As　temperature　increases　the　viscosity　of　the　heavy　machine　hydrostatic　turntable　oil　film　decreases,　resulting　in　the　decrease　in　the　bearing　capacity　of　the　table.　Therefore,　temperature　is　an　important　factor　affecting　the　speed　and　bearing　capacity　of　the　turntable.　The　Reynolds　equation　considering　the　centrifugal　force　and　the　convection　dominated　energy　equations　are　simultaneously　established　in　polar　coordinates.　Finite　difference　method　is　applied　to　establish　the　relationship　between　temperature　distribution　and　bearing　capacity　of　the　hydrostatic　turntable　under　different　speed.　The　established　model　is　verified　in　a　5　meter　vertical　lathe　hydrostatic　bearing　test　rig.　The　results　show　the　oil　temperature　increases　with　the　rotation　speed　of　the　table;　when　the　speed　reaches　40r/min,　the　temperature　rises　rapidly　and　the　bearing　capacity　decreases　sharply.　The　oil　gasket　seal　edge　temperature　rise　is　different,　in　the　high　speed　side　the　temperature　rise　is　more　obvious,　resulting　in　local　high　temperature　region.　This　study　may　provide　reference　for　further　analysis　of　thermal　compensation　and　structural　design　optimization　of　hydrostatic　turntable.　©　2018,　Editorial　Board　of　Jilin　University.　All　right　reserved.