Si3N4 Double-Row Self-Aligning Ball Bearings With High Precision

Description:

1. Si3N4 races and balls: Are made of highly purified, submicron silicon nitride powder with an alpha phase of more than 92%, and is processed by GPS (Gas Pressure) sintering and HIP (Hot Isostatic Pressure) sintering technology. Compared with GPS sintered silicon nitride material, the porosity, wear resistance, crushing value and fatigue contact life of after HIP sintered sinlicon nitride have been greatly improved, which is the preferred material for ultra-high speed and high precision ceramic bearings.

2. Performance advantages of Si3N4 all ceramic bearings: In addition to the many advantages of ZrO2 ceramic bearings, but also has a small volume density, light weight structure, resistance to dry friction, low coefficient of linear expansion, self-lubrication, high fatigue life. Corresponding angular contact bearings are preferred structure for high-speed spindle, electric spindle, CNC machine tool spindle bearings. They have high hardness Hv1500, are wear-resistant, resistant to a variety of strong acid, strong alkali, salt corrosion (in addition to hydrofluoric acid, nitric acid), non-magnetic, non-conductive, high insulation, high temperature resistance to 800 ℃, high speed, its service life is far beyond the same metal bearings several times to dozens of times, etc.

Reference data of Ceramic Double-row Self-aligning Balls Bearings: