Full complement cylindrical roller bearings are designed to withstand the heavy loads. In the same width, the bearings and conventional bearings with cage, compared with a high load carrying capacity, small radial section, you can save space, but the speed is relatively low. In order to work the bearing in the case of continuous operation, the bearings angular contact ball bearing have to withstand a certain minimum load, that is, C / P <25. Otherwise it will aggravate the frayed due to insufficient lubrication and high-speed operation. All multi-row cylindrical roller bearings on the outer ring has a lubrication groove and lubrication holes.