The　combined　angular　contact　bearings　are　widely　used　in　numerous　rotating　machinery　system,　but　few　research　works　on　the　combined　angular　contact　ball　bearings　have　been　reported.　To　solve　the　problem　about　inconsistency　fatigue　life　of　the　bearings　in　the　combined　bearings　with　asymmetric　arrangement,　this　paper　proposed　a　special　combined　bearings　arrangement　form　in　which　the　bearings　with　different　contact　angles　are　used　simultaneously　for　the　bearing　combination.　In　order　to　validate　the　effectiveness　of　the　proposed　method,　a　mathematical　model　is　proposed　to　analyze　the　load　distribution,　life　and　stiffness　of　the　combined　bearings,　and　the　combined　bearings　with　three　different　arrangements　are　comparatively　calculated　and　analyzed.　The　results　show　that　the　whole　life　of　combined　bearings　is　mainly　depend　on　the　life　of　the　bearing　under　heavy　load,　and　the　new　arrangement　form　in　which　the　initial　contact　angle　of　the　bearing　under　heavy　load　is　increased　that　can　improve　the　whole　life　of　combined　bearings.