Seco 17013186 Corner Chamfer End Mill 1-1/4 in 4 Flute

Product Description

The SECO 17013186 is a corner chamfer end mill designed for demanding material removal in stainless steel, superalloys, and titanium. Built from M42 cobalt high-speed steel and finished bright/uncoated, it measures 1.25 inches in diameter with a 3-inch length of cut and 5.5-inch overall length. The 4-flute, right-hand helical configuration with a super-close pitch delivers smooth chip evacuation and stable cutting. A 0.040-inch chamfer width at 45 degrees adds a consistent edge break without requiring a secondary operation. This tool is center-cutting and supports a broad range of machining strategies, making it a practical choice for machinists and tool-and-die professionals working with hard and exotic alloys.

This end mill is suited for milling operations in job shops, aerospace component shops, and precision manufacturing environments where stainless steel and superalloy workpieces are common. Rated applications include shouldering, slotting, ramp-down milling, helical interpolation, drill milling, and plunging and recessing. The Weldon flat shank provides positive drive engagement in standard end mill holders, reducing pullout risk during aggressive cuts. It is sold as a single-end tool in the VFP635 series.

Key Features

• M42 cobalt construction for high heat resistance in stainless steel and superalloy cutting
• 0.040-inch chamfer width at 45 degrees for consistent edge breaking in one pass
• Center-cutting geometry supports plunging, ramp-down, and helical interpolation
• Super-close pitch with medium helix reduces chatter on hard materials
• Weldon flat shank provides positive drive and minimizes tool pullout
• Bright/uncoated finish — no coating to spall or delaminate in interrupted cuts

Compatibility

Designed for use in standard 1-1/4-inch end mill holders or Weldon-style collet chucks. Primary workpiece materials are stainless steel, superalloys, and titanium (ISO material codes M and S). Part of the SECO VFP635 series; manufacturers catalog number VFP435-1.250-D3-C040.3-Z4.

Installation Notes

Installation is performed by a machinist or toolroom technician using a standard end mill holder torqued against the Weldon flat per machine-tool manufacturer specifications. Confirm spindle speed and feed rate are appropriate for M42 cobalt tooling before engaging the cut. Inspect the holder bore and setscrew condition before mounting to prevent runout. Do not exceed the rated length of cut when slotting, as excessive axial depth can deflect the shank and damage the tool or workpiece.