Drilling tools | CoroDrill® 862 CoroDrill® 862 Solid carbide and polycrystalline diamond (PCD) micro drills ideal for precision machining in small parts. Application — Achievable hole tolerance: ISO standard JS7 (± 6 micron), 9 × DC solid car- bide drills have hole tolerance H7 — Suitable for all materials — Diameter range 0.3–3 mm (0.0118–0.118 inch) — Use with CoroChuck® 930 high-precision chucks Features and benefits — ACM (Advanced Chip Management) flute geometry for small and managea- ble chips — Specially designed point geometry reduces thrust forces — Smooth drill surface enables fast and efficient chip evacuation — Tailor Made® options and advanced engineered tools offer extensive oppor- tunities to optimize your tooling ISO application areas 862 with -GM geometry 862 with -GM geometry 862 with -GM geometry (9×DC) (3, 6, 9×DC) (12–16×DC) — Grade X2BL with TiAlSiN coat- — Grade X2BM with AlTiCrN — Grade X2BL with AlTiCrN ing provides heat resistance, coating provides heat resist- coating provides heat resist- improved productivity and ance, improved productivity and ance, improved productivity and consistent tool life consistent tool life consistent tool life — External coolant — Through coolant for temperature — Through coolant for temperature control and chip evacuation control and chip evacuation 862 with -GM geometry 862 PCD with -GM geometry (20–80×DC) (5–12×DC) — Grade X1CC with AlCrN coating — Grade X1DU with vein PCD — Deep hole micro drills — Longer tool life than solid car- — External coolant bide — Excellent for cutting difficult materials such as platinum and green ceramics — External coolant 421