Hertel 1002799 Mdjn Negative Rake Indexable Turning Toolholder

Product Description

The HERTEL 1002799 is a right-hand MDJN-style indexable turning toolholder designed for negative rake insert geometries. It accepts DN..432 series inserts and is built for external turning operations on CNC lathes and manual turning centers. The toolholder features a 1-1/4 inch square shank and an overall length of 6 inches, making it suitable for standard tool post and turret mounting. At 1.19 pounds, it is a solid, machine-ready unit. The MDJN configuration positions the insert at a negative rake angle, which increases edge strength and is well-suited for interrupted cuts and harder workpiece materials. Machinists and CNC operators in production and job shop environments are the primary installers.

This toolholder is intended for external turning applications where negative rake tooling is preferred, such as turning hard steels, cast iron, and other materials that benefit from a stronger cutting edge. The 1-1/4 inch by 1-1/4 inch square shank fits standard tool post slots and turret stations sized for that shank cross-section. The 6-inch overall length suits most standard lathe setups without overhang concerns. It is catalogued under the Multi-Option series, which supports a range of insert grades and geometries for flexible shop use.

Key Features

• MDJN toolholder style with negative rake geometry for increased insert edge strength
• Right-hand cutting orientation for standard external turning passes
• Accepts DN..432 series indexable inserts
• 1-1/4 inch square shank compatible with standard tool post and turret mounting
• 6-inch overall length for stable, low-overhang setups
• Part of the Multi-Option series for broad insert grade compatibility

Compatibility

Designed to accept DN..432 series indexable inserts. Fits tool posts and turret stations with a 1-1/4 inch square shank bore. Specific machine model compatibility depends on the turret or tool post configuration of the lathe.

Installation Notes

Installation is performed by machinists or CNC setup technicians. Power down and lock out the machine before mounting or removing the toolholder from the turret or tool post. Ensure the shank seating surfaces are clean and free of chips before clamping. Confirm insert seating and screw torque per the insert manufacturer's guidelines before running the machine.