Double row self-aligning ball bearings have a spherical raceway in the outer ring and a double raceway in the inner ring. This feature gives the bearings their self-aligning property, which permits angular misalignment of the shaft to the housing. They are, therefore, particularly suitable for applications where misalignments rise from errors in mounting or from shaft deflection.
Double row self-aligning ball bearings are mainly used to carry radial load and light axial load, but they can¡¯t carry pure axial load.
Double row self-aligning ball bearings of LEGEND standard design are available with a cylindrical bore or a tapered bore (taper 1:12). Double row self-aligning ball bearings can be directly located on the tapered journal with lock nut and can also be mounted on the cylindrical shaft with suitable adaptor or withdrawal sleeve. The internal radial clearance of bearings can be adjusted by adaptor sleeve. The cages of double row self-aligning ball bearings are provided with steel pressed cage. With the great development of engineering plastic industry, double row self-aligning ball bearings with glass fiber reinforced polyimide moulded cage can be provided. They can be used at higher operating temperature and have good prospects.
Type: cylindrical bore, tapered bore
Cage: pressed cage, solid cage