Hertel 1000196 Lh Mvjn Indexable Turning Toolholder

Product Description

The HERTEL 1000196 is a left-hand MVJN-style indexable turning toolholder designed for external turning operations on CNC lathes and manual turning centers. It features a negative rake geometry and accepts VN..33. series inserts secured by a clamp and screw holding method. The shank measures 1 inch wide by 1 inch tall with an overall length of 6 inches, making it a standard square-shank toolholder suited to a wide range of lathe turret sizes. Licensed machinists and CNC operators install this toolholder in production and job-shop turning applications where insert indexability reduces downtime and maintains consistent cutting geometry.

This toolholder is intended for left-hand turning passes where the tool cuts from left to right relative to the workpiece. The MVJN style with its 3-degree lead angle suits finishing and light roughing cuts on steel, cast iron, and similar materials. The 1-inch square shank fits standard ANSI tool blocks and turret stations commonly found on mid-size CNC lathes. The back of bar to cutting edge distance is 1.25 inches, and the head length is 1.66 inches, allowing predictable tool offset entry during setup.

Key Features

• Left-hand MVJN toolholder style with 3-degree lead angle and negative rake geometry
• Accepts VN..33. series inserts (3/8 inch inscribed circle) via clamp and screw retention
• 1 inch x 1 inch square shank fits standard ANSI lathe turret tool blocks
• 6-inch overall length provides reach for typical OD turning setups
• Steel construction for rigidity and resistance to cutting forces
• No coolant-through capability — external coolant delivery required

Compatibility

Designed to accept VN..33. series indexable inserts, specifically the VN.. 332 insert style. Fits standard 1 inch x 1 inch square-shank tool blocks and turret stations on CNC and manual lathes. No specific machine model compatibility was stated in the product data.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Power down and lock out the lathe spindle before mounting or removing the toolholder from the turret. Torque the insert clamp screw according to the insert manufacturer specifications and inspect the insert seat for chips or debris before seating a new insert. Verify tool offset and edge height to centerline after installation before taking a cut.