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The VALUE COLLECTION SCB .312 is a solid carbide boring bar designed for precision internal boring operations on metalworking lathes and CNC turning centers. With a minimum bore diameter of 0.3 inches and a maximum bore depth of 0.96 inches, this bar handles tight-bore applications where rigidity and cutting edge integrity are critical. The solid carbide construction resists deflection and maintains dimensional accuracy through the cut. A 1/4-inch shank diameter keeps the tool compact for small-bore work, and the 2.5-inch overall length suits standard toolpost and boring head setups. Machinists and tool-and-die technicians are the primary users of this type of tooling.
This boring bar is suited for small-diameter internal turning work in job shop, production, and toolroom environments. It is typically used when boring holes to precise diameter tolerances in ferrous and non-ferrous materials. The solid carbide grade SCB-312 designation is appropriate for applications demanding a stiffer tool body than high-speed steel alternatives, particularly in shorter-reach, small-bore scenarios where chatter control is a priority. Each unit is packaged individually.
Designed as an OEM-style replacement or direct-use boring bar for lathes and CNC turning centers equipped with toolholders accepting a 1/4-inch shank diameter.
Installation and tool changes must be performed with the machine powered off and spindle fully stopped. Secure the 1/4-inch shank firmly in the toolholder or boring head to the manufacturer-specified clamping method before operation. Verify tool overhang is minimized to the extent the bore depth allows, as excess overhang increases deflection risk. Follow your machine tool manufacturer guidelines and applicable shop safety procedures when setting cutting parameters.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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