The high temperature of broken oil is an extremely common problem, and the use of contaminated lubricating oil (old oil, dirty oil) is a common mistake that causes high oil temperature. When the dirty oil flows through the bearing surface in the crusher, it abrades the bearing surface like an abrasive, resulting in severe wear of the bearing assembly and excessive bearing clearance, resulting in unnecessary replacement of expensive components. In addition, there are many reasons for the high oil temperature, no matter what the reason, do a good job of maintenance and repair of the lubrication system is to ensure the normal and stable operation of the crusher. General lubrication system maintenance inspection, inspection or repair must include at least the following steps:
By simply observing the feed oil temperature and comparing it with the return oil temperature, many operating conditions of the crusher can be understood. The oil return temperature range should be between 60 and 140ºF(15 to 60ºC), with an ideal range of 100 to 130ºF(38 to 54ºC). In addition, the oil temperature should be monitored frequently, and the operator should grasp the normal return oil temperature, as well as the normal temperature difference between the inlet oil temperature and the return oil temperature, and the need to investigate when there is an abnormal situation.
02 Monitoring Lubricating oil pressure During each shift, it is very important to observe the horizontal shaft lubricating oil pressure. Some of the factors that may cause the lubricating oil pressure to be lower than normal are: lubricating oil pump wear resulting in a reduction in pump displacement, the main safety valve failure, improper setting or stuck, shaft sleeve wear resulting in excessive shaft sleeve clearance inside the crusher. Monitoring horizontal shaft oil pressure on each shift helps to know what normal oil pressure is, so that appropriate corrective action can be taken when anomalies occur.
03 Check the lubricating oil tank return oil filter screen The return oil filter screen is installed in the lubricating oil box, and the specifications are generally 10 mesh. All the return oil flows through this filter, and importantly, this filter can only filter oil. This screen is used to prevent large contaminants from entering the oil tank and being sucked into the oil pump inlet line. Any unusual fragments found in this filter will require further examination. Lubricating oil tank return oil filter screen should be checked every day or every 8 hours.
04 Adhere to the oil sample analysis program Today, oil sample analysis has become an integral and valuable part of preventive maintenance of crushers. The only factor that causes internal wear of the crusher is “dirty lubricating oil”. Clean lubricating oil is the most important factor affecting the service life of the crusher’s internal components. Participating in an oil sample analysis project gives you the opportunity to observe the condition of lubricating oil over its entire life cycle. Valid return line samples should be collected monthly or every 200 hours of operation and sent for analysis. The five main tests to be performed in the oil sample analysis include viscosity, oxidation, moisture content, particle count and mechanical wear. An oil sample analysis report showing abnormal conditions gives us the opportunity to inspect and correct faults before they occur. Remember, contaminated lubricating oil can “destroy” the crusher.
05 Maintenance of the crusher respirator The drive axle box respirator and the oil storage tank respirator are used together to maintain the crusher and the oil storage tank. The clean breathing apparatus ensures a smooth flow of lubricating oil back to the oil storage tank and helps prevent dust from invading the lubrication system through the end cap seal. The respirator is an often overlooked component of the lubrication system and should be checked weekly or every 40 hours of operation and replaced or cleaned as needed.
Post time: Dec-12-2024