What preparations need to be done before installation of NTN cylindrical roller bearings

(1) Before the installation of the ntn bearing.com/cylindrical-roller-bearings.html' target='_blank'>cylindrical roller bearing, appropriate measuring tools should be used to check the processing quality of the shaft, seat hole and related parts (such as dimensional accuracy, shape accuracy and surface roughness, etc.) according to the technical requirements on the design drawings. ). (2) If there are bumps, burrs, rust spots or solid particles (such as wear debris, sand, mud) on the assembly surface of the shaft and the bearing seat hole, it will not only make the installation of the ntn cylindrical roller bearing difficult and make the installation position inaccurate Correct, and if solid particles fall into the ntn cylindrical roller bearing, it will play a grinding role. When the ntn cylindrical roller bearing rotates, it will wear or scratch the working surface of the ntn cylindrical roller bearing, so it must be carefully installed before installation. To be checked, if found to have the above defects, should be corrected. For example, use an oil file to remove burrs, raised bumps, and rust spots, and polish them with a fine emery cloth, or clean solid particles and dirt. (3) The assembly surface should be cleaned with clean gasoline, kerosene, toluene or xylene and other solutions, dried with a clean rag, and then coated with a thin layer of lubricating oil, which can make the installation operation more convenient. (4) Open the ntn cylindrical roller bearing package when it is temporarily installed, immerse it in the above-mentioned gasoline and other liquids and rotate it gently by hand, and ensure that the cage, rolling elements and the package oil on the surface of the raceway are thoroughly cleaned. (5) When cleaning a large number of ntn cylindrical roller bearings, first scald with hot oil with a temperature of 90-100 ℃ to melt the package oil, and at the same time dig out all the old oil with a tool that is seamless and does not fall off debris, and then scald for a few minutes, then rinse with kerosene to remove the oil, and finally with gasoline. After cleaning, wear film gloves and place the ntn cylindrical roller bearing on a clean cloth or paper on the workbench to dry. (6) Note that the sealed ntn cylindrical roller bearing cannot be cleaned by this method, and the inside of the seal should be kept as it is and cannot be cleaned.

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