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中国轴承网告诉您—如何检验NSK轴承润滑脂是否变质
发布日期:2024-02-07

 轴承网小贴士告诉您:在使用NSK轴承的过程中,润滑脂是非常关键的。如果,使用了变质的润滑脂,不仅起不到应有的作用,而去还会损坏NSK轴承。
    1.
光照法
  在天气晴朗的日子,用螺丝刀将NSK轴承润滑油撩起,与水平面成45度角。对照阳光,观察油滴情况,在光照下,可清晰地看到轴承润滑油中无磨屑为良好,可继续作用,若磨屑过多,应更换润滑油。
    2.
油滴痕迹法
  取一张干净的白色滤纸,滴油数滴在滤纸上,待润滑油渗漏后,若表面有黑色粉末,用手触摸有阻涩感,则说明润滑油里面杂质已很多,好的润滑油无粉末,用手摸上去干而光滑,且呈黄色痕迹。
    3.
油流观察法
  取两只量杯,其中一个盛有待检查的NSK轴承润滑油,另一只空放在桌面上,将盛满润滑油的量杯举高离开桌面30-40厘米并倾斜,让NSK轴承润滑油慢慢流到空杯中,观察其流动情况,质量好的润滑油油流时应该是细长、均匀、连绵不断,若出现油流忽快忽慢,时而有大块流下,则说润滑油已变质。
    4.
手捻法
  
NSK轴承润滑油捻在大拇指与食指之间反复研磨,较好的润滑油手感到有润滑性、磨屑少、无摩擦,若感到手指之间的砂粒之类较大摩擦感,则表明润滑油内杂质多,不能再用,应更换新润滑油。
(一)NSK轴承润滑的作用 润滑对滚动轴承的疲劳寿命和摩擦、磨损、温升、振动等有重要影响,没有正常的润滑,NSK轴承就不能工作。分析轴承损坏的原因表明,40%左右的轴承损坏都与润滑不良有关。因此,轴承的良好润滑是减小NSK轴承摩擦和磨损的有效措施。
(二)脂润滑和油润滑的比较 NSK轴承的润滑方法大致分为脂润滑和油润滑两种。为了充分发挥NSK轴承的功能,重要的是根据使用调减和使用目的,采用润滑方法。
(三)脂润滑润滑脂是由基础油,增稠剂及添加剂组成的润滑剂。当选择时,应选择非常适合于NSK轴承使用条件的润油脂,由于商标不同,在性能上也将会有很大的差别,所以在选择的时候,必须注意。
(四)润滑脂的选择 按照工作温度选择润滑脂时,主要指标应是滴点,氧化安定性和低温性能,滴点一般可用来评价高温性能,NSK轴承实际工作温度应低于滴点10-20℃。合成润滑脂的使用温度应低于滴点20-30℃。
(五)油润滑 在高速、高温的条件下,脂润滑已不适应时可采用油润滑。通过润滑油的循环,可以带走大量热量。 粘度是润滑油的重要特性,粘度的大小直接影响润滑油的流动性及摩擦面间形成的油膜厚度,NSK轴承工作温度下润滑油的粘度一般是12-15cst
(六)固体润滑在一些特殊使用条件下,将少量固体润滑剂加入润滑脂中,如加入3~5%的1号二硫化钼可减少磨损,提高抗压耐热能力,对于高温、高雅、高真空、耐腐蚀、抗辐射,以及极低温等特殊条件,把固体润滑剂加入工程塑料或粉末冶金材料中,可制成具有自润滑性能的NSK轴承零件,如用粘结剂将固体润滑剂粘结在滚道、保持架和滚动体上,形成润滑薄膜,对减少摩擦和磨损有一定效果。
(七)润滑剂的补充与更换 a.润滑脂的补充间隔时间 由于机械作用,老化及污染的增加,NSK轴承配置中所填的润滑基将逐渐失去其润滑性能。因此,对润滑秩需不断补充和更新。润滑剂补充的间隔时间会因NSK轴承的形成、尺寸和转速等而不同,根据运转时间需要补充润滑脂的大致间隔时间。

