Sandviks 327R12‑28 40002‑GMM CoroMill 327 Solid Carbide Grooving Milling Head, 4mm Groove Width for CNC Groove Milling Steel Stainless Steel Cast Iron

The 327R12‑28 40002‑GMM 1025 is Sandviks Coromant CoroMill®327 series right‑hand solid carbide grooving milling head. Designed for multi‑purpose grooving, circlip‑slot milling and chamfering on machining centers and lathe rotating units. It features 6 precision‑ground usable cutting edges, delivering high productivity and consistent groove dimension accuracy for batch‑production metal‑cutting jobs.

• 6 indexable cutting edges, improve tool economy and reduce tool‑change downtime
• GMM medium‑feed chip‑breaker geometry, optimized chip evacuation, less built‑up‑edge risk
• CVD coated grade 1025 solid carbide substrate, balanced wear resistance and edge toughness
• 4 mm groove width, R0.2 mm corner radius, max cutting depth 6.5 mm
• High‑precision ground profile, produce burr‑free high‑quality groove surface
• Perfectly compatible with CoroMill 327 size‑12 tool holders, secure mechanical clamping

• Carbon steel, alloy steel (P materials)
• Stainless steel (M materials)
• Cast iron (K materials)
• Selected heat‑resistant superalloys

• Circlip groove, O‑ring slot milling on CNC machining centers
• Component chamfering, light slot‑milling operations
• Mass‑production mechanical parts, gear‑box housing machining
• Semi‑finish grooving for steel, stainless steel and cast‑iron workpieces