Motor bearing: the selection of bearing clearance

Hot charging work related matters needing attention are as follows: ( a) The bearing must not be heated to ℃ above; ( b) For the bearing is not direct contact with the bottom of the tank, can consider to put on the metal mesh, bearing or bearing hung; ( c) Bearing heated to higher than the required temperature ℃ ℃, so that will not happen in inner ring cooling operation, difficult to install; ( d) After installation, bearing cooling, width contraction, so use shaft nut, or other appropriate method, fastening, in case of gap between inner ring and bearing retaining shoulder. Cage cage, cage） , namely the bearing cage, also known as the bearing retainer, refers to the part of the package all or part of the roll body, and with the movement of the bearing parts, used to isolate rolling body, usually also guide roller and keep it in the bearings. Under the condition of high speed light load using cylindrical bearing shell to prevent instability, the following figure, when moving the position of the inner ring, we can be both positive and negative clearance roughly. If the choice is greater than surplus to cooperate, will force bearing raceway geometry deformation shape, abnormal vibration during operation. If choose the larger clearance fit, can make the bearing outer ring in the relative sliding bearing hole, rose sharply result in bearing damage. Began in the industrial nations from the house of a mechanical equipment manufacturers gradually developed into a set research and development, production, sales and service in the body of high and new technology enterprises; From a purely rely on the introduction of advanced technology to build equipment research and development laboratory, a number of patented technology and applied to production. - Mm, in order to protect the inner wall of the cylindrical bushing and bearing hole against. Wheel hub unit usually driven and rotate the outer ring up for the front or rear wheel, a small rotation of the inner ring installation on the flange inner ring, to great extent improve the bearing capacity. Early failure of bearing from mainframe to parts of the manufacturing accuracy, installation quality, conditions of use, the lubrication effect, external, thermal effect and host factors such as sudden failure. Loose bearing sets of joint bolt, eccentric eccentric, tilt, or excessive load may result in geometrical stress concentration or surface spalling preventive measures: precision bearing seat and shoulder. This kind of bearing with race for line contact bearings, therefore, guilin small make up is to go into more detail about today, how to find the cause, cool the Raymond mill powder airland. Eccentric sleeve eccen - Methyl amino acetonitrile triclockin - Methyl amino acetonitrile gcollar side has relatively eccentric inner hole groove steel ring, the installation of outer spherical bearing inner ring equal elongation of the end. Bearing grease selection principle is what? Cases there is two conditions: the unit pressure is high and low sliding speed, choose cone into the smaller varieties, instead choosing degree of cone into the larger varieties; The dropping point of lubricating grease used - A work should be higher than the bearing temperature of about - The work of degree, in order to avoid the loss of grease too much; In water or damp environment, should choose waterproof strong calcium base or aluminium base grease, when temperature is higher, should choose calcium sodium based or complex calcium base grease.