Hertel H59868398 Indexable Boring Bar 0.222 in Solid Carbide

Product Description

The HERTEL H59868398 is a solid carbide indexable boring bar designed for internal turning and boring operations on CNC lathes and machining centers. Built to the HBBC toolholder style, it accepts CD-series inserts secured by a screw clamping method, providing repeatable insert indexing and rigid tool engagement. The minimum bore diameter is 0.222 inches, the shank diameter is 3/16 inches, and the overall length is 4 inches. Coolant-through capability is included, supporting chip evacuation and tool life in demanding bore finishing applications. This bar is intended for right-hand cutting. Machinists and toolroom technicians working in precision bore sizing will find this geometry well matched to tight-tolerance internal features.

This boring bar suits small-diameter internal boring applications in production and job-shop environments. It is appropriate for use in CNC turning centers and live-tool lathes where a 3/16-inch shank fits the toolholder block. The maximum bore depth reaches 1.875 inches (1-7/8 inches), making it capable of moderate-depth finish boring passes. It is a single-purpose, right-hand toolholder and is not configured for multi-use or left-hand operation. Typical applications include bore sizing, light roughing, and finish passes in ferrous and non-ferrous workpiece materials.

Key Features

• Solid carbide construction provides rigidity and vibration resistance in small-bore applications
• Minimum bore diameter of 0.222 inches suits tight internal feature requirements
• Maximum bore depth of 1.875 inches (1-7/8 inches) handles moderate-depth passes
• Screw clamp insert retention ensures secure, repeatable CD-series insert indexing
• Coolant-through design supports chip flushing and extended insert life
• Right-hand cut orientation; 3/16-inch shank diameter for standard small-bore toolblocks

Compatibility

Designed to accept CD-series indexable inserts. Compatible with toolholder blocks accepting a 3/16-inch shank diameter. Specific compatible insert grades and geometries should be confirmed against the CD insert series specifications for the target workpiece material.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Secure the shank fully within the toolholder block to the recommended grip length before operation; insufficient shank engagement increases deflection risk in small-diameter bores. Ensure the machine spindle is fully stopped and the turret is de-energized before inserting or indexing the bar. Follow the insert manufacturer torque guidelines for the clamping screw to prevent insert movement or screw damage during cuts.