Value Collection 375-5040 Boring Bar M35 Cobalt Right Hand

Product Description

The VALUE COLLECTION 375-5040 is a right-hand boring bar designed for precision internal boring operations on metalworking lathes and boring machines. Constructed from M35 cobalt high-speed steel, it offers increased heat and wear resistance compared to standard M2 HSS tooling, making it well suited for harder workpiece materials and interrupted cuts. The bar accepts a minimum bore diameter of 0.25 inches and reaches a maximum bore depth of 0.75 inches, with a 0.5 inch shank diameter and an overall length of 2.125 inches. It is sized for close-tolerance work on small-diameter bores where rigidity and edge retention are critical.

This boring bar is intended for use in manual and CNC lathe setups where small-bore internal turning is required. It fits standard tool holders and quick-change posts that accept a 0.5 inch shank. Typical applications include finishing and semi-finishing bores in steel, stainless steel, cast iron, and other ferrous materials. The M35 cobalt composition extends tool life in applications where carbon or alloy steels would accelerate tool wear. Machinists, toolroom operators, and general machine shop technicians are the primary users of this tooling.

Key Features

• M35 cobalt HSS construction for superior heat resistance and edge retention over standard HSS
• Minimum bore diameter of 0.25 inches for small-bore internal turning work
• Maximum bore depth of 0.75 inches suitable for shallow precision bores
• Right-hand cutting direction for standard lathe rotation setups
• 0.5 inch shank diameter fits common tool holders and quick-change posts
• Compact 2.125 inch overall length reduces overhang and maximizes rigidity

Compatibility

Designed for use in standard lathe tool holders and boring bar holders accepting a 0.5 inch shank diameter, suitable for manual and CNC lathes configured for right-hand internal boring operations.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Secure the shank firmly in the tool holder and verify that tool overhang is minimized to reduce chatter. Ensure the machine spindle is fully stopped and the machine is powered down before changing or indexing tooling. Follow the machine manufacturer guidelines for tool height alignment and feed rate selection appropriate to the workpiece material.