; the minimum order quantity is 5 inserts per order.

Key Features

• Solid carbide substrate with PVD TiAlN coating for thermal and wear resistance in cast iron milling
• Square insert shape with 90-degree included angle and 4 usable cutting edges per insert
• Positive rake angle of 15 degrees with honed cutting edge for reduced cutting forces
• Corner radius of 0.0315 inches (0.80 mm) for controlled surface finish
• LD chip breaker optimized for cast iron material applications
• Right-hand cut, screw-held mounting compatible with KSSM cutter series toolholders

Compatibility

Compatible with KSSM series milling cutters. Conforms to ISO code SDCT1204PDERLD and ANSI code SDCT43PDER8LD. Designed for right-hand screw-held toolholders accepting SDCT-series square inserts with a 0.5 inch inscribed circle.

Installation Notes

Installation is performed by qualified machinists or tool-room technicians. Always power down and lock out the machine spindle before seating or replacing inserts. Use the manufacturer-specified torx or hex key to torque the insert clamping screw; follow the toolholder manufacturer guidelines for proper seating. Inspect the insert pocket for debris or damage before installing a new insert to ensure proper seating and runout.