Accupro 126.33404861 Boring Head Threaded Mount 1 in Shank

Product Description

The ACCUPRO 126.33404861 is a straight-shank boring head designed for precision internal boring operations on milling machines and machining centers. It accepts a threaded mount with a 1-1/2-18 thread size and features a 1 inch straight shank diameter. This tool is used to enlarge or finish bored holes to tight dimensional tolerances. Machinists and toolroom operators install this type of boring head when close-tolerance hole sizing is required beyond what a standard drill or reamer can achieve. At 3.2 pounds, the unit is built for rigid, stable cutting in ferrous and non-ferrous workpieces.

This boring head is suited for use in production and job-shop environments where repeatable bore diameters are critical. The threaded mount interface allows the boring bar to be securely attached and adjusted for the desired cutting radius. It is appropriate for horizontal and vertical milling setups where a straight shank can be gripped directly in a collet chuck or end mill holder with a 1 inch bore. No coolant-through capability is included, so external coolant application or dry cutting should be planned accordingly.

Key Features

• Threaded mount size: 1-1/2-18 for secure boring bar attachment
• 1 inch straight shank diameter fits standard collet chucks and end mill holders
• No coolant-through design — plan for external or dry cutting application
• Compact and rigid construction at 3.2 pounds for stable cutting performance
• Single-piece package quantity — sold individually

Compatibility

Designed as a direct-fit boring head for milling machines and machining centers that accept a 1 inch straight shank toolholder and a 1-1/2-18 threaded boring bar mount.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully powered down and locked out before mounting or removing the boring head. The straight shank must be fully seated and clamped in the holder to the recommended engagement depth per the machine tool builder guidelines before cutting. Verify thread engagement on the boring bar mount is clean and fully made up before initiating any cut.