Accupro 12633404837 Boring Head MT4 Taper Shank

Product Description

The ACCUPRO 12633404837 is a taper shank boring head arbor designed to mount boring heads in machining center spindles using a Morse Taper 4 (MT4) shank interface. It uses a 1-1/2-18 threaded mount to accept compatible boring head bodies. This arbor is a standard interface component for precision boring operations on milling machines and manual mills equipped with MT4 spindles. Coolant-through capability is not supported on this unit. At 3.3 pounds, the assembly provides a solid, rigid connection between the spindle and boring head, which is critical for maintaining concentricity and dimensional accuracy during single-point boring passes.

This taper shank arbor is suited for manual milling machines and machining centers with MT4 spindle tapers. It is used in job shops, toolrooms, and production environments where precision bore sizing is required. The 1-1/2-18 threaded interface accepts boring head bodies with a matching threaded mount. Installation is performed by machinists and toolroom technicians as part of a boring head setup assembly. It is not intended for high-speed CNC spindle applications where retention-knob pull-stud systems are required.

Key Features

• MT4 Morse Taper shank for direct spindle mounting on compatible manual mills
• 1-1/2-18 threaded mount for secure boring head body attachment
• Solid, non-coolant-through construction for standard dry or flood-cooled boring
• 3.3-pound assembly weight provides rigid arbor-to-spindle connection
• Single-unit packaging suitable for individual toolroom and job shop procurement

Compatibility

Designed for use with boring head bodies featuring a 1-1/2-18 threaded mount, installed in machine spindles with an MT4 Morse Taper bore. Specific compatible model numbers were not provided in the product data.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Before mounting or removing the taper shank, power down the machine and lock out the spindle drive per OSHA lockout/tagout procedures. Clean the MT4 taper bore and shank mating surfaces thoroughly to remove chips, oil film, and burrs before seating, as surface contamination directly affects runout. Thread the boring head body onto the 1-1/2-18 mount and verify that all connections are fully seated and secure before commencing any boring operation.