Kennametal 1256313 Boring Bar Solid Carbide Right Hand

Product Description

The KENNAMETAL 1256313 is a solid carbide boring bar designed for precision internal turning and bore finishing operations. With a minimum bore diameter of 0.0620 inches and a maximum bore depth of 0.1870 inches, this bar is built for tight-tolerance small-bore work in CNC lathes and manual turning centers. The 3.95 mm shank diameter provides a compact, rigid setup for accessing small-diameter bores. The uncoated solid carbide construction delivers consistent cutting performance in a range of workpiece materials. Machinists and tool-and-die professionals rely on this style of bar for high-precision finishing passes where dimensional accuracy is critical.

This boring bar is suited for small-bore internal machining applications in production and job-shop environments. The right-hand cut orientation makes it compatible with standard spindle rotation on conventional CNC turning setups. Its compact geometry is well suited for watchmaking components, medical device parts, hydraulic fittings, and other precision small-diameter bores where clearance is limited and surface finish requirements are tight.

Key Features

• Minimum bore diameter of 0.0620 inches for small-bore access
• Maximum bore depth of 0.1870 inches for shallow to moderate reach
• Solid carbide construction for rigidity and wear resistance
• Uncoated grade suitable for a broad range of workpiece materials
• Right-hand cut orientation for standard CNC lathe setups
• 3.95 mm shank diameter for compact tool holding

Compatibility

Designed as an OEM-style replacement or direct-fit boring bar for CNC lathes and turning centers equipped with tooling systems accepting a 3.95 mm shank diameter in right-hand boring bar configurations.

Installation Notes

Installation should be performed by a qualified machinist with the machine powered down and in a locked-out state before tooling changes. Ensure the shank is properly seated and clamped in the tool holder to the tool holder manufacturer's specified clamping torque. Confirm bore diameter and depth clearances against the workpiece setup before initiating a cutting pass. Follow applicable shop safety protocols and machine manufacturer guidelines during tool changes.