Hertel 7000049 Indexable Boring Bar 1.76 in Right Hand

Product Description

The HERTEL 7000049 is a right-hand A-MSKN indexable boring bar designed for precision internal turning and boring operations on CNC lathes and manual turning centers. Built from steel, it accepts SN-style inserts held by screw or clamp, and features through-coolant capability via a 1/4-18 NPT coolant hole thread. With a minimum bore diameter of 1.76 inches and a 14-inch overall length, this bar is suited for deep-reach boring applications where rigidity and consistent insert positioning are critical. A 5-degree negative rake angle and 15-degree lead angle are factory-set into the toolholder geometry.

This boring bar is intended for use in production and job-shop turning environments, typically installed by machinists and tooling specialists on CNC or manual lathes. Its 1.5-inch shank diameter fits standard tool post and turret block holders sized for that bore. The through-coolant feature makes it well suited for steel, stainless, and other materials where chip evacuation and heat management at the cutting zone are priorities. Negative rake geometry suits harder workpiece materials and indexable carbide insert grades commonly used in interrupted and continuous cuts.

Key Features

• Right-hand A-MSKN toolholder style for standard insert orientation
• Through-coolant with 1/4-18 NPT threaded coolant port for direct cutting-zone cooling
• Screw or clamp insert holding method for secure, repeatable insert indexing
• Negative rake at 5 degrees with 15-degree lead angle for stable cutting geometry
• 1/2-inch insert inscribed circle accepts SN-style inserts, 3/16-inch insert thickness
• Steel construction for durability in heavy-duty boring applications

Compatibility

Designed to accept SN-style indexable inserts with a 1/2-inch inscribed circle and 3/16-inch thickness. Fits tool post and turret holders with a 1.5-inch bore. No specific machine model compatibility was stated in the product data.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the machine spindle is fully stopped and the machine is locked out before mounting or removing the boring bar from the turret or tool post. Confirm shank-to-holder fit and appropriate overhang before beginning cuts, as excessive overhang beyond recommended guidelines increases vibration risk. Follow insert manufacturer torque specifications for the clamping screw when indexing inserts.