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NSK轴承安装注意事项

来源:skf轴承 时间:2021-05-20

NSK轴承安装是否正确将直接影响轴承在使用过程中的精度、寿命和性能。

(1)清洗大量NSK轴承时,首先使用温度为90~100℃的热机油熔化封装油。与此同时,使用一个无缝和无屑的工具挖出所有的旧油,然后焯几分钟。然后用煤油冲洗,除去机油,最后再用汽油清洗。清洗后,戴上薄膜手套,将NSK轴承放在工作台上的干净布或纸上晾干。

  (2) Before the NSK bearing is installed, you should use appropriate measuring tools to check the machining quality of the shaft, seat hole and related parts (such as dimensional accuracy, shape accuracy, surface roughness, etc.) according to the technical requirements on the design drawings.

  (3) Open the NSK bearing package before installation, immerse it in the above-mentioned gasoline and other liquids and rotate it gently by hand to ensure that the cage, rolling elements and the sealing oil on the surface of the raceway are thoroughly cleaned.

  (4) The assembly surface should be cleaned with clean gasoline, kerosene, toluene or xylene and other solutions, and dried with a clean cloth, and then coated with a thin layer of lubricating oil, which will make the installation and operation more convenient.

  (5) Note that NSK bearings with seals cannot be cleaned by this method, and the inside of the seal should be kept intact and cannot be cleaned.

  (6) If there are bumps, burrs, rust spots or solid particles (such as abrasive debris, sand, mud) on the assembly surface of the shaft and the bearing seat hole, it will not only make the installation of the NSK bearing difficult and make the installation position incorrect, but also If solid particles fall into the NSK bearing, it will have a grinding effect. When the NSK bearing rotates, it will scratch or scratch the working surface of the NSK bearing. Therefore, it must be carefully checked before installation. If the above defects are found, they should be corrected. . For example, use an oil file to remove burrs, raised bumps, and rust spots, and polish with a fine emery cloth. Another example is to clean solid particles and dirt.

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1.使用铜棒和手动攻丝安装

这是安装中小型NSK轴承的一种简单方法。当轴承的内圈紧密配合和外环有一个宽松的适合,把铜杆的端面轴承的内圈,直接用锤子敲铜杆,将强行通过铜杆慢慢安装轴承在轴上。当轴承的内圈较大时,可以使用铜杆均匀地围绕轴承的内圈端面打击。不要只打击一侧或过度用力。对称击球,轻轻击球,缓慢安装,避免斜击。

2.使用套筒进行安装

此方法与使用铜棒安装NSK轴承相同。它将套筒直接压在轴承的端面上(当轴承安装在轴上时压内圈的端面;紧迫的外环的端面安装在房屋洞),和手锤的突击部队可以均匀分布在安装整个环的端面上的轴承可用于配合出版社,在安装节省劳动力和时间,质量可靠。用于安装的套管应采用软金属(可采用铜管或低碳钢管)。如果轴承安装在轴上,套管的内径应略大于1-4mm》杂志和外径应略小于肋轴承内圈的直径,或套管的厚度应与轴承内圈的厚度相同。2/3 / 4/5,套筒两端应平整,与筒体垂直。如果轴承安装在阀座孔内,套筒的外径应略小于轴承的外径。

3.还有一种压入方法

安装压力应直接施加到过盈配合的NSK轴承环的端面上,否则会对轴承工作表面造成挤压,导致轴承迅速损坏。

4.供暖装置

对于安装NSK轴承或有大干涉的大尺寸轴承,为了便于安装,可采用热胀冷缩的原理,在油罐加热后用铜棒、套筒和手锤安装轴承。加热时温度一般控制在100℃以下,80-90℃较为合适。当温度过高时,容易引起轴承套圈滚道和滚动元件的退火,从而影响硬度和耐磨性,导致轴承寿命减少和过早报废。

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