960 Series

Tool 960i2403C

The 960i2403C is a 3/8", 270° spherical cutter from the 960 Series, for undercut pockets and spherical retention features in aluminum. This version has 4 flutes.

The 270° ball wraps 45° past its equator, so you can cut a spherical undercut from above.
Sonic grinds the radius form to 0.0003" accuracy.
The teeth cut to center, so you can blend the bottom of the cut.
You clamp a 3/8" shank that Sonic grinds to h6 for precision tool holders and leaves unpolished to help it resist slipping.
TiB2 resists aluminum sticking to the edge, so you can run higher speeds and feeds than with an uncoated tool.
For steel, the 960i2403B is the same tool in AlTiN.