Hertel 7000392 Indexable Boring Bar 1.47in Min Bore Rh

Product Description

The HERTEL 7000392 is a right-hand indexable boring bar designed for precision internal turning and boring operations on CNC lathes and machining centers. Built to the A20UCTFPR3 toolholder style, it accepts TP.. 322 series inserts and features a through-coolant design with a 1/4-18 NPT coolant port for effective chip evacuation and heat management at the cutting zone. The steel shank measures 1.25 inches in diameter and 14 inches in overall length, providing rigidity for deep-reach applications. Minimum bore diameter is 1.47 inches, with a maximum bore depth of 3.75 inches. This bar is suited to machinists and CNC operators running production or job-shop boring work where consistent insert indexing and coolant delivery are required.

The HERTEL 7000392 is used in horizontal and vertical CNC turning applications requiring a right-hand boring bar with substantial reach. The 14-inch overall length allows access to deep bores that shorter bars cannot reach. The Series A designation and TP.. 322 insert compatibility make this bar a direct fit for shops already standardized on HERTEL Series A tooling systems. Typical applications include finish and semi-finish boring of steel, cast iron, and similar materials in both production and low-volume machining environments. Licensed machinists and CNC setup technicians are the primary installers and users of this tooling.

Key Features

• Right-hand A20UCTFPR3 toolholder style with TP.. 322 insert compatibility
• Through-coolant design with 1/4-18 NPT coolant port for directed coolant delivery
• 1.47 inches minimum bore diameter with 3.75 inches maximum bore depth
• 14 inches overall length and 1.25 inches shank diameter for deep-reach rigidity
• Steel construction for durability under continuous cutting loads
• Single-purpose boring application — not a multi-use tool

Compatibility

Designed for use with TP.. 322 series inserts in the HERTEL Series A boring bar system. Minimum bore diameter when using a triangle insert cartridge is 0.375 inches. Verify insert geometry and grade selection against your specific workpiece material and cutting parameters before use.

Installation Notes

This boring bar is installed and set up by qualified CNC machinists or tooling technicians. Ensure the machine spindle and turret are fully powered down and in a safe state before changing or indexing tooling. Secure the 1.25-inch shank in a properly sized boring bar holder or turret block, confirming adequate clamping torque per your machine tool builder specifications. Connect the through-coolant supply to the 1/4-18 NPT port using a compatible fitting and verify coolant flow before initiating a cut.