Hertel H59870188 Indexable Boring Bar 0.563 in Min Bore

Product Description

The HERTEL H59870188 is a solid carbide indexable boring bar designed for precision internal turning and boring operations on CNC lathes and machining centers. Built to the HBBQ toolholder style, it accepts TPC-style inserts secured by a screw-clamp holding method, providing repeatable insert location and reliable cutting forces during deep-bore applications. With a minimum bore diameter of 0.563 inches and a maximum bore depth of 5 inches, this bar handles demanding small-bore work where rigidity and dimensional accuracy are critical. A coolant-through design delivers cutting fluid directly to the cutting zone, extending insert life and aiding chip evacuation.

This boring bar is suited for shop environments running precision small-bore work in steel, stainless, cast iron, and similar materials on production or job-shop lathes. The right-hand cut orientation and 0.5-inch round shank fit standard boring bar holders and turret tooling blocks. With an overall length of 8 inches and a solid carbide body, it provides the stiffness necessary to minimize chatter at extended reach-to-diameter ratios. Machinists and CNC programmers working tight bore tolerances in production runs will find the consistent insert seating and coolant-through capability directly beneficial.

Key Features

• Solid carbide body resists deflection and chatter at extended boring depths
• Coolant-through design delivers fluid directly to the cutting edge for improved chip evacuation and insert life
• Screw-clamp insert holding method ensures repeatable insert indexing and secure clamping
• Minimum bore diameter of 0.563 inches with maximum bore depth of 5 inches
• Right-hand cut orientation for standard CNC lathe and turning center setups
• Accepts TPC-style indexable inserts for broad grade and geometry selection

Compatibility

Designed for use with TPC-style indexable inserts. Compatible with standard 0.5-inch round-shank boring bar holders and CNC lathe turret blocks accepting that shank diameter. No specific machine model compatibility was stated in the product data.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician with the machine in a locked-out, zero-energy state before tooling changes. Confirm shank clamping torque follows your toolholder manufacturer specifications, and verify boring bar overhang does not exceed recommended length-to-diameter ratios for the material being cut. Ensure the coolant-through supply port is clear and the machine coolant system is compatible with the bar inlet before running. Always inspect the insert seat and clamping screw condition prior to indexing or replacing inserts.