Abstract:A cycloid drive belongs to precision drive and its varying oilsupply layer during meshing process influences the transmission efficiency and the contact fatigue.The variable to describe the starved degree,i.e.,the fractional film content,was incorporated in Reynolds equation.A numerical finite line starved lubrication model was built and the effect of inlet oil film thickness of uniform distribution on the pressure and film thickness profile was investigated.The results show that under the starved lubrication condition,as the oilsupply layer increases, the effect of shape of inlet oil film thickness on the pressure and film profile is decreased.As the speed increases,the effect of shape of inlet oil film thickness on the pressure and film distribution is increased.However,as the load increase,the effect of shape of inlet oil film thickness on the pressure and film profile is decreased.