Kennametal 1937962 Indexable Boring Bar Right Hand Csbi

Product Description

The KENNAMETAL 1937962 is a right-hand CSBI-style indexable boring bar designed for precision internal turning and boring operations on CNC lathes and machining centers. Built from steel with a 3/8-inch shank diameter and an overall length of 2.5 inches, this compact bar reaches a minimum bore diameter of 0.204 inches and a maximum bore depth of 1 inch. It uses CDC and CSBI insert styles secured by a screw-clamp holding method, and features through-coolant capability for effective chip evacuation and thermal control in tight-bore applications. A 5-degree lead angle and positive rake geometry support clean, consistent cuts in small-diameter bores.

This boring bar is suited for small-bore finish and semi-finish turning operations in precision machining environments. It is appropriate for production shops, tool-and-die work, and job shops requiring tight tolerances in bores under 0.25 inches. The through-coolant feature makes it especially effective when machining materials that generate significant heat or require constant chip flushing. The CSBI toolholder style is a recognized standard for indexable small-bore applications, and this bar is cataloged under Kennametal model number CSBI-180/375-1/2-5R with catalog reference A2906XSCLDR121.

Key Features

• Minimum bore diameter of 0.204 inches for tight small-bore applications
• Maximum bore depth of 1 inch with a compact 2.5-inch overall length
• Through-coolant design with a 0.040-inch coolant hole diameter for effective chip and heat control
• Screw-clamp insert holding method for secure, repeatable indexing
• Positive rake geometry with a 5-degree lead angle and 5-degree rake angle
• Compatible with CDC and CSBI inserts with a 0.156-inch inscribed circle

Compatibility

Designed for use with CDC and CSBI indexable inserts featuring a 0.156-inch inscribed circle and 0.040-inch insert thickness. Kennametal catalog reference A2906XSCLDR121, model CSBI-180/375-1/2-5R.

Installation Notes

Installation and setup should be performed by a qualified machinist or tooling technician familiar with CNC lathe or machining center tooling. Power down and lock out the machine spindle before mounting or indexing inserts. Ensure the 3/8-inch shank is properly seated and clamped in the toolholder to the required stick-out for the target bore depth. Verify coolant-through passages are clear and compatible with the machine tool coolant system before operation.