Rust Prevention Method For Installing Precision NSK Bearings

SKF 6202-2Z * bearing

For the installation of precision Japanese NSK bearing products, some things should be paid attention to after installation. If it is not installed properly, the life of Japanese NSK bearings will not be long. Therefore, if you want to install Japanese NSK bearings, you should know how to install Japanese NSK bearings yourself, so as to ensure that Japanese NSK bearings are damaged during the installation process. Let me introduce the comprehensive verification method of Japan NSK bearing installation accuracy:
Measure the size of the shaft and the Japanese NSK bearing housing hole to determine the matching accuracy of the Japanese NSK bearing. The matching requirements are as follows:
(1) The inner ring and the shaft adopt an interference fit, and the interference is 0～+4μm (0 under light load and high precision);
(2) The outer ring and the Japanese NSK bearing seat hole adopt clearance fit, the clearance amount is 0～+6μm (but when the free end Japanese NSK bearing uses angular contact ball bearings, the clearance can be increased);
(3) The roundness error of shaft and seat hole surface is 2μm
(4) The parallelism of the end face of the spacer ring used in Japanese NSK bearings is 2μm
(5) The runout between the inner end of the shaft shoulder and the outer end face is 2μm
(6) The runout of the shoulder of the Japanese NSK bearing seat hole to the axis is 4μm
(7) The inner end of the front cover of the spindle faces the axis with a runout of 4μm.