1.5kw,2.2kw,3.5kw,4.5kw,6kw,7.5kw Changsheng air cooling spindle There are 1.5kw, 2.2kw, 3.5kw, 4.5kw, 6kw atc, 7.5kw water cooled spindles. Water cooled spindle speed: 18000RPM, with low noise. Economical price,long using life.