• Stitch Overseas Private Limited

Indexable Centre Drill

Stitch Overseas Private Limited offers a range of systems for Manufacturing Technology sourced from Nine9 Cutting Tools Company Limited, Taiwan. The company has developed the world’s first Indexable Centre Drill “i- Center” (new replaceable super-hard chip) with high-efficiency which not only promotes cost reduction but also improves production. The most significant feature of this tool is that indexable insert can be replaced when the holder of a machine is installed well. The holder is made of high alloy steel (40 ±2 HRC) and the internal coolant channel is drilled to be compatible with a machine having an internal coolant supply. This supports higher cutting speeds and extended tool life of i-Center Indexable Insert. The i-Center holder can be clamped by side lock holder on machining centre, CNC lathe as well as special purpose machines. The indexable insert is NC2032, a carbide grade of K20F and is TiAlN coated. The form of i-Center insert is ground as the “HSS” or “Solid Carbide Centre Drill”. The feature of the i-Center insert is the assembly structure by using central screw and the two-fixed pins on both sides to precisely locate position of indexable insert. Based on this structure the repeatability precision for centre hole diameter and angle can be ±0.02 mm in radial direction and ±0.05 mm in axial direction. In order to promote high-efficiency, the revolutionary “i-Center” has been designed for drilling centre hole on the end of shaft. Whether it is a dead centre or a live centre, it is an indispensable and auxiliary tool for centre hole processing especially for gear shafts, crankshafts, camshafts, etc., besides other long shaft work pieces. In addition, there are cylindrical grinders, gear hobbing machines, gear grinders, screw milling machines, screw grinders and other special purpose machines etc., which are widely using this as auxiliary tool for processing certain applications. On production process, the centre drill finds its application in gear motors, bearing spindles, speed reducers, cooling fans, universal joints and so many other items.