Seco 75015055 Milling Shank 3/4 Inch Minimaster MM12

Product Description

The SECO 75015055 is a replaceable tip milling shank from the Minimaster series, designed to accept MM12-style interchangeable cutting heads for modular milling operations. The shank features a 90-degree configuration with a straight 3/4-inch diameter body and a T08 neck thread for secure tip engagement. Overall length is 3.15 inches, with an effective cutting length of 1.10 inches. A Weldon flat is machined into the shank for positive drive retention in the toolholder. This shank is installed and serviced by machinists and toolroom professionals in CNC milling applications requiring quick tip changes without disturbing the setup.

The 75015055 is suited for use in vertical and horizontal milling centers where the Minimaster MM12 modular system is in use. The 90-degree shank geometry allows direct mounting into standard collet chucks and milling toolholders that accept 3/4-inch straight shanks with a Weldon flat. The T08 neck thread interfaces with the full range of compatible MM12 replaceable milling tips, making this shank a practical platform for both roughing and finishing operations in production and job-shop environments.

Key Features

• Minimaster MM12 toolholder style accepts a wide range of interchangeable milling tip heads
• T08 neck thread provides secure, repeatable tip seating
• Weldon flat machined into shank for positive anti-rotation drive
• 3/4-inch straight shank diameter fits standard collet chucks and milling holders
• Neck diameter of 0.449 inches supports reach into moderate-depth features
• Effective length of 1.10 inches balances rigidity with usable projection

Compatibility

Designed for use with the SECO Minimaster MM12 modular milling system, accepting MM12-style replaceable milling tips secured via T08 neck thread. Compatible with toolholders accepting a 3/4-inch straight shank with Weldon flat.

Installation Notes

Installation is performed by qualified machinists following standard CNC toolsetting procedures. Ensure the machine spindle is fully stopped and the toolholder is removed from the spindle before changing tips or mounting the shank. Use the appropriate T08 torque key or wrench to seat the replaceable tip per the Minimaster system procedure — do not use substitutes. Verify Weldon flat engagement with the toolholder setscrew before returning the assembly to service.