Threading Technology – Clamping Technology 520

149 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 1.10 Cooling and lubrication agents Lubricants are often, if not generally, given too little consideration. If you want to get the best performance out of your tool you have to take care to use the best coolant-lubricant available. In general, we distinguish the following types of cooling and lubrication: A Dry machining, pressurized air, cold pressurized air “Real” dry machining is mostly used only in cast iron. Pressurized air, sometimes cooled, is used in some cases for chip removal. E M Emulsion The most common type of coolant-lubricant on machining centres. Minimum-quantity lubrication (MQL) Due to the more and more common option of supplying aerosol through the spindle on modern machining centres, this type of cooling and lubrication is gaining more and more popularity. O P Thread cutting oil With these oils which are perfectly adjusted to specific materials, excellent thread surfaces and tool life can be achieved. Thread cutting paste Perfectly suitable for the cold forming of threads. Especially useful in horizontal machining, with large thread sizes and through hole threads. To be used only for brush lubrication. 1.9 Chamfer forms Chamfer forms and chamfer lengths for taps acc. DIN 2197. Form A Form B Chamfer length 6-8 threads For straight flutes Chamfer length 3.5-5.5 threads For straight flutes with spiral point Form C Form D Chamfer length 2-3 threads For straight or spiral flutes Chamfer length 3.5-5 threads For straight or spiral flutes Form E Form F Chamfer length 1.5-2 threads For straight or spiral flutes Chamfer length 1-1.5 threads For straight or spiral flutes The chamfer length of our EMUGE taps is adjusted to the workpiece material in each individual case.