The hybrid ceramic bearing profile - bearing knowledge

First of all, Shanghai royal micro bearing co. , LTD. Take you know the general situation of hybrid ceramic bearing: ( 1) High heat resistance. Ceramic ball small thermal expansion coefficient and under the environment of high temperature will not, because of the temperature result in bearing ball, which greatly improve the bearing temperature, the use of ordinary bearing temperature at 160 degrees, ceramic ball can reach above 220 degrees. ( 2) High speed. Ceramic ball has the oilless self-lubrication property, ceramic ball friction coefficient is small, so the ceramic ball bearing has the very high speed, according to statistics, the ceramic ball bearing is generally the speed of the bearing 1. More than 5 times the speed. ( 3) Life is long. Ceramic ball can not add any grease, kill, that is to say, even if the oil bearing can operate, thus avoiding the ordinary bearing because grease off cause premature bearing damage. According to our test, and some customer feedback after using ceramic ball bearing service life is 2 - plain bearing Three times. ( 4) Finally and most important, insulation. Ceramic ball bearing is proposed, which can make the bearing of the insulation between inner and outer ring, because ceramic ball is an insulator, in bearings with ceramic balls between inside and outside the circle, can achieve the result of insulation, thus make the bearing can be used in a conductive environment. So, hybrid ceramic bearing generally what's it like? + zirconia ceramic ball bearing steel inside and outside the circle/silicon nitride ceramic balls stainless steel inner and outer ring + zirconia ceramic ball/silicon nitride ceramic balls that assembly can solve what problem? It a: raising speed; Secondly, prolong service life. But bearing consists of: internal and external ring, ball, retainer, dust cover four categories. So how do hybrid ceramic bearing can also like full ceramic bearing insulation? The requirement of insulation is bearing the inside and outside the circle of no contact, the core of the problem in keeping the frame. Cage purpose: isolation and guide roller rolling body movement. But when the cage is metal, the bearing inner and outer circle will have a contact, conductive leads to bearing, this also loses the ceramic part of the meaning of the ball. As shown in the figure below, the customer's requirements: 1) Bearing the high rotational speed, noise requirements in the Z2 group; 2) Bearing in the center of the magnetic field, bearing flexible rotation; 3) Service life than before all metal bearing more than two-thirds. To meet the requirements of the above bearing is: hybrid ceramic bearing cage + + nylon rubber cover + oil/oil free dry baking