Column rotation check of the railway freight car rolling bearings

Column inspection of railway freight car rolling bearings 2020 - the rotation of the inspection 05 - 12 column to check on the flexibility of railway freight car rolling bearings rotation check, use jack tools such as the top side of the frame to frame, the load-bearing saddle up with the side of the jacking frame and a bearing saddle and bearing completely leave so far, must pay attention to safety when working. To handle the rotational part inspection car bearing outer ring to observe its rotation is flexible, there is no sound and card lag phenomenon, functioning to handle the turns, rolling bearing rolling bearing rotating flexible, feel is smooth silent, no binding and different sounds. Vice is abnormal. To handle the rotating pieces bearing inner lack of oil bearing, a mild, even 'hua hua' sound is normal, this is leave roller load area ( Above the shaft neck) And landed on the cage bar, the sound of every week sound is consistent and continuous. When bearing inner lack of oil, there will be impact roller cage beams have a larger impact and regularly and crisp 'man'. Mixer roller and raceway stripping, card bearing inner and outer ring raceway surface or roller rolling surface once appear, stripping, card, due to the rolling surface damage and drop of melted metal, bearing rolling not flexible, and every turn to stripping, the wounds have card lag phenomenon, at the same time, the vibration and clearance 'empty' feeling, this kind of phenomenon for roller or raceway local dissection, more CARDS. Roller broken in pieces when roller broken, according to the degree of its broken and scattered will appear different degrees of rotation is not flexible, until it is difficult to rotate both messy random vibration sense or sound. Turn the bearing by hand, if the rotation is not freely or simply turn the fixed roller broken. In pieces bearing internal corrosion or entities eyewinker when bearing internal corrosion or entity foreign body, turn the bearing by hand, will appear different sound or card lag phenomenon. Pieces bearing internal rolling skin turn the bearing by hand if they give 'sasha vujacic' of dry friction, and slightly shaking the feeling of this kind of phenomenon for bearing inner and outer ring raceway surface or roller rolling surface of the rolling skin. Cut pieces after seal seat to handle the rotation shaft bearing, if rotating bearing resistance and friction, scratch journal after seal seat. （ Source: the resources of railway vehicle platform)