Seco 75015057 Minimaster MM12 Milling Shank 5.91in Oal

Product Description

The SECO 75015057 is a Minimaster-series replaceable tip milling shank designed for modular milling tool assemblies used in precision machining operations. The shank features a conical shank shape with an 85-degree shank type and accepts MM12-style milling tips at the head. It measures 5.91 inches overall length with a 3.93-inch effective cutting length and a 1.93-inch head length. The neck diameter is 0.449 inches. This shank is installed by machinists and CNC tooling technicians in production and job-shop environments requiring fast, repeatable tip changes without removing the full toolholder from the spindle.

The 75015057 shank fits modular milling setups where quick tip replacement reduces downtime and maintains consistent tool reach. The MM12 toolholder style is suited for light-to-medium milling applications including profiling, slotting, and ramping in both horizontal and vertical machining center configurations. The replaceable tip design is common in aerospace, die-mold, and general metalworking shops where insert-style cutting heads are indexed or swapped at the machine without disturbing the full assembly.

Key Features

• MM12 toolholder and milling tip style for modular Minimaster-series compatibility
• 5.91-inch overall length with 3.93-inch effective length for extended reach applications
• Conical shank shape with 85-degree shank type for secure, rigid seating
• 0.449-inch neck diameter for clearance in tight-pocket milling operations
• No Weldon flat — smooth shank profile for standard collet or chuck retention
• Replaceable tip interface enables fast cutting head changes at the machine

Compatibility

Designed for use with MM12-style Minimaster-series replaceable milling tip heads. Consult the SECO Minimaster system documentation to confirm tip head and shank interface compatibility before ordering.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the tool is depressurized before handling. Clean the shank taper and tip seat mating surfaces thoroughly before assembly to ensure proper seating and runout performance. Follow the tool manufacturer torque guidelines for tip retention screws using the designated assembly wrench — do not use substitutes.