Kennametal 1152747 Indexable Boring Bar Left Hand E-sdup

Product Description

The KENNAMETAL 1152747 is a left-hand indexable boring bar designed for precision internal turning operations on CNC lathes and machining centers. Built from solid carbide, this E-SDUP style toolholder accepts DP-series inserts secured by screw clamping and features a through-coolant channel to support high-speed, continuous cutting. The bar has a minimum bore diameter of 24.89mm (0.980 inches), a 3/4-inch shank diameter, and an overall length of 254mm (10.0 inches). A neutral rake angle and a -3-degree lead angle make it well suited for stable finishing and semi-finishing passes in tight bores. Installation and setup are typically performed by machinists and CNC tooling technicians.

This boring bar is intended for internal boring applications where a left-hand cutting orientation is required. Through-coolant delivery directly to the cutting zone improves chip evacuation and extends insert life during deep-bore or high-feed operations. The 24.89mm minimum bore diameter and 0.562-inch center-to-cutting-edge measurement make this toolholder appropriate for small to mid-size bore work in steel, cast iron, and similar machinable alloys. It is a single-use configuration toolholder and is not designed as a multi-use or interchangeable modular system.

Key Features

• Left-hand E-SDUP toolholder style for internal boring applications
• Solid carbide construction for rigidity and vibration resistance in deep-bore conditions
• Through-coolant capability with a 0.281-inch coolant hole diameter for direct chip and heat management
• Accepts DP-series indexable inserts with 3/8-inch inscribed circle and 5/32-inch insert thickness
• Screw-clamp insert holding method for secure, repeatable positioning
• Neutral rake angle (0 degrees) and -3-degree lead angle for stable cutting geometry

Compatibility

Designed for use with DP-series (DP..) indexable inserts with a 3/8-inch inscribed circle and 5/32-inch thickness, as specified for the E-SDUP toolholder style.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the coolant supply is isolated before mounting or changing the toolholder or insert. The 3/4-inch shank should be clamped in a compatible boring bar holder or turret pocket to the depth recommended by the machine manufacturer. Verify coolant line connection and insert seating before resuming cutting operations.