Hertel H08614844 Indexable Boring Bar 0.347 in Min Bore

Product Description

The HERTEL H08614844 is a solid carbide indexable boring bar designed for precision internal turning and boring operations on CNC and manual lathes. Built to the HBBG toolholder style, it accepts WPGT indexable inserts secured by a screw-clamp holding method for repeatable insert positioning. The bar features a 5/16 inch shank diameter and an overall length of 6 inches, with a minimum bore diameter of 0.347 inches and a maximum bore depth of 3.12 inches. Coolant-through capability supports chip evacuation and thermal control in deep-bore applications. This tool is sized for small-bore work and is handled by machinists and tool-and-die professionals.

This boring bar is suited for small-diameter internal machining in precision manufacturing environments, including production turning, job shops, and toolroom applications. Its right-hand cut orientation positions it for standard lathe setups where the spindle rotates counterclockwise when viewed from the tailstock. The WPGT insert compatibility gives the operator flexibility in selecting insert geometry and grade to match the workpiece material. Applications include finish boring of through holes and blind bores in ferrous and non-ferrous materials where tight diameter tolerances are required.

Key Features

• Solid carbide construction for rigidity and vibration resistance in small-diameter boring
• Minimum bore diameter of 0.347 inches with maximum bore depth of 3.12 inches
• Screw-clamp insert holding for secure, repeatable WPGT insert seating
• Coolant-through design to improve chip clearance and extend insert life
• Right-hand cut orientation for standard lathe configuration
• 5/16 inch shank diameter fits common small-bore tooling setups

Compatibility

Designed for use with WPGT indexable inserts. Toolholder style HBBG. This bar is an OEM-style precision boring bar intended for lathes and turning centers equipped to accept a 5/16 inch round shank toolholder.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's tooling setup procedures. Confirm the shank is clamped securely in the tool block or boring bar holder with sufficient overhang minimized to reduce deflection. Power down and lock out the machine before changing inserts or adjusting the toolholder. Use the correct torque driver for the WPGT insert screw to avoid stripping the clamp pocket.