Hertel GG020064 Ball End Mill 1 in 4 Flute Hss Uncoated

Product Description

The HERTEL GG020064 is a single-end ball end mill designed for milling contoured surfaces, slots, and three-dimensional profiles in metal and other machinable materials. Built from M7 high speed steel with a 30-degree helix angle and four right-hand spiral flutes, it delivers consistent chip evacuation and surface finish on ferrous and non-ferrous workpieces. The 1-inch cutting diameter pairs with a 2-inch length of cut, giving machinists meaningful depth capacity for profiling and pocketing operations. At 4.5 inches overall length with a 1-inch straight shank, it mounts securely in standard end mill holders and collet chucks without extended-reach tooling.

This end mill is suited for manual mills and CNC machining centers in job shop, toolroom, and light production environments. It handles general-purpose profiling, contouring, and die work where a ball nose geometry is required. The uncoated M7 HSS construction makes it a practical choice for operators who resharpen tooling in-house, as HSS grinds more readily than carbide. Right-hand cutting direction is standard for conventional and climb milling on vertical and horizontal knee mills or CNC verticals.

Key Features

• 1-inch ball nose diameter for contouring, profiling, and 3D surface milling
• 2-inch length of cut provides depth capacity for pocketing and slotting
• 4 right-hand spiral flutes with 30-degree helix angle for efficient chip removal
• M7 high speed steel construction allows in-house resharpening
• Uncoated finish suits general-purpose ferrous and non-ferrous applications
• Single-end design with 1-inch straight shank fits standard end mill holders

Compatibility

Designed as a general-purpose single-end ball end mill with a 1-inch straight shank compatible with standard end mill holders, R8 collet chucks, and tool holders accepting a 1-inch shank diameter.

Installation Notes

Installation and tool changes should be performed with the machine spindle at a full stop and the control in an e-stop or locked-out state per applicable shop lockout-tagout procedures. Seat the shank fully in the holder and torque set screws or collet nuts to the holder specification. Verify runout with a dial indicator before initiating a cut. HSS end mills are sensitive to interrupted cuts and excessive feed per tooth — consult published speeds and feeds for M7 HSS at the given material and diameter before programming.