Koyo bearing high temperature measurement dimensions of work before installation

Koyo bearing ring circumferential surface should have good bearing and force uniform, in order to reduce the deformation, and can give full play to the high temperature of bearing capacity. Ring in its surface can't slide along the tangent direction, otherwise it will damage the mating surface. Freedom end bearing must be able to adapt to changing with the length of the shaft and bearing seat holes, which must have to adapt to the axial location within a certain range of swimming ability. Must pay attention to the bearing installation and easy disassembly, saving time and expenses for the province. Koyo bearing inside diameter: before measuring the bearing must be installed by the regulation combined torque tighten high temperature bearing cap bolts by the regulation, with inner scale, colonel in outside micrometer to measure after the benchmark size, measurement to avoid thinned area. Bearing inside diameter and the corresponding value is the difference between the axis neck diameter size fit clearance. Main bearing hole of the coaxial degree: main bearing hole of the alignment error is mainly the bearing hole of the alignment error, and the causes of bearing hole alignment error is the deformation of the cylinder block. When the main journal radial circular runout tolerance, check the main journal and eat and impressions of koyo bearing, imprint together if the way the Lord high temperature bearing edible position clear, shows poor alignment error is big, can be used for skiving, boring bearing or changing the solution to such as cylinder block, otherwise difficult to guarantee the normal work of the engine 1, before the koyo bearing installation, should be the first to use the appropriate measurement tools, according to the requirements of the offer bearing drawings and mechanical parameters, check the bearing hole and the processing quality, identify authenticity, such as the precision of size, shape, roughness, workmanship bearing model is used to determine whether to apply, please immediately to determine if found not match models do not pretending to be replaced, directly cause serious mechanical scrap. 2, shaft and bearing assembly on the surface of the hole, if any, burr, rust, or solid particles ( Such as debris, sand, soil) , the existence, not only make it difficult to install bearing installation position is not correct, such as high temperature bearing can fall down solid particles of abrasive, koyo bearing rotates or bruises will wear of bearing working surface, so you must carefully check before installation, if you find these defects, should be modified. Such as use oil to remove burrs for the record, and puts forward the crocus cloth touch, rust, and Poland, if solid particles, clean dirt 3, should be used when cleaning on the surface of the installation of gasoline or xylene cleaning, can use the clean cloth, coated with ten percent thin oil, so that we can clear the hum of clean and simple. Four, open the temporary installation package high temperature bearings, it was immersed in gasoline and other liquid hand gently rotating, to ensure that the cage, rolling element and raceway, to thoroughly clean the oil level. 5, cleaning bearing, at the time of cleaning koyo bearing should be with 90 ° to 100 ° of hot oil first melt, let packaging and chips to take off the net and tools seamlessly don't dig old oil, then pour hot a few minutes, and then with kerosene, gasoline, and then rinse clean. After cleaning, should be put on the gloves, bearing in dry clean cloth or paper on the table. 6, pay special attention to here, absolutely can't take the seal of the high temperature bearing to clean, sealed room should remain the same, not clear.