Sandvik Coromant 5726110 Turning Insert CPMT21.51-PF 5015

Product Description

The SANDVIK COROMANT 5726110 is a solid carbide turning insert in the CPMT style, designed for precision external turning operations on CNC and manual lathes. This uncoated carbide insert carries the 5015 manufacturer grade and features an 80-degree diamond shape (insert shape code C) with a PF chip breaker geometry. The inscribed circle measures 0.2500 inches (6.35 mm), insert length is 0.2381 inches (6.05 mm), and the corner radius is 1/64 inch (0.0156 inches). It is part of the CoroTurn 111 series and is held in place via a screw-clamping method. Licensed machinists and CNC operators working in steel and cast iron applications are the primary installers of this insert.

This insert is suited for turning steel (ISO material code P) as the primary workpiece material and cast iron (ISO material code K) as a secondary application. The PF chip breaker geometry is optimized for finishing passes in these material groups. The neutral hand orientation makes it adaptable across a range of CPMT-style toolholders used in production turning environments, including light finishing and semi-finishing operations where tight tolerances and surface finish consistency are required.

Key Features

• Solid carbide construction, uncoated (bright finish) for sharp edge retention on steel and cast iron
• 80-degree diamond insert shape with 2 cutting edges for efficient edge utilization
• PF chip breaker geometry optimized for finishing operations
• Screw-clamping insert holding method for secure, repeatable seating in the toolholder
• 11-degree relief angle (clearance code P) for positive cutting action and reduced cutting forces
• ISO code CPMT 06 02 04-PF 5015 for cross-reference with standard tooling catalogs

Compatibility

Designed as an OEM-style replacement insert for CPMT-style screw-clamp toolholders in the CoroTurn 111 series. Compatible with toolholders accepting a 1/4-inch inscribed circle CPMT insert with a 2.80 mm (0.1102 inch) hole diameter.

Installation Notes

Insert replacement is performed by machinists or CNC tooling technicians. Power down and lock out the machine spindle before changing inserts. Use the appropriate Torx or hex key as specified by the toolholder manufacturer when tightening the clamping screw — do not overtighten, as this can fracture the carbide substrate. Inspect the insert seat and clamp for wear or debris before seating the new insert to ensure proper contact and repeatability.