A. Types of LubricantsLubricants for pulley bearings are mainly of the following types:1. Lubricating oil:Liquid form: Widely used, with good fluidity and cooling properties.Performance characteristic...
Radial needle roller bearings with inner rings do not limit the axial displacement of the shaft or housing and have high limiting speeds. It is usually NA and NI type. Since the needle rollers can be separated internally with cages, friction is reduced, so it can be used in higher conveyance conditions.