基本 文件 流程 错误 SQL 调试
  1. 请求信息 : 2026-08-16 07:25:31 HTTP/2.0 GET : https://zcwcn.com/news/show-12608.html
  2. 运行时间 : 0.121321s [ 吞吐率:8.24req/s ] 内存消耗:5,863.55kb 文件加载:150
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=af7ba30225a9ef375cdf16237d231a52
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  6. SELECT * FROM `zzw_common_cat` WHERE `parent_id` = 15 AND `deltime` = '' ORDER BY `sort` ASC LIMIT 0,8 [ RunTime:0.000529s ]
  7. SELECT * FROM `zzw_common_cat` WHERE `parent_id` = 16 AND `deltime` = '' ORDER BY `sort` ASC LIMIT 0,8 [ RunTime:0.000519s ]
  8. SELECT * FROM `zzw_common_cat` WHERE `parent_id` = 14 AND `deltime` = '' ORDER BY `sort` ASC LIMIT 0,8 [ RunTime:0.000515s ]
  9. SELECT * FROM `zzw_common_cat` WHERE `parent_id` = 13 AND `deltime` = '' ORDER BY `sort` ASC LIMIT 0,8 [ RunTime:0.000501s ]
  10. SHOW FULL COLUMNS FROM `zzw_news` [ RunTime:0.001735s ]
  11. SELECT `n`.*,c.id as catid,c.catname as catname FROM `zzw_news` `n` LEFT JOIN `zzw_news_cat` `c` ON `n`.`catid`=`c`.`id` WHERE `n`.`id` = '12608' AND `n`.`deltime` = '' LIMIT 1 [ RunTime:0.000518s ]
  12. SELECT `id`,`catid`,`title`,`thumb` FROM `zzw_news` WHERE `id` > 12608 AND `deltime` = '' AND `catid` = 108 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000468s ]
  13. SELECT `id`,`catid`,`title`,`thumb` FROM `zzw_news` WHERE `id` < 12608 AND `deltime` = '' AND `catid` = 108 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000641s ]
  14. SELECT `id`,`catid`,`title`,`thumb`,`addtime`,`fbtime` FROM `zzw_news` WHERE `deltime` = '' AND `is_recommend` = 1 ORDER BY `id` DESC LIMIT 0,4 [ RunTime:0.003933s ]
  15. SELECT `id`,`catid`,`title`,`thumb`,`addtime`,`fbtime` FROM `zzw_news` WHERE `deltime` = '' AND `is_recommend` = 0 ORDER BY `id` DESC LIMIT 0,10 [ RunTime:0.000416s ]
  16. SHOW FULL COLUMNS FROM `zzw_news_cat` [ RunTime:0.001289s ]
  17. SELECT * FROM `zzw_news_cat` WHERE `parent_id` = 0 AND `deltime` = '' [ RunTime:0.000367s ]
  18. SELECT COUNT(*) AS think_count FROM `zzw_news` WHERE `deltime` = '' AND `catid` = 84 [ RunTime:0.026369s ]
  19. SELECT `id`,`catid`,`title`,`thumb`,`addtime`,`fbtime` FROM `zzw_news` WHERE `deltime` = '' AND `catid` = 84 ORDER BY `id` DESC [ RunTime:0.032236s ]
  20. SELECT COUNT(*) AS think_count FROM `zzw_news` WHERE `deltime` = '' AND `catid` = 85 [ RunTime:0.007181s ]
  21. SELECT `id`,`catid`,`title`,`thumb`,`addtime`,`fbtime` FROM `zzw_news` WHERE `deltime` = '' AND `catid` = 85 ORDER BY `id` DESC [ RunTime:0.007283s ]
  22. SELECT * FROM `zzw_config` WHERE `id` = 2 LIMIT 1 [ RunTime:0.000503s ]
0.130432s