Value Collection 220-1542 Boring Head Taper Shank MT4

Product Description

The VALUE COLLECTION 220-1542 is a boring head taper shank adapter designed to mount boring heads in machine tool spindles using a Morse Taper 4 (MT4) shank. The threaded mount interface measures 7/8-20, allowing direct attachment to compatible boring heads without additional adapters. This type of shank is used in manual and CNC mills, drill presses, and boring mills where MT4 spindle tooling is standard. Machinists and tool room operators install this component as part of a boring head assembly to achieve precise hole enlargement and diameter finishing on ferrous and non-ferrous workpieces. Coolant-through capability is not supported on this shank.

This taper shank is suited for manual machining centers, knee mills, and radial arm drill presses equipped with MT4 spindle tapers. It is typically used in job shop, maintenance, and production environments where boring head setups require a rigid, repeatable spindle interface. The 7/8-20 threaded mount is a common standard thread for boring head bodies, making this shank a practical replacement or additional holder for existing tooling setups.

Key Features

• MT4 taper shank for direct fit in Morse Taper 4 spindles
• 7/8-20 threaded mount for secure boring head attachment
• No coolant-through passages, simplifying setup and maintenance
• Weighs 1.48 pounds, indicating solid steel construction suitable for rigid boring applications
• Single-piece shank design provides consistent taper-to-thread alignment

Compatibility

Designed as a standard replacement or additional taper shank for boring head assemblies requiring an MT4 spindle interface and a 7/8-20 threaded mount connection. Verify spindle taper size and boring head thread spec before installation.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before inserting or removing the taper shank. Clean both the MT4 spindle bore and the shank taper surfaces thoroughly to remove chips, oil film, and debris before seating, as surface contamination will affect taper grip and runout. Use a draw bar where the spindle design requires it to secure the taper against axial pull-out during cutting.