Threading Technology – Clamping Technology 520

145 Machine Taps UNC UNF UNEF UN-8 M MF NPSF Rp (BSPP) G NPT NPTF Rc (BSPT) STI SELF-LOCK Accessories NPSM/NPSC Tech. Info v c Product Finder 1.5 Basic types of our EMUGE taps Robust 2X VA • Provided with a hollow face • Chamfer form C (2-3 threads) • For blind hole and through hole threads Note: The special crown-shaped front portion of this tool provides excellent accuracy even in the first stage of the cutting process. Extra clean and accurate threads can be cut in this way. The swarf is collected in the hollow face of the tap (internal chip collector) when cutting blind hole threads. For this tool, we recommend using paste lubrication wherever possible. Please make sure to cover not only the tool but also the walls of the hole with paste! Oil lubrication is possible only in vertical machining, if the blind hole can be completely filled with oil. 1.6 Our EMUGE geometries Rekord A Rekord B Rekord D Enorm For steel materials Geometry with very good proper guidance for true-to-gauge thread cutting on all machines. Available ex stock in many thread systems and sizes. By combination with hard surface coatings, cutting data and tool life increases can be achieved. • Rekord B-STEEL-L For low strength steels Rekord B Enorm For stainless steel materials and steel materials With tough and long-chipping materials, the chips must be transported in an axial direction in order to avoid chip jams. An increased profile relief angle reduces friction and with it, the danger of cold welding. Rekord A For cast iron Since cast iron is a very abrasive material, these taps are always provided with a surface treatment in addition to a low rake angle. In general, straight flutes are sufficient for such short-chipping materials. Rekord A For cast iron with vermicular graphite Newly developed cast materials often show very special grain structures. In combination with an increased number of flutes and a specially adjusted geometry, these tools permit long tool life even in these highly abrasive materials as well as in normal cast iron. Rekord B Enorm For aluminum wrought alloys In the machining of long-chipping aluminum, it is absolutely necessary to provide chip transport in an axial direction. In addition to the large rake angle, these tools are made with a reduced number of flutes so that there is even more room for the swarf. This helps to avoid clogging of the flutes. Rekord A Rekord D For aluminum cast alloys In order to achieve a long tool life in this highly abrasive material, all the tools are provided with a hard surface coating. Internal coolant supply also is very helpful.