Hertel 1002870 Mtjn Indexable Turning Toolholder

Product Description

The HERTEL 1002870 is a right-hand MTJN-style indexable turning toolholder designed for use on manual and CNC lathes in metal-cutting applications. The holder accepts TN..332 series inserts and is configured with a negative rake geometry, which provides a stronger cutting edge and is well suited for interrupted cuts and harder workpiece materials. The shank measures 0.625 inches wide by 0.625 inches high with an overall length of 4.5 inches. Machinists and tool-room technicians working in production or job-shop environments use this holder for external turning operations.

This toolholder is intended for external longitudinal and facing operations on lathes equipped with standard square-shank tool posts or turret stations sized for a 0.625-inch shank. Its MTJN style designation indicates a specific insert pocket geometry and lead angle, making it part of a standardized indexable tooling system. The negative rake configuration suits roughing and semi-finishing passes on steels, cast irons, and other ferrous materials where edge strength takes priority over cutting forces.

Key Features

• MTJN toolholder style with negative rake insert seating for stronger cutting edge retention
• Right-hand cutting orientation for standard lathe setups
• Compatible with TN..332 series indexable inserts
• 0.625 inches x 0.625 inches square shank fits common tool-post and turret stations
• 4.5-inch overall length provides standard reach for external turning
• Part of the Multi-Option series for flexible indexable tooling configurations

Compatibility

Designed to accept TN..332 series indexable inserts. Fits tool-post and turret stations sized for a 0.625-inch square shank on manual and CNC lathes.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. The machine spindle must be stopped and all motion fully arrested before changing toolholders or inserts. Secure the shank firmly in the tool post or turret to the equipment manufacturer's specified clamping procedure before operation. Handle indexable inserts with care — edges are sharp and can cause injury during changeover.