Iscar 5700436 Cbn Turning Insert Dnma 432T IB50

Product Description

The ISCAR 5700436 is a DNMA-style turning insert from the Isoturn series, manufactured with a Cubic Boron Nitride (CBN) substrate and supplied in an uncoated, bright finish. The insert features a 55-degree diamond shape with a neutral rake and a 0-degree relief angle (Clearance Code N), making it engineered for high-hardness and cast iron turning applications. It measures 15.50 mm (0.6102 inches) in length with an inscribed circle of 0.5000 inches and an insert thickness of 0.1874 inches. A 1/32-inch corner radius (0.0315 inches) is built in to balance edge strength and surface finish. The IB50 grade CBN composition is designed to handle interrupted and continuous cuts in hard and abrasive materials. Licensed machinists and CNC turning specialists are the primary installers of this tooling insert.

This insert is suited for finishing and semi-finishing operations on cast iron and hard materials, consistent with Primary Workpiece Material Codes H and K under ISO 13399 classification. The DNMA 432T geometry fits standard DNMA-compatible toolholders used on CNC lathes and turning centers in both production shop and job shop environments. The T chip breaker designation and neutral rake contribute to stable chip control at the cutting edge. Maximum depth of cut is rated at 0.50 mm (0.0197 inches), placing this insert firmly in the finishing cut range for demanding material groups.

Key Features

• Cubic Boron Nitride (CBN) insert material rated for hard materials and cast iron (Material Codes H and K)
• 55-degree diamond insert shape (DNMA style, Insert Shape Code D) for tight clearance and profiling capability
• IB50 manufacturer grade with bright, uncoated finish for consistent edge geometry out of the box
• 0.0315-inch corner radius balances cutting-edge strength with surface finish requirements
• Clamp and pin holding method for secure seating in compatible DNMA toolholders
• Compliant with ISO 13399 tooling data standards for seamless integration into CAM and tool management systems

Compatibility

Designed as a direct-fit replacement for DNMA 432-style toolholder pockets accepting a 0.5000-inch inscribed circle insert with clamp and pin retention. Specific compatible toolholder model numbers were not provided in the product data; verify pocket geometry and holding method against your toolholder documentation before ordering.

Installation Notes

Insert seating and clamping should be performed by a qualified machinist following the toolholder manufacturer's torque and clamping procedure for DNMA-style pockets. Power down and lock out the CNC machine spindle before changing inserts. Inspect the insert pocket and locating pin for wear or debris before seating the new insert to ensure proper contact and prevent premature edge failure. CBN inserts are brittle relative to carbide; avoid impact or dropping during handling.