Hertel SHCCGA3251630BN Turning Insert Pcbn Diamond

Product Description

The HERTEL SHCCGA3251630BN is a polycrystalline cubic boron nitride (PCBN) turning insert designed for precision machining of hardened steels, cast irons, and superalloys. Carrying manufacturer grade HT630BN in an uncoated finish, this insert features an 80-degree diamond shape with a 3/8 inch inscribed circle and a 1/64 inch corner radius. The SH-CCGA insert style uses a screw holding method for secure seating in compatible toolholders. Licensed machinists and CNC lathe operators working in production or job-shop environments are the primary installers of this insert.

This insert is suited for finish and semi-finish turning applications where tight tolerances and superior surface finish are required on difficult-to-machine materials. The 80-degree diamond geometry provides a strong cutting edge with good access to shoulders and contours. The PCBN substrate delivers the hardness and thermal stability needed for dry or minimum-quantity-lubrication cuts at elevated speeds. Typical applications include turning hardened bearing races, camshafts, and other heat-treated ferrous components. This insert is sold individually with a minimum order quantity of 10 units.

Key Features

• Polycrystalline cubic boron nitride (PCBN) substrate for high-hardness machining
• Uncoated HT630BN grade optimized for hardened steels and cast iron
• 80-degree diamond insert shape for strong edge geometry and shoulder access
• 1/64 inch corner radius for fine surface finish on finish-turning passes
• Screw-clamp holding method ensures rigid, repeatable insert seating
• 7-degree relief angle (clearance code C) reduces flank wear contact

Compatibility

Designed for use in toolholders accepting the SH-CCGA insert style with a screw holding method, tolerance code G, and chip breaker designation A. Verify toolholder pocket geometry against insert size code 32.51 and hole diameter of 0.2030 inches before installation.

Installation Notes

Turning inserts of this type are installed and indexed by qualified machinists or CNC setup technicians. Always power down and lock out the machine spindle before changing or indexing an insert. Use the correct torque screwdriver or wrench specified by the toolholder manufacturer to seat the clamping screw — do not overtighten, as PCBN substrates are brittle and can crack under excessive clamping force. Inspect the toolholder pocket for chips or debris before seating the new insert.