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选择深沟球轴承润滑脂要知道的事
Release time:2022-05-13
Author:
Shandong Ruiding Bearing LTD
选择深沟球轴承润滑脂要知道的事。近期,还是有人在采购轴承润滑脂的时候不清楚如何选择合适的轴润滑脂?从哪些方面进行选择轴承润滑脂,才能让滚动轴承获得更佳的润滑效果,使的滚动轴承在工作运转中发挥更强的性能。已知,轴承润滑脂由低粘度合成润滑油并添加有抗氧化、防锈蚀等多种添加剂配制而成的润滑油。那么如何选择合适的轴承润滑脂呢?从轴承润滑脂特征基本着手,其主要体现在一下三方面:
(1)基础油类型&黏度基础油的黏度影响着润滑膜的形成。常见的基础油是矿物油和合成油,前者是成本低的基础油,其生产过程与成本远比合成油简单低廉。
(2)稠化剂..稠化剂是润滑脂的重要组成部分,稠化剂分散在基础油中并形成润滑脂的结构骨架,使基础油被吸附和固定在结构骨架中。润滑脂的抗水性及耐热性主要由稠化剂所决定。
(3)添加剂.所有的润滑脂都含有添加剂。但有些添加剂是改善基础油本身的性能(抗氧化剂,黏度调整剂,清净剂等),有些则是对滚动轴承和金属表面起作用(如抗磨添加剂,抗蚀剂,减摩剂)。稠化剂和基础油的成分将润滑脂划分为不同的类型,不同的稠度用NLGI稠度号表示。稠度代表润滑脂的固态程度,原始的稠度数据是以金属锥体置于一罐润滑脂的表面,在25°C量测在5秒内沉入的深度,称为针入度或锥入度,数据为0.1毫米(例如:沉入25毫米,则纪录250),公认的测试标准有DINISO2137,ASTMD217
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