Accupro 12630101398 Boring Head 3 in Threaded Mount Manual

Product Description

The ACCUPRO 12630101398 is a manual offset boring head designed for precision single-point boring operations on milling machines and machining centers. With a 3 inch body diameter and a 3/4 inch boring bar hole diameter, this head accepts standard boring bars and provides the radial adjustment range needed for finishing bores to tight tolerances. The threaded mount uses a 1-1/2-18 thread interface, securing the head directly to a compatible arbor or spindle adapter. At 4.5 pounds, it is a solid, rigid unit suited for production and toolroom environments where repeatable bore sizing is required. Manual actuation means the operator adjusts the offset slide by hand between passes.

This boring head is used in metalworking shops performing internal diameter finishing on ferrous and non-ferrous workpieces. Typical applications include enlarging, truing, and finishing pre-drilled or rough-bored holes in fixtures, housings, plates, and other machined components. The offset head design allows the operator to dial in precise radial adjustments for achieving final bore diameter and surface finish. It is installed and operated by machinists and toolroom technicians working on vertical or horizontal milling equipment equipped with a compatible threaded spindle adapter.

Key Features

• 3 inch body diameter provides substantial radial range for a wide variety of bore sizes
• 3/4 inch boring bar hole diameter accepts standard boring bar shanks
• 1-1/2-18 threaded mount for direct attachment to a compatible arbor
• Manual actuation allows precise, controlled offset adjustment between passes
• Offset head type supports single-point boring for accurate diameter and finish control
• Overall length of 3-5/32 inches keeps the assembly compact for reduced overhang

Compatibility

Designed for use with milling machines and machining centers equipped with a 1-1/2-18 threaded spindle adapter or arbor. Compatible boring bars must have a 3/4 inch shank diameter.

Installation Notes

Installation and adjustment should be performed by a qualified machinist. Power down and lock out the machine spindle before mounting or removing the boring head or changing boring bars. Ensure the threaded arbor interface is clean and undamaged before threading on the head, and verify the boring bar set screw is fully tightened before taking any cut. Never adjust the offset slide while the spindle is in motion.