Before installing the bearings should be cleaned. Installation, you should use special tools FAG bearings straight and evenly pressed into, do not hand hammer percussion, especially the ban on direct percussion on linear bearings. When the bearing race and housing bore with the loose bore shall repair or replace the bearings, not to play in the bearing mating surface pitting or copper pad reluctant to use. Bearing Removal should be the appropriate pull the bearing puller, do not use chisels, hand hammer percussion bearing.
FAG bearings commonly used lubricant oils and greases. When the circumferential speed of the shaft is less than 4-5m / s, or lubricating oil can not be used in the automobile parts with grease lubrication. The grease lubrication seal structure is simple, easy to drain grease, not affected by temperature, plus a grease can be used a long time.
Grease should pay attention to two issues, first, according to automotive requirements of the specification, the choice of a suitable grade of grease. For example, automobile water pump bearings should not use the Kea grease, because of its poor water resistance. Added to the linear bearing grease in moderation, generally filling the bearing cavity 1/2-1/3 appropriate, too much is not only useless, but also increase the running resistance of FAG Bearings, hotter. Particular attention to automotive wheel bearings should be encouraged to "empty hub lubrication, that is, only on the bearings coated with a layer of an appropriate amount of grease can, otherwise, not only a waste and poor heat dissipation, but also the grease heat spillover, which may affect braking performance.
Lubricating friction is small, and the heat is mainly used for high-speed and high ambient temperature bearings. Grades of lubricating oil according to automotive requirements of the specification to choose from, car maintenance cycle and then promptly replaced, the release of the old oil to the institutions addition of a new oil after cleaning, refueling should be added to the specified marking, or flush with the fuel filler (depending on the specific structure of the car), not more.
Determine the bearing can be used again, according to FAG Bearings degree of injury, mechanical properties, the importance of operating conditions, inspection intervals and other relevant factors to decide. But check if any of the following defects are found, the bearing can not continue to use, the need to replace the new spherical bearings.
1, the viscosity of the lubrication conditions between the rolling contact surface to form a sufficiently separate the two surfaces of the lubricating film, the lubricant must maintain a certain minimum viscosity at normal operating temperature to reduce bearing friction, high bearing life, the effects of the main factors bearing mean diameter and speed of work viscosity lubricant viscosity at operating temperature by working temperature t4 ° C said viscosity is determined by the viscosity-temperature curve and the viscosity ratio is a representation of the indicators of the film-forming ability, its speed and other factors on bearing life has a great impact on the poor run state (temperature rise, the speed is reduced, an increase in pollutants) spherical bearing life may pollution, lower amplitude.
Bearing life calculation and influence factors of the correction factor correction factor is calculated analysis of various affecting the correction factor operator a basis coefficient of the bearing life, the FAG Bearings get a better lubrication conditions, should be greater than or equal to the viscosity ratio and can not be too large, otherwise the increase in viscosity may cause the bearing operating temperatures, when this should be used containing extreme pressure lubricant additives In addition, pressure will also change the viscosity of the lubricating oil between the movable surface, the calculation method of the symbolic significance are considered to run conditions (operating temperature speed Netherlands reproduced the size of the lubrication external spherical bearing life.