Hertel 7000079 Indexable Boring Bar 0.48 in Right Hand

Product Description

The HERTEL 7000079 is a right-hand indexable boring bar designed for internal diameter turning operations on CNC lathes and manual boring applications. Built to the A-STFP toolholder style, it accepts TP.. 21.51 inserts secured by a screw-clamp holding method. The steel construction and neutral rake geometry (0 degrees) deliver stable, predictable cutting performance across a range of ferrous and non-ferrous materials. A through-coolant channel with a 0.125-inch diameter bore keeps the cutting zone cool and helps evacuate chips during deep-bore operations. Intended for use by machinists and toolroom professionals in production and job-shop environments.

This boring bar is suited for applications requiring a minimum bore diameter of 0.48 inches, making it appropriate for small-diameter internal turning work in both production and prototype settings. The 3/8-inch shank diameter and 6-inch overall length provide reach and rigidity in standard lathe toolpost or turret setups. The through-coolant feature makes it especially useful when machining deep bores or materials that generate significant heat at the cutting edge.

Key Features

• Minimum bore diameter of 0.48 inches for small internal turning operations
• A-STFP toolholder style accepts TP.. 21.51 inserts with 1/4-inch inscribed circle
• Screw-clamp insert holding method for secure, repeatable indexing
• Through-coolant capable with 0.125-inch coolant hole diameter
• Neutral rake (0 degrees) geometry for broad material compatibility
• Steel construction for durability in standard lathe environments

Compatibility

Designed for use with TP.. 21.51 series indexable inserts with a 1/4-inch inscribed circle and 3/32-inch insert thickness, in right-hand A-STFP toolholder configurations.

Installation Notes

Installation should be performed by a qualified machinist with the machine powered down and the spindle locked before seating or indexing inserts. Secure the 3/8-inch shank firmly in the toolpost or turret to the appropriate clamping torque specified by the machine manufacturer. Verify coolant line connections before enabling through-coolant flow. Follow shop safety procedures and applicable machine tool standards when setting tool height and approach angles.