Official Answer
Answer
Bearing preloading often utilizes single-turn wave springs to take up axial play. The load $P$ at a given deflection $f$ is $P = _x000c_rac{f E b t^3 N^4}{0.583 D_m^3}$. For high-speed applications, the preload must be sufficient to prevent ball skidding, which occurs if $P < P_{min}$. $P_{min}$ is typically defined by the bearing manufacturer based on the kinematic friction of the lubricant. If the spring rate is too high, it leads to excessive heat generation and reduced bearing life. Using materials like Beryllium Copper (CuBe) provides high conductivity and corrosion resistance while maintaining a stable spring rate across varying temperatures in medical imaging equipment.
