The characteristics of long cylindrical roller bearings are similar to needle roller bearing, however, their radial section dimensions are larger than needle roller bearings. Therefore, they can carry a larger radial load. For the long cylindrical roller and needle roller, the length-diameter ratios are both greater than 3. The major difference is that the former's roller length is over 5mm, the later is smaller than 5mm. So they are mostly similar on their structures. Similar to the needle roller bearing, long cylindrical roller bearings can also only take pure radial load, but, do not prevent the axial displacement between the shaft and bearing housing, additionaly, the angle error for inner axial and outer axial is not allowed.