Product Overview
The CGS Tool 842-3125 is a 5/16" diameter 4-flute solid carbide ball end mill built specifically for long-reach profile and contour work, where the pocket sits deeper than a standard-length tool can comfortably get into. It belongs to the 842 Series, CGS Tool's extended-reach ball nose line, and it's aimed at jobs where you need a smooth rounded finish without stepping down to a smaller, shorter tool just to reach the feature.
What sets this tool apart is the combination of reach and control — a 1-3/4" length of cut on a 5/16" diameter is a lot of stick-out for a tool this size, and that's exactly where chatter usually creeps in. The .1562" radius keeps the cutting form smooth and consistent for blending and curved pocket work, while the 30° helix keeps chip evacuation steady even at that extended depth. Left uncoated, the 842-3125 holds up through mild steel, stainless, cast iron, titanium, non-ferrous material, plastics, and composites without needing special handling.
Tool Specifications:
- Diameter: 5/16"
- Shank: 5/16"
- Length of Cut (LOC): 1-3/4"
- Overall Length (OAL): 4"
- Flutes: 4 - Ball End
- Material: Solid Carbide
- Coating: Uncoated
- Radius: .1562"
- Series: CGS 842 Series
- Part No: 842-3125
Key Performance Features:
- 4-flute ball end design built for long-reach contour milling
- .1562" radius holds a smooth, consistent rounded profile
- Extended 1-3/4" LOC reaches deeper features without a shorter tool
- 30° helix keeps chip evacuation steady over the extra reach
- Handles finishing, blending, and deeper pocket work
- Rated for mild steel, stainless, cast iron, titanium, non-ferrous metals, plastics, and composites
