Value Collection 375-5052 Boring Bar M35 Cobalt

Product Description

The VALUE COLLECTION 375-5052 is a right-hand boring bar designed for precision internal diameter work on manual and CNC lathes and boring mills. Constructed from M35 cobalt high-speed steel, it delivers strong heat and wear resistance for machining harder materials and interrupted cuts. The bar accepts a minimum bore diameter of 0.3125 inches (5/16 inches) and reaches a maximum bore depth of 1.5625 inches (1-9/16 inches). The 1/2-inch shank diameter provides rigid tool post or holder seating. With an overall length of 2-15/16 inches, this compact bar suits smaller workpieces and tight setups. Machinists and tool room technicians use this bar for finish and semi-finish boring operations requiring close tolerances.

This boring bar is suited for light to medium internal turning and boring operations on lathes, jig borers, and machining centers. It is a practical choice for job shops, maintenance machine shops, and production environments where short-run or repair boring tasks require a reliable single-point tool. The right-hand cutting direction makes it compatible with conventional lathe rotation. It is intended for use in metal cutting applications on steel, cast iron, and similar ferrous materials where cobalt tooling provides an advantage over standard M2 high-speed steel.

Key Features

• M35 cobalt high-speed steel construction for improved heat resistance and tool life on harder materials
• Minimum bore diameter of 5/16 inches (0.3125 inches) for small-hole boring applications
• Maximum bore depth of 1-9/16 inches (1.5625 inches)
• 1/2-inch shank diameter for secure clamping in standard tool holders and boring bar blocks
• Right-hand cutting direction for conventional lathe rotation
• Compact 2-15/16 inch overall length for reduced overhang and improved rigidity in tight setups

Compatibility

Designed as a standard single-point boring bar for use with tool holders and boring bar blocks accepting a 1/2-inch shank diameter on manual and CNC lathes, jig borers, and machining centers.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines. Secure the shank firmly in the tool holder or boring bar block to minimize overhang and vibration before beginning any cut. Power down and lock out the machine spindle before mounting or removing the boring bar. Verify proper tool height alignment with the workpiece centerline prior to engaging the cut.