Sandvik Coromant 7859056 Turning Insert DCMX32.51-WF 4415

Product Description

The SANDVIK COROMANT 7859056 is a solid carbide turning insert in the CoroTurn 107 series, designed for precision external turning operations on CNC lathes and turning centers. The insert carries ISO designation DCMX 11 T3 04-WF 4415 and features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN over a carbide substrate. Grade 4415 targets steel and cast iron workpieces where controlled chip formation and wear resistance are priorities. The WF chip breaker geometry produces tight, manageable chips at light to medium depths of cut. With a 55-degree diamond shape, a 0.4 mm corner radius, and a neutral hand orientation, this insert suits a wide range of profiling and finishing passes.

This insert is used in turning applications on steel (ISO material code P) and cast iron (ISO material code K) across residential machine shops and industrial production environments. It seats into DCMX-style holders using clamp or screw clamping methods. The CoroTurn 107 series is a common platform in production turning for its reliable chip control and consistent tool life across moderate cutting parameters. Two cutting edges per insert are available, making edge management straightforward on a busy production floor. Licensed machinists, CNC operators, and toolroom technicians are the primary installers and users of this insert.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for wear resistance on steel and cast iron
• Grade 4415 carbide substrate suited for ISO P (steel) and ISO K (cast iron) workpieces
• WF chip breaker geometry for controlled chip formation at light to medium feeds
• 55-degree diamond insert shape (code D) provides two usable cutting edges per insert
• Neutral hand orientation compatible with both right-hand and left-hand toolholder setups
• Clamp and screw holding methods supported for secure seating in compatible holders

Compatibility

Designed for use in DCMX-style CoroTurn 107 series toolholders. ISO code DCMX 11 T3 04-WF 4415. Manufacturers catalog number DCMX 3(2.5)1-WF 4415. Compatible with holders accepting a 55-degree diamond insert with a 0.1732-inch (9.53 mm) inscribed circle and clamp or screw clamping.

Installation Notes

Installation is performed by CNC machinists or toolroom technicians with the machine powered down and in a locked-out, tagged-out state before any insert change. Ensure the insert pocket and seating surfaces are clean and free of chips before seating the new insert. Follow the toolholder manufacturer's specified clamping procedure for DCMX-style inserts to achieve proper seating and edge registration. Inspect the insert edge condition before and after each run to confirm the correct cutting edge is engaged.