Bearing Handling Care - Full Version.ppt_dalian.ppt_chinese_1.ppt

Maintenance Knowledge 维修保养知识 Maintenance Concept 维修保养概念 Proper Handling of Bearings 正确处理轴承 Bearing Arrangements Applications 轴承排列配合和应用 Evolution of Maintenance Practices维修保养措施的改进发展 Reactive Maintenance 事后维护 Run to failure 运行到失效 Fix/replace when broken 损坏时修理或更换 No measures taken to anticipate or prevent mechanical problems 没有预先测量或预防机械故障 Reactive Maintenance 事后维护 Advantages 优点: Cost effective for small, non critical equipment 对于小型，非关键的设备符合成本效益 Disadvantages 缺点: Sudden, unexpected failures 突然地，意料之外的失效 Unplanned and costly downtime 无计划和成本高的停机 Extensive secondary damage 大量的二次损坏 Equipment replacement cost 设备更换费用高 Evolution of Maintenance Practices维修保养措施的改进发展 Preventive Maintenance 预防性维护 Scheduled shutdowns 定期停机 Regular overhauling regardless of machine/part condition 无论机器/配件的状况如何都定期检修 Based on operation hours, months, mileage, etc 基于运行时间，月数，里数等等 Preventive Maintenance 预防性维护 Advantages 优点: ‘First line of defense’ – provides peace of mind “第一道防线” – 提供无忧运行 Disadvantages 缺点: Rather costly and wasteful 成本更高且浪费 Require large spare parts inventory 需要大量备件库存 Require lots of manpower 需要大量人力 Scheduled shutdown = downtime 定期停机 = 停工 Evolution of Maintenance Practices维修保养措施的改进发展 Predictive Maintenance 预见性维护 A maintenance system that monitors the operating condition of the machines 一个监测机器运行状态的维修保养系统 Predict the likelihood of machine failure in the future 预见未来机器故障的可能性 Employs technologically advanced, sophisticated and computer-aided tools 采用先进技术，精密设备和电脑辅助工具 Predictive Maintenance 预见性维护 Predictive Maintenance 预见性维护 Advantages 优点: Reduce downtime 减少停工期 (Repairs carried out only when required 仅在需要时进行维修) Reduce secondary damage 降低二次损坏 Decrease unnecessary part replacements 减少不必要的备件 Disadvantages 缺点: May not reduce maintenance costs dramatically 不能显著的减少维修保养成本 Does not address root cause of problems 没有解决问题的根源 Evolution of Maintenance Practices维修保养措施的改进发展 Proactive Reliability Maintenance积极的可靠性