Bearing R - ZZ series season selling

In a moment, to the blooming, charactizing a season again. Have professionals to remind machinery group, however, after a winter break, and friends while enjoying the warm spring, also don't forget to care for their own personal treasure, after all, it has already passed the whole winter crucible, under the baptism of the storm. And spring, the spring weather, also is the good weather for machinery, it is relatively easier to maintain. So for mechanical parts and how to maintain it to us? And mechanical parts for now, is a very tight season, for selected components, we should learn to choose, learn to cooperate! ! The choice of the bearing fit with choice generally in accordance with the following principles. According to the load acting on the bearing direction, nature and which side of the inner and outer ring spinning, then each ring on the load can be divided into directional load rotating load, static load or not. Rotation under load and not directional load ring should take interference fit ( Interference fit) Ring, under static loading, desirable transition fit or movable fit ( Clearance fit) 。 High load bearing or bear vibration and impact load, the interference should be increased. With hollow shaft, bearing thin wall bearing box or light alloy, plastic box, also needs to increase the amount of interference. Keep demanding rotates, it should be bearing with high precision, and size precision of the shaft and bearing box, avoid too much interference. If the interference is too big, may make the shaft or the geometry precision of bearing box affect the geometry of bearing ring, therefore the rotating precision of the damage to the bearings. The separation type bearing ( Deep groove ball bearing, for instance) Inside and outside the circle is interference fit, the bearing installation, remove the extremely inconvenient, had better be the one side of the inner and outer circle dynamic cooperation. 1) The influence of the nature of the load bearing load according to its nature can be divided into the inner ring spinning load, outer ring spinning load and no directional load, its relationship with cooperate as shown in table 1: bearing load nature way the inner ring spinning conditions illustration: negative turns: static load direction: fixed inner ring spinning load inner ring, outer ring static load by interference fit ( Interference fit) Outer ring: available to cooperate, Clearance fit) Inner ring: static negative circle: rotating direction of the load, and the outer ring and spin inner ring: negative turns: static load direction: fixed inner ring static load inner ring, outer ring spinning load available running fit ( Clearance fit) Outer ring: the interference fit ( Interference fit) Inner ring: static negative circle: rotating direction of the load, and the inner ring spinning at the same time