Parlec C121615TTP Boring Insert Ccmt 80 Diamond 1/2 in Ic

Product Description

The PARLEC C121615TTP is a CCMT-style solid carbide boring insert designed for precision internal turning and boring operations on CNC and manual lathes. Coated with a multilayer TiN/TiC/TiN finish for improved wear resistance and tool life, this insert features an 80-degree diamond shape with a positive rake geometry and a 7-degree relief angle. The 1/64-inch corner radius and 0.5-inch inscribed circle (IC) make it well suited for fine finishing passes in bores requiring tight dimensional control. Installed by machinists and toolroom technicians, the C121615TTP is a direct drop-in for compatible CCMT toolholders.

This insert is used in metal cutting applications involving internal boring on ferrous and non-ferrous workpieces. The CCMT insert style with positive rake is commonly selected for finishing and semi-finishing cuts where reduced cutting forces and clean surface finish are priorities. At 3/16 inches thick with a 0.216-inch hole diameter, it seats securely in standard CCMT boring bar toolholders used in both job shop and production machining environments.

Key Features

• CCMT insert style with 80-degree diamond shape for stable, rigid cutting geometry
• Multilayer TiN/TiC/TiN coating extends wear resistance and cutting tool life
• Positive rake angle of 15 degrees reduces cutting forces for cleaner bore finishes
• 1/64-inch corner radius suited for fine finishing and tight-tolerance boring
• 0.5-inch inscribed circle (IC) and 3/16-inch thickness for secure seating in standard CCMT holders
• 7-degree relief angle minimizes rubbing and supports precise diameter control

Compatibility

Designed as an OEM-style replacement insert for standard CCMT boring bar toolholders accepting a 1/2-inch inscribed circle, size code 121615 insert.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician with the machine powered down and locked out per OSHA lockout/tagout procedures. Seat the insert fully against the pocket surfaces before torquing the clamping screw - do not force or strike the insert. Inspect the toolholder pocket for wear or damage before installing a new insert. Always verify insert orientation and rake direction against the toolholder specification before resuming cuts.