Accupro ACC-HB2401750 Helical Boring Bar Solid Carbide

Product Description

The ACCUPRO ACC-HB2401750 is a helical boring bar machined from submicron solid carbide, designed for internal boring operations requiring tight tolerances and a right-hand cutting direction. With a minimum bore diameter of 0.24 inches and a maximum bore depth of 1.75 inches, this bar handles small-diameter, moderate-depth bores where rigidity and edge retention are critical. The bright finish coating reduces friction and aids chip flow. At 3 inches overall length with a 1/4-inch shank diameter, it fits standard toolholders used on CNC lathes and machining centers. Machinists and tool-and-die professionals specify submicron carbide grade for high-speed steel replacement and improved surface finish on ferrous and non-ferrous materials.

This boring bar suits precision internal machining in job shop, production, and tool-room environments. It is appropriate for small-bore applications on CNC turning centers and vertical machining centers where a 1/4-inch shank is compatible with the toolholding system. Typical applications include finishing bores in aluminum, cast iron, steel, and similar machinable alloys where close diameter control is required. The helical flute geometry supports improved chip evacuation compared to straight-flute configurations, making it well suited for blind and through-bore finishing passes.

Key Features

• Submicron solid carbide construction for superior hardness and wear resistance
• Minimum bore diameter of 0.24 inches for small-diameter internal work
• Maximum bore depth of 1.75 inches supports moderate-depth blind and through bores
• Right-hand cutting direction for standard spindle rotation setups
• Bright finish coating reduces friction and promotes chip flow
• 1/4-inch shank diameter fits common small-bore toolholders

Compatibility

Designed as a direct-fit replacement or addition for any toolholding system accepting a 1/4-inch shank boring bar on CNC lathes and machining centers.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the machine spindle is fully stopped and locked out before securing or removing the boring bar from the toolholder. Use a calibrated torque wrench on setscrews to avoid shank damage; consult the toolholder manufacturer for clamping specifications. Confirm runout with a dial indicator before beginning a production pass.