Hertel 1000120 Mrgn Indexable Turning Toolholder

Product Description

The HERTEL 1000120 is a right-hand MRGN-style indexable turning toolholder designed for negative-rake external turning operations on CNC and manual lathes. Built from steel, it accepts RN..64. series inserts held in place by a clamp and screw clamping method. The toolholder features a -5 degree rake angle and a 15-degree lead angle, providing stable, predictable cutting geometry suited for general-purpose turning of ferrous and non-ferrous materials. At 6 inches overall length with a 1.5 inch by 1.5 inch square shank, it fits standard tool blocks and quick-change holders common in production turning environments. Licensed machinists and CNC operators are the primary installers of this toolholder.

This toolholder is intended for use in production turning centers, engine lathes, and turret lathes where negative-rake insert geometry is preferred for heavier cuts and longer tool life. The MRGN style is commonly used in both roughing and finishing operations where controlled chip formation and insert rigidity are priorities. The 3/4 inch insert inscribed circle supports a substantial cutting edge engagement suitable for moderate to heavy stock removal. The absence of coolant-through capability makes this toolholder appropriate for external turning applications where flood or mist coolant is applied conventionally.

Key Features

• Right-hand cutting orientation for standard OD turning setups
• Negative rake angle of -5 degrees with 15-degree lead angle for stable chip control
• Clamp and screw insert retention system for secure, repeatable insert seating
• 1.5 inch by 1.5 inch square steel shank fits standard tool block stations
• Compatible with RN..64. series round inserts with 3/4 inch inscribed circle
• 6 inch overall length with 1.31 inch head length for rigid overhang characteristics

Compatibility

Designed to accept RN..64. series round indexable inserts with a 3/4 inch inscribed circle. Insert holding is achieved via clamp and screw method. Refer to the RN..64. insert series selection guides for grade and geometry choices compatible with this holder.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Secure the toolholder in the tool block or turret station according to machine manufacturer torque guidelines before engaging the spindle. Ensure the machine is fully powered down and the spindle is locked before changing inserts or repositioning the holder. Follow shop safety protocols and applicable OSHA machine guarding requirements when working on turning equipment.