High-performance low-torque anti-friction bearing assembly

A heavy-duty anti-friction bearing assembly suitable for supporting a stabilized platform or the like with minimal torque losses under loads capable of causing distortion of said bearing assembly, including simultaneously occuring axial, radial and moment loads, comprising:

• a single forged alloy steel nose ring having an annular radial nose formed with arcuate raceways on the opposite lateral sides thereof;
• a single forged alloy steel cup ring concentric with said nose ring and formed with a pair of arcuate raceways converging toward a respective arcuate raceway on said nose ring and each of said arcuate raceways of said nose and cup rings having hardened surfaces;
• separate rows of balls mounted between an associated pair of raceways of said nose and cup rings including independently functioning spacer means in each of said rows of balls for maintaining adjacent balls spaced apart;
• and wherein
• the ratio of the diameter of said bearing assembly divided by the square root of the bearing assembly cross section having a value of at least 15.