Introduction of Good Spherical Roller Bearings

Introduction of Good Spherical Roller Bearings

Good spherical roller bearings are bearings with drum rollers assembled between an inner ring with two raceways and an outer ring with spherical raceways. High Quality spherical roller bearings have two rows of rollers, which mainly bear radial loads, as well as axial loads in either direction. It has high radial load capacity, especially suitable for working under heavy load or vibration load, but cannot bear pure axial load. The outer ring raceway of this type of bearing is spherical, so its self-aligning performance is good, and it can compensate for the coaxiality error.

Good spherical roller bearings are equipped with drum-shaped roller bearings between the inner ring with two raceways and the outer ring with spherical raceways. The center of curvature of the outer ring raceway surface is consistent with the center of the bearing, so it has the same self-aligning function as the self-aligning ball bearing. When the shaft and housing are deflected, the load can be automatically adjusted and the axial load in two directions. Large radial load capacity, suitable for heavy loads and shock loads. The inner diameter of the inner ring is a bearing with a tapered bore, which can be directly mounted.

For the installation axial clearance of the good spherical roller bearing, the adjustment nut on the journal, the adjustment washer and the thread in the bearing seat hole can be used, or the preload spring can be used to adjust. The size of the axial clearance is related to the arrangement of the bearing during installation, the distance between the bearings, and the material of the shaft and the bearing seat, which can be determined according to the working conditions. For spherical roller bearings with high load and high speed, when adjusting the clearance, the influence of temperature rise on the axial clearance must be considered, and the clearance reduction caused by temperature rise must be estimated, that is, the axial clearance The gap should be appropriately adjusted to be larger. For low-speed and vibration-bearing bearings, clearance-free installation or preload installation should be adopted. The purpose is to make the rollers and raceways of spherical roller bearings have good contact, distribute the load evenly, and prevent the rollers and raceways from being damaged by vibration and impact. After adjustment, check the axial clearance with a dial gauge. The method is to fix the dial indicator on the fuselage or bearing seat first, so that the dial indicator contact can withstand the smooth surface of the shaft, and push the shaft left and right along the axial direction. The maximum swing of the dial is the axial clearance value.