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...
Four-point contact ball bearings are radial single-row angular contact ball bearings with raceways that are designed to support axial loads in both directions. They are capable of absorbing radial forces and axial forces on both sides due to a separated inner or outer ring which produces two contact angles and the eponymous four-point contact.
Compared with four-point contact ball bearings and double-row bearings, the occupied axial space will be significantly reduced.