An integral shaft bearing is popular for carrying higher specific load capacity, preventing misalignment defects and eliminating the risk of undesirable distortion of bearings, in compression to any other bearings. Integral shaft bearing are used to reduced rotational friction and support, axial and radial loads which generate friction and increased temperature and stresses inside the bearings. If the generated heat cannot be properly removed from the inside bearing ,the temperature might exceed certain limit. Due to which the bearing should be fail. That why I analyze heat flow, temperature distribution and stress in a bearing system, a typical integral shaft bearing and its environment has been design and analyze the system using the famous finite elements tool ANSYS workbench 14.0. In this research, structural and thermal characteristics performance of integral shaft bearing to Analyze stress, thermal elongation and temperature distribution due to friction also its effect on bearing clearances , and vice-versa, has been investigated on different materials with different parameters.