Countersinksarja 6.3-20.5mm 4S

The RUKO Countersink Set 6.3–20.5mm 4S RUnaTec UltimateCut. This 6-piece set includes sizes Ø 6.3, 8.3, 10.4, 12.4, 16.5, and 20.5 mm and is delivered in a plastic case. Made of HSS RunaTEC DIN 335, 90°. The ULTIMATECUT 4S countersink is a highly efficient tool representing top-level performance. It is suitable for use with handheld drills, pillar drills, and CNC-controlled machining centers. The new ULTIMATECUT 4S countersink features asymmetric cutting edges, which are key to producing high-quality countersinks. This design ensures extremely smooth and quiet cutting without vibration marks, resulting in perfectly round holes. Cutting forces are distributed across four razor-sharp cutting edges, significantly reducing the axial and radial load on the countersink. This minimizes tool wear and extends tool life. This unique cutting feature also allows easy and efficient use of various sizes of countersinks when drilling holes up to Ø 40.0 mm with handheld drills—a diameter previously unattainable with manual drilling. The full set, from Ø 10.4 mm up to Ø 40.0 mm, can be used effectively with all types of drills. The high-performance RUKO coating – RUnaTEC – further extends the service life of the ULTIMATECUT 4S countersink, reduces tool wear, and enables machining of more challenging materials, including hardened steel. Asymmetric cutting edges guarantee smooth, friction-free results without vibration marks. By distributing the force across four cutting edges, axial and radial loads are greatly reduced. The 3-facet shank prevents spinning in the drill chuck for optimal power transfer, eliminating the need to re-tighten the drill chuck and making work easier. The RUKO nano Technology coating offers extremely high wear resistance, suitable for both standard and high-performance cutting tasks, prevents material adhesion, provides a perfectly smooth surface, and delivers exceptional nanohardness.