Каталог оснастка Dormer Pramet 2016 - страница 258

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HSK (hollow taper shanks) HSK-toolholders DIN 69893 DIN 69871 The hollow taper shank (HSK) has become popular since its standardization as an interface between machine spindle and tool. HSK benefits to the user include: ISO 60 •H  igh static and dynamic rigidity •H  igh precision axial and radial reproducibility •H  igh tool change accuracy and repeatability •H  igh speed machining performance • S hort tool changing times MAS 403 BT •C  oding and identification • Coolant feed DIN 2080 Balancing recommendations and r.p.m. limits Pramet HSK-toolholders are generally pre-balanced to G 6.3/15,000 rev./min. Fine balancing on request is possible. HSK-A Because the rotational speed is the largest following r.p.m. limits for HSK interfaces have influencing factor together with the limits regar- been recommended as guidelines within the HSK ding the spindle or spindle bearing interface, the standards: HSK-A 63 to 25,000 rev./min HSK-A 100 to 16,000 rev./min VDI Depending on the tool, it may be necessary to if machine and spindle manufacturers are taken into balance both the tool holder and tool when applying consideration and it is possible to define tools and the maximum r.p.m. Exact limits can only be deter­mined projecting lengths. MORSE 257