Hello all；

I design sk30 spindle, I retrieve Germany 7 / 24 tools standard DIN 69871,
So I ask, sk30's Spindle's standard ?

(I retrieve the ISO30 standard tool is ISO 7388, the standard spindle is ISO9270, or ISO9524)
(For BT30, I retrieve the tool JIS B 6339, spindle standard JIS B 6340)