ProSource is proud to carry a wide selection of FAG self-aligning ball bearings for purchase. Bore types include cylindrical, round, straight, and tapered. Closure type choices include double sealed, open, none, and more. A variety of outside diameters, widths, and internal clearance choices are available.
FAG has developed special self-aligning ball bearings as a substitute for spherical roller bearings. These bearings produce less friction and consequently less heat so that they meet the special requirements of this application better than the previously used spherical roller bearings.
What are FAG self-aligning bearings?
Self-aligning ball bearings are double row, self-retaining units comprising solid outer rings with a concave raceway, inner rings with a cylindrical or tapered bore and ball and cage assemblies
FAG self-aligning ball bearings are best suited for the special requirements of this application such as compensation of misalignment, minimal revolving masses and low friction. Today, self-aligning ball bearings in six sizes are available for guide rolls.
How do FAG self-aligning bearings work?
The central roll segment is supported by the shaft and the two outer segments are adjusted laterally. The deflection of the shaft causes the bearing’s inner ring to tilt. At the same time, the roll shell tilts as well, although more slightly. This results in a 0.5° tilt of the inner ring relative to the rotating outer ring (dynamic misalignment).
While the rolling elements are rolling in a circumferential direction they must simultaneously shift axially in the outer ring raceway. These axial sliding effects are compensated more smoothly by the self-aligning balls than by barrel rollers.
How are FAG self-aligning bearings lubricated?
The self-aligning ball bearings are lubricated with low-friction grease, which also contributes to a reduction of the overall friction. Re-lubrication is effected through the lubricating groove and the six lubricating holes in the stationary inner ring and supplies fresh grease directly to the contact areas in the bearings. Large amounts of grease can be stored in cavities on both sides of the bearings.