Threading Technology – Clamping Technology 520

583 Soft- synchro Speed- synchro KSN MQL SFM HF EM Accessories Tech. Info Product Finder Quick-Change Adapters EM Series Suitable for all our quick-change tap holders of KSN and SFM series Depending on the type: with coolant supply through the tool center or along the shank, overload clutch and length adjustment. Clamping of the tool is achieved – depending on the type – by a ball clamping system, collets type ER (GB) or collets type PGR (GB).