Hertel 1000094 Lh Mcln Indexable Turning Toolholder

Product Description

The HERTEL 1000094 is a left-hand MCLN-style indexable turning toolholder designed for negative rake cutting operations on CNC and manual lathes. Built from steel with a 0.5 inch by 0.5 inch shank and an overall length of 4 inches, this toolholder uses a clamp and screw insert holding method for secure, repeatable insert seating. It accepts CN..32. series inserts with a 0.375 inch inscribed circle, making it a practical choice for general-purpose external turning where a left-hand approach angle is required. Installation and setup are straightforward for machinists and tool crib technicians working in production or job shop environments.

This toolholder fits standard external turning applications where a left-hand cutting direction and negative rake geometry are specified. The MCLN style provides a 5-degree lead angle suited to longitudinal turning and facing operations. The 0.75 inch back-of-bar to cutting edge dimension allows for consistent tool height setup. It is used in both production and maintenance machining environments on steel, cast iron, and similar workpiece materials where CN..32. inserts are the specified tooling standard.

Key Features

• Left-hand MCLN toolholder style with 5-degree lead angle for directional turning operations
• Negative rake geometry compatible with CN..32. series inserts
• Clamp and screw insert holding method for rigid, repeatable insert indexing
• 0.5 inch by 0.5 inch steel shank with 4 inch overall length
• 0.375 inch insert inscribed circle for CN..32. insert family
• 0.75 inch back-of-bar to cutting edge for consistent tool height setup

Compatibility

Accepts CN..32. series indexable inserts, specifically compatible with CN.. 322 inserts. Designed as a replacement or direct-fit toolholder for setups specifying MCLN-style left-hand negative rake external turning toolholders with a 0.5 inch shank.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Before changing inserts or mounting the toolholder, ensure the machine spindle is fully stopped and the machine is placed in an e-stop or lockout state per shop safety procedures. Set tool height to centerline using the 0.75 inch back-of-bar to cutting edge dimension as a reference. Follow the toolholder manufacturer torque guidelines for the clamp screw to avoid insert movement during cutting.