Needle Roller Bearing Features

With thin and long needle bearing roller (roller diameter D≤5mm, L / D≥2.5, L for roller length), so compact radial structure, the diameter size and load capacity are the same with other Slewing drives types of bearings , minimum diameter, especially for radial bearing mounting dimensions restricted results. Depending on different occasions, can be used without an inner ring of the bearing or needle roller and cage assemblies, then journal surface and the surface of the bearing shell holes to match directly as the bearing outer rolling surface, to ensure the load capacity taper roller bearing and operational performance there are rings with the same bearing, shaft or housing bore raceway surface hardness, machining accuracy and surface quality should be similar roller bearing rings. Such bearings can only bear radial load.