Hikoki/Hitachi G18SH2 Spindle Suitable For 7" Grinding /Steel & Stone Cutting machine in Hikoki G18SW2/ G18SH2 Ag7 Model
Brand : Generic
Spindle Thread : M14
Suitable For : Hikoki / Hitachi G18SH2 / G18SW2 / G18ST.
spindle helps to rotate the blade for cutting / grinding. Spindle was attached with bearing in the top housing. So it can run without shaken.
so please read the user manual to avoid that.