Description

The SECO 03007654 is a solid carbide corner radius end mill designed for high-performance material removal in demanding machining applications. With a 0.625 inch mill diameter, 1.625 inch length of cut, and a 0.0300 inch corner radius, this tool is built to handle both roughing and finishing operations in a single setup. The six-flute, right-hand spiral geometry paired with an AlTiN PVD coating delivers heat resistance and extended tool life at elevated cutting speeds. A 38-degree medium helix angle promotes efficient chip evacuation while maintaining edge stability across a wide range of workpiece materials. Machinists and CNC operators working in job shop and production environments rely on this geometry for consistent dimensional output.

This end mill is suited for milling steel, stainless steel, cast iron, superalloys, and titanium. The S638R series stub-length design provides added rigidity, making it a practical choice for side milling, slotting, and profile work where chatter control matters. The centercutting configuration allows plunge entry when required. It is intended for use in standard straight-cylindrical toolholders and collet chucks in vertical and horizontal machining centers. Close pitch flute spacing supports stable cutting in tougher alloys and interrupted cuts.

Key Features

Solid carbide micrograin substrate for hardness and wear resistance in ferrous and exotic alloys
AlTiN PVD coating rated for high-heat cutting in steel, stainless, cast iron, superalloys, and titanium
Six flutes with close pitch for smooth surface finish and reduced cycle time
0.0300 inch corner radius reduces stress concentration at the cutting edge and improves part edge quality
Centercutting design enables direct plunge entry without a pre-drilled pilot hole
Right-hand cut, right-hand flute spiral with 38-degree medium helix for controlled chip flow
Stub length construction increases rigidity and minimizes deflection in tight setups

Compatibility

Designed for use in straight-cylindrical toolholders and collet chucks. Suitable for machining steel, stainless steel, cast iron, superalloys, and titanium workpieces in CNC milling applications.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the tool changer is disabled before mounting or removing the end mill. Seat the 0.625 inch straight shank fully into the toolholder collet to the recommended gauge line and torque the collet nut per the toolholder manufacturer specification. Verify runout against the stated TIR maximum of 0.0005 inches before beginning the cutting operation.

Technical Specifications

Mill Diameter: 0.6250 inches
Number of Flutes: 6
Length of Cut: 1.6250 inches
Corner Radius: 0.0300 inches
Overall Length: 3.5000 inches
Shank Diameter: 0.6250 inches
Helix Angle: 38 degrees
End Mill Material: Solid Carbide Micrograin
Coating: AlTiN (PVD)
Cutting Direction: Right Hand
Flute Direction: Right Hand Spiral
Shank Type: Straight Cylindrical
End Type: Corner Radius
Length Type: Stub
Material Removal Type: Roughing and Finishing
Primary Workpiece Material: Steel, Stainless Steel, Cast Iron, Superalloys, Titanium
Centercutting: Yes
Coolant Through: No
Pitch: Close
TIR Maximum: 0.0005 inches
Corner Radius Tolerance: +0.00100 to -0.00100 inches
Mill Diameter Tolerance: -0.0020 to 0.0000 inches
Shank Diameter Tolerance: -0.0001 to -0.0004 inches
Overall Length Tolerance: -0.0600 to +0.0600 inches
Series: S638R
Package Weight: 0.52 pounds
Package Dimensions: 5.5 x 1.1 x 1.1 inches
UNSPSC Code: 27112803