Threading Technology – Clamping Technology 520

632 Tap Holders Soft- synchro Speed- synchro KSN MQL SFM HF EM Accessories Tech. Info Product Finder 7.1 Description of the symbols for performance characteristics IKZ Internal coolant supply (IKZ) If a machine tool is equipped with internal coolant supply through the machine spindle, then the thread production cycle can be done with special economic efficiency by conducting the coolant-lubricant through the axial bore in the tool, or along the tool shank. The advantages of this arrangement are: • Perfect lubrication at the cutting edge of the tool • Improved thread quality • Chips are washed out of the thread hole It is, however, necessary to make sure that the coolant-lubricant used is appropriately filtered and that the tap holder used is suitable for the coolant pressure of the machine. Depending on the design of the tool, with or without internal coolant supply, the quick-change adapters are available in two versions: Conduction of internal coolant supply with tools with IKZ Quick-change adapter, e.g. type EM Conduction of internal coolant supply with tools without IKZ Quick-change adapter, e.g. type EM/IKZ MQL Minimum-quantity lubrication (MQL) Suitable for machines which are equipped with a central minimum-quantity lubrication system – this is often called “dry machining”. In addition to the advantages described under “IKZ” this lubrication technology is very friendly to the environment. The high cutting data common in wet machining can be used without any change. Another advantage is the reduction of costs, since there is no need to purchase and maintain expensive filter installations, or to dispose of used emulsions. For more detailed information, see 7.6 Minimum-quantity lubrication (MQL) . MQL 1 Minimum-quantity lubrication (1-channel MQL system) In a 1-channel MQL system, the aerosol is generated in the MQL device before it enters into the machine spindle, and is then conducted through the work spindle and the clamping system to the point where it is needed. For more detailed information, see 7.6 Minimum-quantity lubrication (MQL) . MQL 2 Minimum-quantity lubrication (2-channel MQL system) In a 2-channel MQL system, oil and air are conducted through the spindle separately, the mixing of the two media is done only at the point where they enter the tool holder. For more detailed information, see 7.6 Minimum-quantity lubrication (MQL) . p max 85psi (6bar) p max 140psi (10bar) p max 700psi (50bar) p max 1400psi (100bar) Coolant pressure at the entry to the holder For the sake of trouble-free operation of the tool holders, it is vital not to exceed the specified maximum coolant pressures.

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