Hertel 1000159 Neutral Indexable Turning Toolholder

Product Description

The HERTEL 1000159 is a neutral-hand MTEN-style indexable turning toolholder designed for negative rake metal cutting operations. Built from steel, this toolholder accepts TN..33. series inserts secured by a clamp and screw holding method. The shank measures 0.625 inches wide by 0.625 inches tall, with an overall length of 4.5 inches. The negative 10-degree rake angle suits applications where edge strength and chip control are priorities on harder or interrupted cuts. Licensed machinists and toolroom operators specify this style for external turning on CNC and manual lathes where repeatable insert indexing reduces setup time.

The HERTEL 1000159 is suited for external turning operations in production and toolroom environments. Its MTEN geometry fits standard square-shank toolpost and turret stations accepting a 0.625 inch shank. The 3/8-inch insert inscribed circle (0.375 inches) and a head length of 1.16 inches keep the cutting edge close to centerline, making it practical for shoulder turning and general profiling. This toolholder does not feature coolant-through capability and is intended as a single-application holder rather than a multi-use platform.

Key Features

• Neutral hand orientation — mounts on either side of the centerline depending on setup
• Negative 10-degree rake angle for improved edge strength on harder workpiece materials
• Clamp and screw insert retention for secure, repeatable indexing
• Accepts TN..33. (TN.. 332) series triangular inserts with 3/8-inch inscribed circle
• Steel construction for rigidity under interrupted and continuous cuts
• Part of the Multi-Option series for broad insert and application flexibility

Compatibility

Compatible with TN..33. series inserts, specifically TN.. 332 triangular indexable inserts with a 3/8-inch (0.375 inches) inscribed circle. Fits standard 0.625 inch square-shank toolpost and turret stations. Manufacturers catalog reference MTENNS103.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before changing or indexing inserts. Torque the clamp screw to the insert manufacturer's specification using the appropriate hex key — do not over-tighten or substitute fasteners. Confirm tool centerline height and overhang before resuming cuts.