Needle roller

The roller standard is equipped with thin and long roller bearings (the length of roller bearings is 3-10 times of the diameter, and the diameter is generally not more than 5mm). Therefore, the axial structure is compact, and its nominal diameter specification and load working capacity are the same as other types of rolling bearings. When the diameter is small, it is very suitable for the bearing plate results with limited axial installation specifications. According to the different application places, rolling bearing or roller diameter without inner hole and cage parts can be used. At this time, the motor shaft surface and shell hole surface matched with rolling bearing shall be the inner and outer turning surface of rolling bearing immediately. In order to ensure the load working capacity and operation characteristics of rolling bearing with ferrule, the strength of shaft or shell hole dovetail guide rail surface shall be produced and processed The precision and surface quality should be similar to the dovetail guide rail of roller bearing ring. This kind of rolling bearing can only bear axial load.