Standard of sk toolholder

November 21, 2022

The standard of sk tool handle is German industrial standard DIN 69871. The spindle taper holes of machining centers are generally divided into two categories, namely the general system with a taper of 7:24 and the HSK vacuum system with a taper of 1:10.

7: The general tool handle with a taper of 7:24 generally has five standards and specifications, namely NT (traditional type), DIN 69871 (German standard), IS07388/1 (international standard), MAS BT (Japanese standard) and ANSI/ASME (American standard).

SK tool handle standard: SK refers to the German industrial standard DIN 69871, which is mainly divided into the following four categories:

SK A type: without central cooling water hole

SK AD type: with central cooling water passage

SK B type: with side flange cooling water hole

SK AD/B type: with core and side flange cooling water hole, but the side hole is threaded hole. When core internal cooling is adopted, the side can be blocked with bolts.

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