FAG flat needle roller bearing clearance maintenance performance characteristics

FAG bearing if without the wrong choice can correctly use, to the plane before the use of needle roller bearing life, can be used for a long time, on the other hand, there are any early damage, and yield to the early damage of use, as the cause of the early damage, there is not enough use smooth on thinking, and therefore foreign invasion, the error of the bearing assembly and axis deflection of big, not enough discussion on shaft and bearing box and so on to say, these reasons have overlapping the condition of the match. In the use of various mechanical design life and various durable bearing limit match, at the same time resolution FAG bearing size. In choosing a FAG bearings, flat needle bearing often tend to think that, in the onset of aging fat smooth life, fatigue life of oil, abrasion resistance, low noise, also needs abundant discussion. When FAG bearing ring rotating load, such as adopting clearance fit, the needle roller bearing in the plane of the ring spinning process with appearance will attack creep phenomenon, easy generation micro wear and will burn with appearance at this time, cracks and other damage. Therefore, bearing accept slewing ring and mechanical parts of the load of the axis or hole with interference fit should be adopted. In the bearing parts of the machine, flat needle bearing should be in the radial, axial and circumferential ( Tangential) The positioning of the fixed three directions have different request. Ordinary conditions, FAG bearing axial fixation is closed by axial or local to complete with radial tight fit, institutional support in the home side bearing in axial not be fixed, often to compensate for agency system in axial or dimensional change in the process of heat bilges cold shrink. 1. Bearing is high precision, stable work, reliable. 2. Can run in high temperature, cryogenic and vacuum environment. 3. Structure is complex, condition of request, has magnetic disturbance to the environment, but no other pollution. 4. Small friction, low power consumption, high-speed operation can be completed. 5. Dc encourage type bearing type can only be active ( Active) 。 6. Permanent magnet type bearing is only passive type (the Passive) Passive type bearing, and can't be stable in three directions, at least one direction should adopt active type. 7. Repulsion type magnetic bearings, due to the magnetic utility ratio is low, the suction type complex structure, general rarely used. 8. Pure type electromagnet bearing is only five comfortable degree control type bearings, their large volume, quality, and power consumption are compared.