Seco 02825959 Pcbn Turning Insert Dnga 432 55 Degree Diamond

Product Description

The SECO 02825959 is a Polycrystalline Cubic Boron Nitride (PCBN) turning insert in the DNGA 432 format, designed for high-speed, high-hardness material removal on CNC lathes and turning centers. It features a 55-degree diamond shape, a 0.5-inch inscribed circle, a 0.0315-inch corner radius, and a flat-top chipbreaker geometry. The insert carries manufacturer grade CBN010, is uncoated (bright finish), and uses a negative rake, neutral hand orientation. With two cutting edges and a chamfered and honed cutting edge style, it delivers consistent performance in demanding interrupted and continuous cut applications on hard materials. Licensed machinists and CNC operators install this insert in production turning operations.

This insert is engineered for primary use on hard materials (ISO material code H) and secondary use on super-alloys and titanium (ISO material code S). Typical applications include back turning, boring, facing, and standard OD turning. It is well suited for finishing and semi-finishing passes where tight tolerances and surface finish quality are critical. The flat-top chip geometry and chamfered-honed edge support stable cutting in hardened steels and similar workpiece materials at elevated surface speeds.

Key Features

• PCBN insert material (manufacturer grade CBN010) rated for hard materials and super-alloys
• 55-degree diamond insert shape with 0.0315-inch corner radius for precise contouring
• Flat top chipbreaker series with chamfered and honed cutting edge for edge stability
• Neutral hand orientation compatible with back turning, boring, facing, and turning operations
• Two cutting edges per insert; multi-tipped construction for extended tool life
• Compatible with clamp, pin, and lever-lock insert holding methods
• Meets ANSI and ISO standards; ISO code DNGA150408S-01020-L1-B

Compatibility

Designed for use in DNGA-style toolholders accepting a 432 insert size with clamp, pin, or lever-lock holding methods. Industry standard number DNGA432S-00420-L1-B and ISO code DNGA150408S-01020-L1-B are applicable reference designations for cross-referencing with compatible toolholder systems.

Installation Notes

This insert is installed by qualified machinists or CNC setup technicians following the toolholder manufacturer's clamping procedure for DNGA-style inserts. Power down and lock out the machine before seating or indexing the insert. Ensure the insert pocket and clamping surfaces are clean and free of chips before installation. Do not exceed the maximum depth of cut specification of 0.0200 inches as stated by the manufacturer.