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Self-Aligning Ball Bearings

Self-Aligning ball bearings have two rows of balls, a spherical raceway located in the outer ring, and two deep raceway grooves in the inner ring. The raceway in the outer ring along with the two rows of balls helps to work over a vast range of contact angles. These bearings align themselves accurately with the shaft and assembly without causing tension on the rest of the bearing assembly. This type of bearing is recommended when the alignment of the shaft and housing is difficult as the shaft may flex. The outer ring has a spherical raceway and its center of curvature coincides with that of the bearing. This gives the axis of the inner ring, balls, and cages an area of deflection. The following are some key considerations and benefits of self-aligning ball bearings:

  • Low friction
  • High-speed performance
  • Low noise
  • High-grade balls and high-quality steel
  • Accommodate static and dynamic misalignment
  • Low maintenance
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The size and width of these bearings may also vary according to their use and application. These bearings mostly are for general use. Self-aligning ball bearings can be open or sealed. The design of the bearings permits them to be used in difficult applications. They are often used in textile mining industries, agriculture, heavy machinery, power machinery, and medical devices. Pressed steel, bronze, and polyamide cages are normally used. Since the contact angle is small, the axial capacity will be as well. Available in both the cylindrical and tapered bore, the permissible misalignment has a range of 4 to 7 degrees under normal loads. Self-aligning ball bearings also come in three series, which are the 1200, 1300, and 2200.

As a major ball bearing distributor, MMB Bearings offers a wide variety of ball bearings to suit virtually any application. MMB Bearings stocks the following brands of Self-aligning ball bearings:

Brands Available

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Over 100 years of combined experience

About MMB Bearings

MMB Bearings has grown from a small supplier of precision miniature bearings, to one of the nation’s largest stocking distributors and suppliers of high-quality ball and roller bearings. Our bearings are stocked in a climate controlled warehouse to ensure our inventory maintains high quality standards. We take great pride in the knowledge and service we provide. You'll find precisely what you need from one source with ready-to-ship inventory in large quantities of domestic and imported ball, roller, needle and rod end bearings.

Certifications & More About MMB
Double Row Self Aligning Bearing