Seco 03083977 Ball End Mill 3mm 4 Flute Carbide Altin

Product Description

The SECO 03083977 is a solid carbide ball end mill from the STB440M.2 series, designed for demanding material removal in roughing and finishing operations. With a 3.00 mm cutting diameter and a 1.50 mm nose radius, it produces precise ball-end profiles in tight tolerances. The four-flute, variable-helix geometry paired with an AlTiN PVD coating gives this tool strong thermal resistance and edge stability when cutting stainless steel, high-temperature alloys, and hardened materials. It is a single-end, right-hand cut, right-hand flute tool with a 40-degree nominal helix angle. Licensed machinists and CNC operators in precision machining shops are the primary users of this tool.

This end mill is suited for small-diameter work in aerospace, medical, die and mold, and other high-tolerance applications where stainless steel, high-temp alloys, and hardened workpieces are common. The 6.00 mm length of cut, 9.70 mm reach length, and 3.00 mm neck diameter allow access to features with moderate depth. The 6.00 mm straight-cylindrical shank seats in standard ER or shrink-fit collets. The 58.00 mm overall length suits typical vertical machining center and CNC router setups. No coolant-through capability is present, so flood or mist cooling at the spindle is the recommended approach for heat management.

Key Features

• Solid micrograin carbide substrate for rigidity and wear resistance in hard and abrasive materials
• AlTiN PVD coating provides high-temperature oxidation resistance, supporting dry or semi-dry cutting in stainless and hardened steels
• Variable helix angle reduces harmonic chatter during high-speed finishing passes
• Four-flute, center-cutting design allows plunge entry and full slot milling
• 3.00 mm neck diameter with 3.70 mm neck length provides clearance for near-wall and deep-feature access
• Right-hand cut and right-hand flute geometry compatible with standard CNC spindle rotation

Compatibility

Designed as an OEM-style replacement or direct-specification solid carbide ball end mill for CNC machining applications requiring a 3.00 mm diameter, 6.00 mm shank tool in the SECO STB440M.2 series. Primary workpiece material codes M, S, and H correspond to stainless steel, high-temperature alloys, and hardened materials respectively.

Installation Notes

Installation and tool changes must be performed by a qualified machinist with the spindle fully stopped and machine in a safe state per shop lockout procedures. Seat the 6.00 mm straight-cylindrical shank in a properly sized collet or shrink-fit holder, torqued to the holder manufacturer specification. Verify runout at the tool tip does not exceed the 0.0005-inch TIR maximum before cutting. Because this tool has no coolant-through channels, direct flood or mist cooling at the cutting zone is recommended to manage chip evacuation and heat buildup.