Needle roller bearing during operation of matters needing attention

Listen to inspect running ( Windows) The machine ( machine) The condition and prepare thoroughly ( 彻底) Inspection plan has been more and more important. Which to needle roller bearing for attention ( 注意) Focus ( The key to metaphor of things) Because it is the most important of all the machines (rotating 旋转) Parts. Using the hearing to identify irregular operation is a very common method of needle roller bearing is in good operation condition will be low purring sound; If a sharp hissing sound, make sound, and other irregular usually said needle roller bearing in the operation condition of bad. How to listen? Methods: the use of old ( 使用) A wooden stick or screw ( 螺杆) Screwdriver on the needle roller bearing box, the other end of the stick to the ear; Advanced methods: using advanced instruments ( 设备) Such as electronic condition monitoring instrument, the workings of the diagnosis of needle roller bearing in advance. Touch if the needle roller bearing in more than 125 ℃ temperature ( 温度) Working for a long time, can reduce ( 减少) Needle roller bearing life ( 一生) , high temperature ( 高温) Often said needle roller bearing is in abnormal situation, the causes of high temperature are: lubrication ( lubrication) Insufficient or excessive lubrication, the lubricant contains impurities, heavy load, needle roller bearing damage, inadequate clearance, and high friction produced by the oil seal and so on. Thin wall bearing manufacturer for bearing low friction torque, high rigidity, good rotation accuracy, using the small diameter steel ball. The use of hollow shaft, ensure the lightweight and wiring of the space. Thin wall type bearing has realized the extremely thin cross section of the bearing, also has realized the product miniaturization, lightweight. The diversity of products extends its application scope. Such as cross section thin-walled bearing thin wall bearing ring can be a deep groove ball bearings ( C) At four o 'clock, contact bearing ( X) , angular contact ball bearings ( E) 。 Provide more various design in different series. Series depends on the size of the cross section. The ball and matching series. Deep groove ball bearings can support two-way axial load and radial load. So the temperature of the test needle roller bearing is necessary, whether it is measuring needle bearing itself or other important parts. The old method ( 方法) Is feeling touch needle bearing box temperature, can now use temperature detector, it can accurately measure the temperature of the needle roller bearing and displayed, so that effective protection measures. Get good lubrication observations needle roller bearing and the correct cut off impurities and moisture, said oil seal should not wear ( A basic type of component failure) 。 However, best when open the needle roller bearing box, with visual inspections needle roller bearing and periodically check the oil seal. Check of the condition of the near the needle roller bearing oil seal to ensure that they are enough to prevent hot liquids or corrosion ( Definition: refers to decay and disappear, erosion, etc. ) Along the axis of the liquid or gas infiltration needle roller bearing. Protection ring and labyrinth seal grease should be applied to ensure that its biggest protection ( fánghù) Action, if oil seal was worn, it should be replaced as soon as possible. The previous: bearing parts after heat treatment under the common quality defects of an article: select roll bearing method