Pilot-hole geometry joins CoroDrill 870 exchangeable tip drill range
Sandvik Coromant's -GP pilot-hole geometry allows CoroDrill 870 users to achieve improved centring when making pilot holes prior to deploying drills up to 8XD in length. Featuring optimised point angle and diameter tolerance, the design enables a smooth and secure drill entry into the pilot hole and generates excellent performance and hole quality. Available in grade GC4234 for both steel (ISO P) and cast iron (ISO K) applications, -GP geometries are stocked as standard for common sizes.
Sandvik Coromant is also introducing a Tailor Made 45° chamfer drill for producing chamfered holes in a single operation. Users have the option of one or two chamfer inserts.
As well as easy handling and secure tip changing, CoroDrill 870 benefits include long tool life and high penetration rates, while Chip evacuation is facilitated by optimised drill flute shape, size and helix angle.
