Mill Roller bearing is made up of internal ring

middle rolls and external ring

which belongs to multi bodies contact problem.So it is rather difficult and complex to analyze load peculiarities of mill roller bearing directly.In this paper

based on three dimensional elastic contact BEM

it is introduced that middle rolling bodies can be described as plate units

placed on the internal ring

therefore the contact problem can be changed from multi bodies to two bodies.As the elastic deformation of plate unit

it can be calculated by Hertz contact formula and is regarded as a gap to be substituted to the total matrix equality

so the three dimensional distribution of load peculiarities of mill roller bearing can be achieved.The calculating model of this method is visualized and simple

and has higher accuracy

therefore it become effective numerical method to design and analyze load peculiarities of mill roller bearing.