Hertel H59870451 Indexable Boring Bar 0.668 in Right Hand

Product Description

The HERTEL H59870451 is a steel-body indexable boring bar designed for internal diameter machining on lathes and turning centers. Built to the HBBS toolholder style, it accepts TD and TP series indexable inserts secured by a screw clamping method. The bar has a 0.668-inch minimum bore diameter, a 0.5-inch shank diameter, and an overall length of 6 inches. Coolant-through capability supports chip evacuation and tool life in production boring operations. Machinists and toolroom technicians use this type of toolholder when a reliable, repeatable insert platform is required for finish or semi-finish boring work.

This boring bar is suited for use on CNC lathes, manual engine lathes, and turning centers in job shop and production environments. Its right-hand cut orientation makes it the standard choice for conventional spindle-rotation boring on a majority of horizontal turning setups. The maximum bore depth of 4.5 inches allows it to reach through moderate-depth bores without requiring an extended-reach variant. It is a single-purpose toolholder and is not configured as a multi-use tool.

Key Features

• HBBS toolholder style with screw-clamp insert holding for positive, repeatable insert seating
• Accepts TD and TP series indexable inserts
• 0.668 inches minimum bore diameter with up to 4.5 inches maximum bore depth
• Coolant-through design for improved chip control and insert cooling
• Steel body construction for rigidity in standard boring applications
• Right-hand cut orientation for conventional spindle-rotation turning setups

Compatibility

Designed for use with TD and TP series indexable inserts. Verify insert geometry and nose radius against the specific application before ordering inserts separately.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the machine in a full stop, locked-out state per applicable OSHA lockout/tagout procedures. Confirm shank diameter matches the toolholder bore of the turret or tool block before mounting. Torque the insert clamping screw to the insert manufacturer specification using the appropriate torque key. Verify coolant-through port alignment with the machine turret coolant supply before engaging coolant flow.