Seco 17011892 Square End Mill 1-1/2 in 6 Flute Cobalt SPC408

Product Description

The SECO 17011892 is a single-end, square-profile end mill ground from M42 cobalt high-speed steel for demanding milling operations. It runs a 1.5-inch cutting diameter with a 4-inch length of cut, delivering the extended reach needed for deep-pocket and slotting work. The 6-flute geometry with a 30-degree right-hand spiral helix provides a balance of chip evacuation and surface finish across a wide range of workpiece materials. The bright uncoated finish is standard for this cobalt grade. Licensed machinists and toolroom operators use this tool in manual and CNC knee mills, vertical machining centers, and similar setups where a large-diameter, long-reach end mill is required.

The 17011892 is designed for milling steel, stainless steel, cast iron, aluminum and non-ferrous metals, and high-temperature alloys. Its centercutting design allows direct plunge entry as well as conventional peripheral and slot milling. The 1.25-inch shank diameter seats in standard ER, R8, CAT, or BT toolholders with the appropriate collet or end mill holder. The 6.5-inch overall length suits setups requiring clearance over fixtures or tall workpiece features. This tool falls within the SECO SPC408 long-series end mill family.

Key Features

• M42 cobalt construction for elevated heat and wear resistance compared to standard HSS
• 6 flutes with 30-degree right-hand spiral helix for improved finish and feed capability
• 4-inch length of cut supports deep-pocket and long-reach milling without extended tooling adapters
• Centercutting geometry allows plunge, slot, and peripheral milling in a single tool
• Bright uncoated finish compatible with cutting fluids and straight-oil coolants across multiple materials
• No chipbreaker or variable helix — suited to conventional and CNC roughing and finishing passes

Compatibility

Designed as a long-series OEM-style end mill within the SECO SPC408 series. Compatible with milling operations on steel, stainless steel, cast iron, aluminum and non-ferrous metals, and high-temperature alloys per SECO workpiece material codes P, M, K, N, and S.

Installation Notes

A licensed machinist or toolroom technician should install this end mill in a properly sized end mill holder or collet chuck rated for the 1.25-inch shank diameter. Verify toolholder runout before cutting — the TIR maximum for this tool is 0.001 inches. Torque retention screws or collet nuts to the toolholder manufacturer specification. Confirm spindle speed and feed rate are calculated for the 1.5-inch cutting diameter before engaging the workpiece.