NACHI self-aligning ball bearing

Self-aligning ball bearings are bearings equipped with spherical balls between the inner ring of two raceways and the outer ring of which the raceways are spherical.

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, they can be adjusted automatically without increasing the bearing burden. Spherical roller bearings can withstand radial loads and axial loads 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. Or install it on the cylindrical shaft using an adapter sleeve and a dismantling sleeve. The cages use steel stamping cages, polyamide forming cages and copper alloy turning cages.

The self-aligning ball bearing has two structures of cylindrical hole and conical hole, and the material of the cage is steel plate, synthetic resin, etc. Its characteristic is that the outer ring raceway is spherical, with automatic centering, which can compensate for the errors caused by non-concentricity and shaft deflection, but the relative inclination of the inner and outer rings should not exceed 3 degrees.

It can bear large radial load and also bear certain axial load. The outer ring raceway of this type of bearing is spherical, so it has self-aligning performance. When the shaft is bent or tilted under force, so that the relative inclination of the center line of the inner ring and the center line of the outer ring does not exceed 1°~2.5°, the bearing can still work. .

The inner hole of self-aligning ball bearing has two types: cylindrical and conical. The taper of the conical bore is 1:1 2 or 1:30. In order to enhance the lubricating performance of the bearing, an annular oil groove and three oil holes are machined on the outer ring of the bearing.