Seco 75054599 Replaceable Tip Milling Shank Minimaster MM08

Product Description

The SECO 75054599 is a replaceable tip milling shank designed for the Minimaster MM08 tooling system. It features a straight keyway shank with a 0.5 inch shank diameter and a 20 mm (0.787 inch) head length projection. The overall assembly length is 2.56 inches, with a neck diameter of 0.39 inches. This shank accepts MM08-style milling tips and includes a Weldon flat for secure set-screw retention in the holder. It is installed by machinists and tooling technicians in CNC milling operations where quick-change tip replacement is required to minimize downtime.

This shank is suited for light to medium milling applications on CNC machining centers and manual mills. The Minimaster system is commonly used in operations that require frequent tip changes across varied materials, and the 20 mm projection length is appropriate for applications where reach beyond the holder face is needed without sacrificing rigidity. The 12.70 mm shank diameter and keyway configuration allow positive drive engagement in standard 1/2 inch toolholders.

Key Features

• MM08 Minimaster series replaceable tip interface for fast tip changes without removing the shank from the holder
• Weldon flat on shank provides positive set-screw drive and prevents rotation under cutting loads
• 0.5 inch (12.70 mm) straight keyway shank fits standard 1/2 inch collet chucks and end mill holders
• 20 mm head length projection with 0.699 inch effective cutting length
• 2.56 inch overall length suits typical CNC machining center clearances
• 0.39 inch neck diameter reduces interference during profiling and slotting passes

Compatibility

Designed for use with MM08-style Minimaster replaceable milling tips. The 1/2 inch straight shank with Weldon flat is compatible with standard 1/2 inch end mill holders and Weldon-style toolholders.

Installation Notes

Installation is performed by tooling technicians or machinists. Before mounting or removing the shank or tip, ensure the machine spindle is fully stopped and locked out per facility lockout/tagout procedures. Seat the shank fully into the toolholder and tighten the set screw against the Weldon flat to the toolholder manufacturer's specification. When seating the MM08 replaceable tip, follow the tip manufacturer's torque and seating procedure to ensure concentricity and secure clamping before initiating a cut.