Hertel H59874966 Boring Insert TD6P01 HT540B Solid Carbide

Product Description

The HERTEL H59874966 is a solid carbide boring insert designed for precision internal turning and boring operations on CNC and manual lathes. Manufactured to the TD6P01 insert style in grade HT540B, this uncoated triangular insert features a 60-degree included angle, a 0.002-inch corner radius, and a 3/8-inch inscribed circle (IC). The 11-degree relief angle provides clearance to reduce rubbing during finish boring passes. At 0.127 inches thick and weighing 0.03 pounds, this insert seats securely via screw-hold clamping in compatible TD6P-style boring bars. It is suited for machinists and toolroom technicians working with ferrous and non-ferrous materials where uncoated carbide is preferred.

This insert is used in boring bar applications requiring a triangular, 60-degree geometry for tight-tolerance internal diameter work. The uncoated HT540B grade carbide is appropriate for applications where coating could affect dimensional consistency or where re-grinding is part of the shop workflow. Typical installation scenarios include CNC turning centers and manual lathes performing finish boring, contour boring, or light roughing on metal workpieces. The screw-clamp holding method ensures repeatable insert indexing across all three cutting edges.

Key Features

• Solid carbide construction in uncoated HT540B grade for consistent cutting performance
• 60-degree triangular shape with 3 usable cutting edges per insert
• 0.002-inch corner radius for fine surface finish in boring applications
• 11-degree relief angle reduces tool pressure and workpiece rubbing
• Screw-hold clamping method for secure, repeatable seating in TD6P-style boring bars
• 3/8-inch inscribed circle and 0.127-inch thickness conform to standard insert pocket dimensions

Compatibility

Designed as a direct-fit replacement for TD6P01-style insert pockets in boring bars and holders accepting a 60-degree triangular solid carbide insert with a 3/8-inch inscribed circle and screw-hold clamping.

Installation Notes

Insert replacement should be performed by a qualified machinist or toolroom technician with the machine powered down and all spindle motion fully stopped. Use the appropriate Torx or hex key to loosen the clamp screw, remove the spent insert, seat the new insert fully into the pocket, and torque the clamp screw to the boring bar manufacturer's specified value. Inspect the insert pocket and clamp for chips or debris before seating the new insert to avoid micro-fractures from uneven clamping. Index or replace all cutting edges before discarding the insert body.