Hertel 7000083 Indexable Boring Bar 0.48 in Left Hand

Product Description

The HERTEL 7000083 is a left-hand indexable boring bar designed for precision internal turning operations on metal-cutting lathes and machining centers. Built from steel, it accepts A-STFP style inserts secured by a screw-clamp holding method and features a through-coolant channel to direct fluid directly to the cutting zone. The 3/8-inch shank diameter and 6-inch overall length make it well suited for reaching into confined bore geometries. A neutral rake angle of 0 degrees provides a stable cutting geometry across a range of workpiece materials. This toolholder is selected and installed by machinists and tool-room technicians in production and job-shop environments.

The 7000083 is intended for boring operations requiring a minimum bore diameter of 0.48 inches. The through-coolant capability makes it practical for deep-bore applications where chip evacuation and heat control are critical. The left-hand orientation suits specific spindle rotation or part-geometry requirements where a right-hand bar is not appropriate. The back-of-bar to cutting edge and center-to-cutting-edge dimensions are both 0.25 inches, supporting accurate tool offset setup.

Key Features

• Minimum bore diameter of 0.48 inches for small-bore internal turning
• Left-hand holder orientation for reverse-rotation or specific geometry applications
• Through-coolant channel with a 0.125-inch coolant hole diameter for direct cutting-zone cooling
• Screw-clamp insert holding method for secure, repeatable insert seating
• Accepts 1/4-inch inscribed circle, 3/32-inch thick A-STFP TP.. series inserts
• Neutral 0-degree rake angle for broad material compatibility

Compatibility

Designed for use with A-STFP style TP.. series indexable inserts with a 1/4-inch inscribed circle and 3/32-inch insert thickness. Fits machine spindles and toolpost setups accommodating a 3/8-inch shank diameter.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Secure the 3/8-inch shank firmly in the toolholder or turret and verify tool offset values match the 0.25-inch center-to-cutting-edge dimension before cutting. Connect the through-coolant supply line before running the spindle and confirm coolant flow is unobstructed. Always index or replace the insert with the machine stopped and power isolated from the spindle drive.