Stamping needle roller bearing with outer ring is a kind of needle roller bearing with thin stamping forming outer ring. Compared with ordinary needle roller bearings, besides the difference in shape and structure, it is more manifested in performance. What are the characteristics of stamping needle roller bearings?
Because of its low cross-section height, the stamping needle roller bearing has a high load-bearing capacity, which can be used for compact structure, low price and bearing box bore can not be used as the raceway of needle cage assembly.
Because of the structural particularity, the needle roller bearing and the bearing box of stamping outer ring must be installed in the way of interference and coordination. If the axially positioning functions such as shoulder and stop ring can be omitted, the inner hole of the bearing box can be made very simply and economically.
It is found that the needle roller bearings with stamped outer rings mounted on the axle end have two types, one side open type and the other side closed type, which meet different working conditions. The base end face of the closed stamped outer rings can withstand little axial guiding force. Stamping needle roller bearings with outer rings generally do not have inner rings. In cases where the journal can not be hardened and ground, inner rings can be used.
Normally, the hardened steel outer ring of the punched outer ring needle roller bearing is inseparable from the needle roller cage assembly, and the free space for storing lubricant can prolong the supplementary lubrication interval. The outer ring of the bearing is also designed with lubricating oil holes. According to user's needs, all single-row punched outer ring needle roller bearings with shaft diameter greater than or equal to 7 mm can be equipped with outer rings with lubricating oil holes.
