Hertel 1000174 Left Hand Mtfn Indexable Turning Toolholder

Product Description

The HERTEL 1000174 is a left-hand MTFN-style indexable turning toolholder designed for negative-rake external turning operations on CNC lathes and manual turning centers. Built from steel with a 1 x 1 inch square shank and a 6 inch overall length, this toolholder accepts TN..43. series triangular inserts secured by a clamp and screw holding method. The negative 5-degree rake angle is suited for machining harder workpiece materials where edge strength and controlled chip formation are priorities. A licensed machinist or CNC turning specialist installs and operates this toolholder in production or job-shop turning environments.

This toolholder fits standard left-hand MTFN toolholder applications requiring a 1 x 1 inch shank profile. The head length measures 1.22 inches and the back-of-bar to cutting edge dimension is 1.25 inches, providing consistent tool reach and positioning in a turning setup. The insert inscribed circle is 0.375 inches, compatible with 3/8 inch TN..43. series triangular inserts. It is part of the Multi-Option series and is packaged individually as a single unit.

Key Features

• Left-hand MTFN toolholder style for external turning operations
• Negative 5-degree rake angle for edge strength on harder materials
• 1 x 1 inch steel shank, 6 inches overall length
• Clamp and screw insert holding method for secure, repeatable insert seating
• Accepts TN..43. triangular inserts with 0.375 inch inscribed circle
• No coolant-through feature; designed for standard external flood or dry cutting applications

Compatibility

Compatible with TN..43. series triangular inserts, specifically TN.. 322 insert geometry. Designed for use in standard left-hand MTFN-style toolholder seats on CNC lathes and turning centers accepting a 1 x 1 inch square shank.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before mounting or changing the toolholder or insert. Ensure the shank is fully seated and clamped in the turret or tool block per the machine manufacturer's torque and clamping specifications. Inspect the clamp and screw mechanism for wear before each insert change.