... 4categories,12series and 200varieties. They are mainly applied in high speed inside and outside round grinding ,high ... AD, ADW, ADL, ADQ. AD seriesare applied in the grinding below a speed of 40min/s of ... grinding wheel.ADW,ADL,ADQ are separately applied in grinding at a speed of 50min/s,60m ... America and Europe,etc. Electric drilling and milling spindle includes ADX and ADM series,They mate mumerical ...