{"id":420,"date":"2020-08-13T02:07:49","date_gmt":"2020-08-13T02:07:49","guid":{"rendered":"https:\/\/parfaite.com\/?page_id=420"},"modified":"2023-06-21T15:25:25","modified_gmt":"2023-06-21T07:25:25","slug":"taper-accuracy","status":"publish","type":"page","link":"https:\/\/parfaite.com\/en\/technology-center\/taper-accuracy\/","title":{"rendered":"TAPER ACCURACY"},"content":{"rendered":"<p>Shank accuracy refers to the close tolerance of the shank of the tool holder and the inner hole of the spindle. This tolerance level is divided into 12 levels from AT 1 to AT 12. The higher the shank tolerance level, the closer the shank of the tool holder is to the inner hole of the spindle. For example, AT3, which has an area of 85%, is better than AT4. 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