A sliding part chiller for machine tool is provided to prevent the thermal transformation of the reference surface and the machining accuracy of machine tool while processing. A sliding part chiller for machine tool comprises: a cooling space(2) formed inside of each reference surface(11); and a cooling fluid circulating part(3) circulating the cooling fluid in each cooling space. The cooling space includes: a bending long hole(21) equipped in order to circulate the cooling fluid through the cooling fluid circulating part: and a cooling fluid chamber equipped in order to circulate the cooling fluid through the cooling fluid circulating part.
