Accupro 12633404825 Boring Head MT3 Threaded Mount

Product Description

The ACCUPRO 12633404825 is a boring head taper shank adapter designed to mount boring heads in machine tool spindles using a Morse Taper 3 (MT3) interface. The shank connects via a 1-1/2-18 threaded mount, securing the boring head rigidly during cutting operations. This adapter is used in manual mills, knee mills, and similar machine tools where MT3 spindle tapers are standard. Installation and use are within the scope of machinist and toolroom technician workflows. Coolant-through capability is not supported on this unit.

This taper shank is suited for toolroom, job shop, and light production environments where boring operations are performed on milling machines or dedicated boring mills with MT3 spindles. The 1-1/2-18 threaded interface accommodates standard boring head bodies that use that thread specification. It is appropriate for both setup and production boring tasks where a rigid, repeatable connection between the spindle and boring head is required.

Key Features

• MT3 taper shank provides direct, self-holding fit in compatible machine spindles
• 1-1/2-18 threaded mount interfaces with standard boring head bodies
• No coolant-through passages — suited for dry or flood coolant applied externally
• Compact, single-piece adapter construction reduces setup stack height

Compatibility

Designed for use with boring heads that accept a 1-1/2-18 threaded shank connection, installed in machine tool spindles with an MT3 taper bore.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before seating or removing the taper shank. Ensure the MT3 taper and spindle bore are clean and free of chips or burrs before insertion to achieve full contact and prevent fretting. Use the appropriate drawbar or drift to properly seat or release the taper according to the machine manufacturer's guidelines.