Hertel H08614737 Indexable Boring Bar Left Hand 3/16 in Shank

Product Description

The HERTEL H08614737 is a steel indexable boring bar designed for internal turning and boring operations on CNC and manual lathes. Built to toolholder style HBBG, it accepts WPGT inserts secured by a screw-clamp holding method, providing repeatable edge indexing without removing the bar from the holder. The shank measures 3/16 inches in diameter with an overall length of 4 inches. Minimum bore diameter is 0.26 inches and maximum bore depth reaches 0.75 inches. Coolant-through capability supports chip evacuation and tool life in tight-bore applications. This bar is configured for left-hand cutting and is suited to machinists and toolroom technicians working with small-diameter bores.

This boring bar fits small-bore internal machining jobs in production and job-shop environments. The 3/16-inch shank diameter and 0.26-inch minimum bore make it appropriate for precision work on components requiring close-tolerance internal features. Left-hand cut orientation suits specific setups where conventional right-hand tooling cannot reach or where back-boring is required. Coolant-through porting helps maintain cutting temperatures and clears chips in deep, confined bores up to 0.75 inches deep.

Key Features

• Toolholder style HBBG with screw-clamp insert retention for secure, repeatable indexing
• Accepts WPGT inserts — a widely available insert geometry for internal turning
• Coolant-through design aids chip flushing in deep small-diameter bores
• Left-hand cut configuration for back-boring or non-standard spindle setups
• Steel construction balances rigidity and machinability in compact shank sizes
• 0.26 inches minimum bore diameter and 0.75 inches maximum bore depth

Compatibility

Designed for use with WPGT series inserts. Verify insert nose radius, grade, and chipbreaker geometry match the workpiece material and feed rate before installation. No additional specific model or system compatibility was stated in the product data.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and power is locked out before mounting or adjusting the boring bar. Secure the shank firmly in the toolholder to the minimum overhang required for the bore depth to reduce vibration and deflection. Confirm insert seating and screw torque per the insert manufacturer's specification before initiating a cut.