Sandvik Coromant 5961307 Grooving Insert Corothread 266

Product Description

The SANDVIK COROMANT 5961307 is a solid carbide grooving insert designed for threading and grooving operations on CNC lathes and turning centers. Part of the CoroThread 266 series, this left-hand insert features a TiCrAlN/TiN coating applied via PVD process, providing wear resistance and extended tool life under demanding cutting conditions. It carries a 1.1 mm cutting width and a maximum depth of cut of 1.3 mm, making it suited for precision internal and external groove profiles in small-diameter work. Machining professionals and CNC tooling specialists install this insert as a direct replacement component in compatible CoroThread 266 toolholders.

This insert is used in precision turning applications where controlled groove geometry is required, including thread relief grooves, snap-ring grooves, and shallow profiling cuts. The neutral rake angle and C-style chip breaker support consistent chip evacuation in both ferrous and non-ferrous materials. The insert size designation is 0.375 with an ISO code of 254LG-16CC01-110 1135 and manufacturer grade 1135, placing it in a defined performance tier for finishing and semi-finishing cuts. It is appropriate for production environments and job-shop settings where repeatable groove tolerances are critical.

Key Features

• Solid carbide substrate with PVD-applied TiCrAlN/TiN coating for elevated wear resistance
• 1.1 mm cutting width with a maximum depth of cut of 1.3 mm
• Left-hand cutting orientation for specific toolholder configurations
• Neutral rake angle with C-style chip breaker for controlled chip formation
• Corner radius of 0.08 mm for precise groove floor geometry
• Multi-use insert compatible with CoroThread 266 series tooling system

Compatibility

Designed for use with SANDVIK COROMANT CoroThread 266 series toolholders accepting insert seat size 0.375. ISO code 254LG-16CC01-110 1135 and manufacturers catalog number 254LG-16CC01-110 1135 can be used to confirm toolholder fitment. Verify left-hand orientation requirement before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Disengage the machine spindle and confirm the turret is fully indexed and locked before handling inserts. Use the appropriate Torx or hex key as specified by the toolholder manufacturer when seating the insert clamp screw — do not overtighten by feel alone; follow the toolholder documentation. Inspect the insert pocket and seating surface for chips or debris before installing a new insert to ensure proper seating and geometric accuracy.