Kennametal 1950401 Indexable Boring Bar Right Hand Steel

Product Description

The KENNAMETAL 1950401 is a steel indexable boring bar designed for internal turning and bore finishing operations on CNC lathes and turning centers. It features a 0.563 inch minimum bore diameter and a 1/2 inch shank diameter, with an overall length of 6 inches and a maximum bore depth of 2 inches. The right-hand cut orientation and 5-degree lead angle suit a range of finish and semi-finish boring applications. Insert retention is via screw clamping, providing positive indexing and secure seating under cutting loads. Coolant-through capability with a 0.080 inch coolant hole diameter supports chip evacuation and tool life in deep-bore conditions.

This boring bar is suited for precision internal diameter work in ferrous and non-ferrous materials on manual and CNC turning equipment. The QSBI toolholder style and Q-series designation indicate compatibility with quick-change tooling systems used in production turning environments. It accepts TP-style inserts with a 0.250 inch inscribed circle and 0.096 inch thickness, making it appropriate for fine boring passes where dimensional accuracy and surface finish are critical. A positive rake geometry reduces cutting forces and helps maintain bore geometry in interrupted or light-feed applications.

Key Features

• 0.563 inch minimum bore diameter with 2 inch maximum bore depth
• Right-hand cut with 5-degree lead angle and positive rake geometry
• Screw-clamp insert retention for secure, repeatable indexing
• Coolant-through design with 0.080 inch coolant hole for chip control
• Accepts TP-style inserts, 0.250 inch inscribed circle, 0.096 inch thickness
• QSBI toolholder style, Q-series, catalog number QSBI-500-6-5R

Compatibility

Designed for use with TP-style inserts having a 0.250 inch inscribed circle. Toolholder style is QSBI within the Q-series quick-change system. Catalog reference number QSBI-500-6-5R.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians on CNC or manual turning equipment. Power down and lock out the machine spindle before changing inserts or adjusting the boring bar in the toolholder. Ensure the shank is properly secured in the turret or quick-change block to the equipment manufacturer's specified clamping requirements before initiating a cut. Verify coolant-through passages are clear and that insert seating surfaces are clean and free of chips before indexing or replacing inserts.