NNF... Ada2lsv / sl04 double row full loaded cylindrical roller bearing has two inner rings, two inner rings are connected together by clamping rings and cannot be separated. The outer ring has a middle flange which can bear two-way axial load and be used as positioning bearing. Due to the large distance between the two rows of rollers, it can also bear the overturning moment. The outer ring surface has two stop grooves, which can be axially positioned. Both sides of this type of bearing are equipped with contact sealing rings and lithium base grease. The operating temperature is limited to - 40 ℃ ~ + 80 ℃. Under certain conditions, this type of bearing does not need maintenance, but when there is water vapor or pollution during operation, and it is usually in medium or high speed operation, it must be supplemented with lubrication. In the case of oil lubrication, it is necessary to remove the sealing ring and clean the grease in the bearing. When oil lubrication is used, the running speed will be increased by 30%.