Hertel 1000122 Lh Mrgn Indexable Turning Toolholder

Product Description

The HERTEL 1000122 is a left-hand MRGN-style indexable turning toolholder designed for negative-rake external turning operations on CNC lathes and manual turning centers. Built from steel with a 1 inch by 1 inch square shank and a 6-inch overall length, this toolholder accepts RN..43.. series inserts secured by a clamp and screw holding method. The negative rake angle of -5 degrees suits interrupted cuts and harder workpiece materials where edge strength is critical. It is a non-coolant-through design intended for standard wet or dry turning setups. Licensed machinists and CNC operators install this holder in production and job-shop environments.

This toolholder is suited for left-hand turning applications where the tool feeds from left to right or requires a specific hand orientation based on machine configuration or part geometry. The 15-degree lead angle and 1.25-inch back-of-bar to cutting edge dimension position the insert correctly for general external turning passes. The 0.5-inch insert inscribed circle accommodates the RN..43.. insert family, making it a straightforward drop-in for shops already running that insert series. It fits a broad range of production turning scenarios in both small-batch and high-volume settings.

Key Features

• Left-hand MRGN toolholder style with -5 degree negative rake angle
• 1 inch by 1 inch square shank, 6 inches overall length
• Clamp and screw insert holding method for secure, repeatable insert positioning
• Accepts RN..43.. series inserts with 0.5-inch inscribed circle
• Steel construction for rigidity and durability in turning applications
• 15-degree lead angle with 1.25-inch back-of-bar to cutting edge measurement

Compatibility

Compatible with RN..43.. series indexable inserts. Designed as an OEM-style toolholder for left-hand external turning applications using the MRGN style on standard CNC or manual lathes.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Power down and lock out the machine before inserting or changing the toolholder or insert. Secure the shank firmly in the tool turret or tool post per machine manufacturer torque guidelines. Inspect the insert seat and clamping screw for debris before seating a new insert.