Self-aligning ball bearings Include two rows of balls, the cage, the inner ring, and the outer ring with a common concave sphered raceway. Self-aligning ball bearing have a sphere raceway in the outer ring and a double raceway in the inner ring. This feature give the bearings their self-aligning property, permitting angular misalignment of the shaft relative to the housing. Ball bearings are therefore particularly suitable for applications where misalignment can arise from errors in mounting or from shaft deflection. Double row self-aligning ball bearings are mainly used to carry radial loads and light axial loads, but cann't carry pure axial loads.
Mainly bear radial load, and can bear smaller axial load. Axis (shell) axial displacement limit in the clearance limits, the heart performance is automatically adjusted, normal work allows the inner and outer relatively small tilt conditions, suitable for bearing hole can not strictly ensure the concentricity. Self-aligning ball bearings are consequently self-aligning and insensitive to shaft deflections and angular misalignment of the shaft relative to the housing, It is particularly suitable for applications where considerable shaft deflections or misalignment are to be expected.
Self-aligning ball bearings have a common sphered raceway in the outer ring. This feature allows angular misalignment of the shaft relative to the housing. Therefore self-aligning ball bearings are particularly used in case of bearings where misalignment can occur from errors in mounting or from shaft bending.
Retainers are mainly made of steel sheet, synthetic resin, nylon etc. Its feature is the outer ring raceway spherical surface and automatical adjusted, so it can compensate for the deviation caused by different axial angle.
Nylon Cage ATN Self-aligning ball bearing
Iron cage Self-aligning ball bearing
Owning to its specific structure, the self aligning ball bearing can be used in some relative field and some general lines.For example, Self-aligning ball bearing applies to carry heavy load and impact load. Mine machine, port hoisting machine, port transfer equipment.
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