Sumitomo 16DTCEE Turning Insert BNC200 Pcbn Diamond

Product Description

The SUMITOMO 16DTCEE is a Polycrystalline Cubic Boron Nitride (PCBN) turning insert with a Titanium Nitride (TiN) coating applied via PVD process. Carrying the manufacturer grade BNC200, this insert is built for machining hard and difficult-to-cut materials on CNC lathes and turning centers. The diamond-shaped insert features a 55-degree included angle, a negative rake geometry, and 4 usable cutting edges. Insert thickness is 0.1875 inches and the inscribed circle diameter is 0.5 inches. With a 1/32-inch corner radius and a maximum depth of cut of 0.0150 inches, it is suited for finish and semi-finish turning passes where tight tolerances are required. Machinists and tooling specialists working in aerospace, automotive, and hardened-steel applications will find this grade well-matched to the demands of interrupted and continuous cuts on hard materials.

The 16DTCEE is designed for turning operations on hardened steels, heat-treated alloys, and other hard workpiece materials typically classified under secondary workpiece material code H. It fits into toolholders that accept the ANSI style 4NCDNGA432 or ISO equivalent 4NC-DNGA150408 insert seats. The holding method is clamp and pin, which is the standard configuration for negative-rake diamond inserts in this size range. This insert is appropriate for both production turning environments and job-shop applications where PCBN tooling is selected over carbide for its superior hot hardness and wear resistance in hard-material cutting.

Key Features

• PCBN insert material with TiN coating via PVD process for extended tool life in hard-material applications
• BNC200 manufacturer grade optimized for hardened steels and difficult-to-machine alloys
• 4 cutting edges per insert maximizing value per piece
• Negative rake geometry with 55-degree diamond shape (Insert Shape Code D) for controlled chip formation
• Clamp and pin holding method compatible with standard negative-rake toolholders
• Conforms to ANSI and ISO 13399 standards for interchangeability and documentation

Compatibility

Designed to fit toolholders conforming to ANSI insert style 4NCDNGA432 or ISO designation 4NC-DNGA150408. Clearance code N and tolerance code G apply. Verify toolholder specifications before ordering to confirm seat geometry and clamping compatibility.

Installation Notes

Insert replacement and seating should be performed by a qualified machinist or tooling technician with the machine powered down and the spindle fully stopped. Ensure the insert pocket and clamping surfaces are free of chips and debris before seating the insert. Torque clamp screws according to the toolholder manufacturer specifications — do not over-torque, as PCBN inserts are brittle and susceptible to fracture from uneven clamping pressure. Follow your facility safety standards when handling sharp cutting inserts.