With the increase of the load outside the bearing, not only the contact load of the maximum loaded roller is increased, but the unevenness of the load on the roller also becomes larger. Therefore, the influence of the external load on the contact load distribution of the roller should be considered during the design of the bearing. With the decrease of the bearing clearance, the load of the roller is increased. When the bearing negative clearance value is large, the contact area between raceway and roller decreases significantly, and the load distribution is also uneven. The influence of bearing clearance on bearing load distribution is not negligible.