Hertel H08700189 Indexable Threading Toolholder 0.625in Shank

Product Description

The HERTEL H08700189 is an internal, right-hand indexable threading toolholder designed for precision thread-cutting operations on lathes and turning centers. Built to the HSIR series standard, it accepts 11IR inserts secured by a screw-clamp holding method, providing repeatable insert positioning during internal threading passes. The shank measures 0.625 inches in diameter and the tool runs 5.0 inches in overall length, making it suitable for moderate-depth boring and threading applications. Licensed machinists and CNC turning operators use this style of toolholder when threading bores that meet or exceed the 0.47-inch minimum bore diameter requirement.

This toolholder is intended for internal threading applications in ferrous and non-ferrous materials where a right-hand cut configuration is required. The HSIR series geometry positions the cutting edge 0.28 inches from center and 0.47 inches from the back of the bar, allowing controlled engagement in tight bore profiles. Typical install scenarios include production turning on CNC lathes and manual engine lathes where consistent thread form accuracy is critical. The style designation HSIR-0375-5-11 identifies the exact geometry, shank, length, and insert compatibility for procurement and toolcrib management.

Key Features

• Internal threading orientation with right-hand cut direction
• Accepts 11IR threading inserts with 1/4-inch inscribed circle
• Screw-clamp insert holding method for secure, repeatable seating
• 0.625-inch shank diameter with 5.0-inch overall length
• Minimum bore diameter of 0.47 inches for close-clearance threading
• Neck diameter of 0.38 inches reduces wall interference in small bores

Compatibility

Designed as an OEM-style indexable toolholder compatible with 11IR threading inserts featuring a 1/4-inch inscribed circle, following HSIR series toolholder geometry standards.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the tool turret or toolpost is in a safe index position before mounting or adjusting the toolholder. Secure the shank firmly in the toolpost or turret block to the appropriate clamping torque per machine manufacturer specifications. Inspect the insert pocket and seating surfaces for chips or debris before indexing or replacing 11IR inserts.