Description
The SECO 17011788 is a single-end, square-profile cobalt end mill designed for milling operations in demanding metalworking applications. Built from M42 cobalt high-speed steel, it delivers good wear resistance and toughness compared to standard HSS tooling. The cutter features a 0.75-inch diameter, a 2-inch length of cut, and a 0.75-inch straight shank, giving it a total overall length of 4.25 inches. Its 4-flute, spiral-flute geometry with a 30-degree helix angle promotes smooth chip evacuation and consistent surface finish. The bright uncoated finish keeps tooling costs low where coatings are not required. Licensed machinists and CNC programmers use this tool in vertical and horizontal milling operations across job shops and production environments.
This end mill is suited for slotting, profiling, and peripheral milling on ferrous and non-ferrous workpiece materials. Rated workpiece material categories include steel, stainless steel, cast iron, aluminum and non-ferrous alloys, and high-temperature alloys. The right-hand cut and right-hand flute configuration is compatible with standard CNC machining centers and manual milling machines. Centercutting capability allows plunge entry into the workpiece without pre-drilling, which adds flexibility to the machining process. The SPC408 series is a general-purpose cobalt offering appropriate for both prototype and production runs where tool life and dimensional accuracy matter.
Key Features
- M42 cobalt HSS construction for improved heat and wear resistance over standard HSS
- 4-flute spiral geometry with 30-degree helix for balanced chip evacuation and finish quality
- Centercutting design allows direct plunge entry without pre-drilled pilot hole
- Bright uncoated finish suitable for general-purpose milling without coating surcharge
- Right-hand cut and right-hand flute standard configuration for conventional CNC setups
- No chipbreaker, extended reach, or coolant-through features, keeping geometry straightforward for standard applications
Compatibility
Designed as a general-purpose replacement or production end mill compatible with standard 0.75-inch collet chucks, end mill holders, and hydraulic toolholders used in CNC machining centers and manual vertical mills. Part of the SECO SPC408 series.
Installation Notes
Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in an e-stop or locked-out state before seating or removing the tool from the holder. Verify proper runout (TIR maximum 0.0010 inches) after tool installation using a dial indicator before beginning the cut. Follow shop-standard feeds-and-speeds practice for the target workpiece material and consult the applicable cutting data for cobalt tooling when programming spindle speeds and feed rates.
Technical Specifications
- Mill Diameter: 0.75 inches
- Length of Cut: 2 inches
- Shank Diameter: 0.75 inches
- Overall Length: 4.25 inches
- Number of Flutes: 4
- End Mill Material: Cobalt (M42 HSS)
- Helix Angle: 30 degrees
- Flute Type: Spiral
- Cutting Direction: Right Hand
- Flute Direction: Right Hand
- Single or Double End: Single
- Centercutting: Yes
- Coating / Finish: Bright / Uncoated
- Mill Diameter Tolerance: +0.0010 / -0.0000 inches
- Shank Diameter Tolerance: -0.0001 / -0.0005 inches
- Overall Length Tolerance: +0.0620 / 0.0000 inches
- TIR Maximum: 0.0010 inches
- Primary Workpiece Materials: Steel, Stainless Steel, Cast Iron, Aluminum and Non-Ferrous, High-Temp Alloy
- Series: SPC408
- Weight: 1 pound
- UNSPSC Code: 27112803
Standard Information
- Brand: SECO
- Manufacturer Part Number: 17011788
