1, observation: rolling bearing lubrication and no debris and moisture to enter, shows that the bearing oil seal not wear, if you open the original bearing box, bearing should be visual inspections and periodically check the oil seal. Check near the bearing oil seal condition to ensure they are sufficient to prevent the hot liquid, corrosive liquid and gas infiltration along the axis of the bearing oil seal, if damage should be replaced as soon as possible. Check the automatic lubricating system ensures that the oil or grease into the bearing, and ensure that the correct amount of added and check the lubricant is discolored or black, if there is such a situation typically lubricants contain impurities, the use of this can be harmful to the bearing.
2, listen: use hearing to identify irregular operation of a very commonly used method. As with a screwdriver or electronic stethoscope to detect a streamlined abnormal noise is often used to have some experience of the operator and repair personnel. Bearings if it is good running condition will be issued a low hum sound, such as bearing a sharp hissing sound, squeaking sound when you and other irregular, it may be that the bearing has been in bad condition.
3, touch: the high temperatures often bearing has been in abnormal conditions, high temperature of bearing lubricant is harmful, but caused by the rolling bearing lubricants temperature bearing some time when, if the bearing at the temperature higher than 120 DEG C in long-term operation will reduce bearing life. Bearing high-temperature lubricants caused by insufficient or excessive lubricant, lubricant contains impurities, heavy load, bearing damage, inadequate clearance and oil seal friction. Under normal circumstances, bearing lubrication lubrication in or after there will be natural temperature rise and will last for a day or two.
(1). Check the cooling water pressure, flow and pipe system is normal. If low water pressure may be clogged filter, cannot be handled in time, can be shut down, when the confirmation work, and then put into use.
(2). Governor oil pressure should be checked, if oil pressure may lead to cooling water hydraulic valve.
(3). Check whether there is abnormal sound of bearing, and detection of rolling bearing vibration if there is abnormal.
(4). The oil sampling observation of oil color is changing, and tests to see if spoilage. If the confirmation deterioration, downtime should be replaced with new oil.
(5). Check the oil level gauge oil level is normal, if not normal, check whether the tank vent valve close. If you have secured, should fill oil, if it is a sealant gasket oil leakage, should stop processing.