Needle roller bearings are roller bearings with cylindrical rollers that are small in diameter. They have a high load carrying capacity, so they are extremely suitable for bearing arrangements where radial space is limited.
Needle roller bearings are usually by a bearing ring of the two ribs guide cage, roller and guide the ring composed of a combination of pieces which can be separated with another bearing ring and belongs to separable bearings.
Such bearings can be conveniently installed and removed, especially when require that the outer ring and the shaft, the casing is interference fit is more to demonstrate its advantages;Such bearings are generally only used to bear radial load, only the inner and outer rings are single row bearings with ribs can withstand axial load smaller or larger stationary intermittent axial load; with similar dimensions.
Compared with the deep groove ball bearings, such bearings have greater radial load capacity. However, with such a bearing with the shaft, shell holes and other relate parts of the processing demanding.