Iscar 5700424 DNGA432T Ceramic Turning Insert 55D Diamond

Product Description

The ISCAR 5700424 is a ceramic uncoated turning insert designed for high-speed material removal in demanding machining applications. It carries the DNGA432T geometry with a 55-degree diamond insert shape, a 1/2-inch inscribed circle, and a 1/32-inch corner radius. The insert measures 15.5 mm (0.6102 inches) in length and 3/16 inch in thickness. With an IN23 manufacturer grade, this insert is engineered for use in CNC turning centers and lathe toolholding systems where consistent edge geometry and thermal resistance are critical. It is held in place using a clamp and pin method and conforms to ISO 13399 standards.

This insert is intended primarily for turning cast iron workpieces, where ceramic tooling provides a significant speed advantage over carbide grades. The DNGA style with clearance code N and tolerance code G is suited to precision turning operations in both roughing and finishing passes within its maximum depth of cut of 3.50 mm (0.1378 inches). It is appropriate for use in production environments where high surface footage and thermal stability are required. The T chip breaker geometry supports controlled chip formation during continuous cuts on hard or abrasive cast iron materials.

Key Features

• Ceramic uncoated substrate — optimized for dry high-speed turning of cast iron
• 55-degree diamond insert shape (DNGA style) with 1/32-inch corner radius for precise edge definition
• 1/2-inch inscribed circle with 3/16-inch insert thickness for rigid toolholder engagement
• Clamp and pin holding method for secure, repeatable seating in compatible toolholders
• Conforms to ISO 13399 for standardized tooling data integration
• T chip breaker geometry aids chip control on continuous cast iron cuts

Compatibility

Designed as an OEM-style replacement insert for DNGA432T-style toolholders accepting a 1/2-inch inscribed circle, 55-degree diamond geometry with clamp and pin clamping. Primary workpiece material compatibility is cast iron (ISO material codes H and K).

Installation Notes

This insert should be installed by a qualified machinist or tooling technician. Power down and lock out the machine spindle before changing inserts. Ensure the toolholder pocket and seating surfaces are clean and free of chips or debris before seating the insert. Follow the toolholder manufacturer torque guidelines for the clamping screw to avoid insert fracture or improper seating.