Scientific Cutting Tools ACBC312F5R Indexable Boring Bar

Product Description

The SCIENTIFIC CUTTING TOOLS ACBC312F5R is a right-hand indexable boring bar designed for precision internal boring operations on non-ferrous metals. The shank is constructed from solid carbide for rigidity and vibration resistance, while the head is steel. It accepts ACD5 series diamond inserts secured by a screw-clamp holding method. Key dimensions include a 0.35-inch minimum bore diameter, a 5/16-inch shank diameter, and a 4-inch overall length. With a 5-degree lead angle and a center-to-cutting-edge distance of 0.179 inches, this bar suits tight-tolerance finish boring applications on CNC lathes and boring mills.

This boring bar is suited for shops and production environments running non-ferrous workpiece materials such as aluminum, brass, and copper alloys. The ACBC toolholder style is a compact, small-bore configuration intended for applications where minimum bore diameter is a critical constraint. The screw-clamp insert system provides repeatable insert indexing without the need for special tooling. Insert is not included and must be sourced separately using the ACD5 insert series with a 0.156-inch inscribed circle and 0.040-inch thickness.

Key Features

• Solid carbide shank provides stiffness and chatter reduction in small-bore applications
• Steel head construction balances durability with machinability
• Accepts ACD5 series diamond inserts for versatile cutting geometry options
• Screw-clamp insert holding method allows fast, repeatable indexing
• 5-degree lead angle suited for finish boring passes on non-ferrous materials
• Compact design achieves a 0.35-inch minimum bore diameter

Compatibility

Compatible with ACD5 series diamond inserts with a 0.156-inch inscribed circle and a 0.040-inch compatible insert thickness. Insert is not included with purchase.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before changing or indexing inserts. Secure the shank in the tool holder to the machine manufacturer's specified clamping requirements. Verify minimum bore diameter clearance before beginning a cut to prevent interference between the bar body and the workpiece bore wall.