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The GUHRING 9031780063500 is a solid carbide square end mill designed for precision milling in demanding metalworking and machining applications. Part of GUHRING Series 3178, this single-end tool features a 6-flute spiral configuration with a 45-degree helix angle, delivering efficient chip evacuation and a smooth surface finish on ferrous and non-ferrous workpiece materials. The 0.25-inch cutting diameter pairs with a 0.75-inch length of cut and a 2.5-inch overall length, making it well suited for slotting, profiling, and peripheral milling operations where rigidity and dimensional accuracy are critical. Machinists and CNC operators install this tool in standard 0.25-inch collet or end mill holders.
This end mill is intended for use in vertical and horizontal CNC machining centers, manual knee mills, and similar machine tool setups where a right-hand cut, right-hand flute spiral geometry is required. The bright, uncoated finish suits general-purpose dry or flood-coolant machining. The 45-degree helix angle reduces cutting forces and vibration during light-to-medium passes. With a regular length type and no chipbreaker, this tool is optimized for finish and semi-finish milling rather than aggressive roughing passes.
Designed as an OEM-style replacement and standard tooling option for CNC machining centers and manual mills accepting a 0.25-inch straight shank end mill. Compatible with standard ER, TG, and DA collet systems sized for 0.25-inch shanks.
Installation should be performed by a qualified machinist or CNC setup technician with the machine spindle fully stopped and locked out per applicable lockout/tagout procedures. Seat the shank fully into the collet or end mill holder to the recommended minimum engagement depth before torquing the retention nut to the tool holder manufacturer's specification. Inspect the cutting edges for chips or damage before each use. Do not exceed the machine tool or tool holder manufacturer's rated RPM for this tool diameter.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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