Seco 17013189 Corner Chamfer End Mill 1-1/4in 4 Flute Cobalt

Product Description

The SECO 17013189 is a corner chamfer end mill from the VFP635 series, designed for aggressive material removal in stainless steel, superalloys, and titanium. Built from M42 cobalt high-speed steel, it runs a 1.25-inch diameter with a 4-flute, right-hand helical configuration and a 45-degree chamfer angle with a 0.0400-inch chamfer width. The super-close pitch and centercutting geometry make it effective for slotting, shouldering, rampdown, helical interpolation, plunging, recessing, and drill-mill operations. Bright/uncoated finish is retained to maximize toughness in demanding cuts. This is a long-reach, single-end tool intended for use by machinists and tooling professionals in production and job-shop environments.

This end mill is suited for milling operations in materials classified under ISO M and S designations, specifically stainless steel, superalloys, and titanium. The Weldon flat shank provides positive drive and reduces slippage under heavy radial loads. With a 4-inch length of cut and 6.5-inch overall length, it handles deep pocket work and extended-reach applications where shorter tools cannot reach. The VFP635 series targets high-performance roughing in difficult-to-machine materials typical in aerospace, medical, and energy sector components.

Key Features

• M42 cobalt construction for increased heat and wear resistance in hard-to-machine alloys
• 45-degree chamfer angle with 0.0400-inch chamfer width for consistent edge prep and chamfering
• Super-close pitch, 4-flute layout optimized for roughing in stainless steel, superalloys, and titanium
• Centercutting design enables plunging and drill-mill operations without a pre-drilled entry hole
• Weldon flat shank provides positive tool drive and resists pullout under heavy cutting loads
• Supports shouldering, slotting, rampdown, helical interpolation, plunging, and recessing operations

Compatibility

Designed for use in CNC milling machines and machining centers with toolholders accepting a 1.25-inch Weldon flat shank. Primary workpiece materials are stainless steel, superalloys, and titanium (ISO material codes M and S).

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Secure the Weldon flat shank in a compatible end mill holder or set-screw toolholder, ensuring the flat is fully engaged with the set screw before tightening. Verify spindle speed and feed rate parameters are appropriate for the workpiece material and depth of cut before beginning operation. Never exceed the rated cutting diameter or length of cut specified for the tool.