清洁度原则（最新）油液的干净度：油液的干净度----就是油液污染程度的定量描述。油液的干净度的评定办法油液中颗粒尺寸的分布：对数座标以 对数/线性 log/log2干净度等级表达法：NAS1638、SAE749D、ISO4406NAS1638 油液干净度等级（100ml 液压油液中颗粒数）污染度等级颗粒尺寸范畴（μm）5-1515-2525-5050-100>1000012522410025044820150089163121000178326133566311244000712126224580001425253458616000285050690167357001012180328640001140020253606491280002280040507201281025600045600810014402561151912001620028805121210240001824003240057601024SAE749D 油液干净度等级（计数法）液压油污染等级试行原则（每 100ml）尺寸范畴污染等级μm01234567-102.5 - 5待定5 - 102700460097002400038700012800010 - 256701340208053601070021400425 - 5093210380780151031306500待定50 - 1001628561102254301000>10013511214192* 电力行业原则 DL/T571-95 （SAE749D 油液干净度等级） ISO 油液干净度等级颗粒数/mlRR5/15不不大于不大于（等于）浓度等级数例 1：不不大于 5 微米的颗粒浓度80,000160,00024为 400 颗/ml.40,00080,00023 不不大于 15 微米的颗粒浓度20,00040,00022为 65 颗/ml.10,00020,00021 则 ISO = 16/135,00010,000202,5005,00019例 2：不不大于 5 微米的颗粒浓度1,3002,50018为 16,030 颗/ml.6401,30017 不不大于 15 微米的颗粒浓度32064016为 2,490 颗/ml.16032015 则 ISO = 21/188016014408013延展等级 R2/R5/R15204012例 3：不不大于 2 微米的颗粒浓度102011为 32,200 颗/ml.51010 不不大于 5 微米的颗粒浓度2.559为 16,030 颗/ml.1.32.58 不不大于 15 微米的颗粒浓度0.641.37为 2,490 颗/ml.0.320.646 则 ISO = 23/21/180.160.3250.080.1640.040.0830.020.0420.010.021干净度等级对照表ISO代码每毫升颗粒数>10μmAC 粉尘重量水平毫克/升MILSTD1246A（1967）NAS1638（1964）SAE749 等级26/23140.0001.00025/2385.0001.00023/2014.00010070021/184,5001220/182,40050020/172,3001120/161,4001019/161,2001018/155809617/142803008516/1314017415/12706314/124020014/11355213/10140.14112/993011/85210/8310010/72.3110/61.40.019/61.208/50.6007/50.3506/30.140.0015/20.04252/0.80.0110俄国 гост 原则工业液污染度分级гост 17216-7110...
