Kennametal 1094909 Indexable Boring Bar 3/4 in Shank

Product Description

The KENNAMETAL 1094909 is a steel indexable boring bar designed for internal turning and boring operations on CNC lathes and manual turning centers. Built to the A-CTLP toolholder style, it accepts TP-series clamp-style inserts and delivers a positive rake angle of 5 degrees, reducing cutting forces and heat generation during light-to-medium bore finishing passes. The 3/4-inch shank diameter and 10-inch overall length suit a wide range of lathe toolpost and turret configurations. A coolant-through design with a 1/8-27 NPT coolant hole thread supports directed coolant delivery at the cutting edge for improved chip evacuation and tool life in ferrous and non-ferrous boring applications. Licensed HVAC techs, plumbers, and electricians should note this is a machining tool installed by qualified machinists and toolroom personnel.

The 1094909 is suited for production and job-shop boring operations where a left-hand cut orientation is required. With a minimum bore diameter of 0.930 inches (23.62 mm), it handles smaller-diameter bores while maintaining rigidity through the steel shank. The Kendex series design is commonly used in automotive, aerospace, and general metalworking applications. The clamp insert-holding method allows fast insert indexing without removing the bar from the turret, minimizing downtime during high-volume runs.

Key Features

• Minimum bore diameter of 0.930 inches (23.62 mm) for tight internal turning clearance
• Left-hand cut orientation for climb-boring and specific turret configurations
• Positive rake angle (5 degrees) reduces cutting forces and improves chip flow
• Coolant-through design with 1/8-27 NPT thread for directed coolant at the cutting zone
• Clamp-style insert retention for quick indexing of TP-series inserts
• Steel construction provides strength and rigidity across the 10-inch overall length

Compatibility

Designed to accept TP-series (TP..) indexable inserts with a 3/8-inch inscribed circle and 1/8-inch insert thickness, using a clamp insert-holding method. Part of the Kennametal Kendex series toolholder family.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before mounting or removing the boring bar from the turret or toolpost. Verify shank-diameter compatibility with the machine tool holder bore before installation. Follow the machine tool manufacturer torque specifications for toolpost fasteners and confirm insert seating before taking a cut.