Collis Tool 74423 Split Sleeve Tapping Driver MT4

Product Description

The COLLIS TOOL 74423 is a split sleeve tapping driver designed for use with a 1-1/8 inch tap in machine tool applications. It features an MT4 taper shank for direct mounting in milling machines, drill presses, and machining centers equipped with a Morse Taper 4 spindle. The driver accepts a tap shank diameter of 0.896 inches with a square drive of 0.672 inches, and provides a 3/8 inch projection. Tap entry depth measures 2-9/64 inches. The split sleeve design allows the tap to float and align with the pre-drilled hole, reducing the risk of tap breakage and thread damage during the tapping operation.

This tapping driver is suited for production and maintenance machining environments where consistent thread quality is required. It is used in applications that demand accurate thread formation in metal workpieces on vertical or horizontal machining equipment. The MT4 taper shank gives machinists a secure, repeatable connection to the spindle. Typical users include tool and die shops, maintenance machinists, and production machine operators working with larger tap sizes in the 1-1/8 inch range.

Key Features

• MT4 taper shank for direct spindle mounting in Morse Taper 4 machines
• Accepts 1-1/8 inch tap with 0.896 inch tap shank diameter
• Tap shank square of 0.672 inches for positive torque transfer
• 2-9/64 inch tap entry depth for proper thread engagement
• 3/8 inch projection keeps tap positioned accurately at the workpiece
• Split sleeve design helps prevent tap breakage by allowing float and alignment

Compatibility

Designed as an OEM-style replacement and standard fitment for MT4 taper shank spindles requiring a split sleeve tapping driver for 1-1/8 inch taps.

Installation Notes

Installation is performed by a machinist or toolroom technician. The machine spindle must be fully stopped and locked out before mounting or removing the taper shank driver. Clean the MT4 taper bore and shank surfaces before seating to ensure proper contact and prevent slippage. Follow the machine manufacturer guidelines and applicable shop safety procedures when setting up tapping operations.