https://www.vxolinearmotion.com/products/precision-bearings/
High precision bearings are utilized in applications where superior accuracy, reliability of operation, high running speeds, long life, rigidity and limiting of noise and vibration are critical. Super precision ball bearings are utilized on machine tools, such as turning centers, milling, grinders, machining centers and to support ball screws. Other precision bearing applications include aircraft, medical equipment and robotics.
Warning: Not suitable for young readers or sensitive minds. Contains graphic sex scenes, adult language and situation intended for mature readers only.
So basically this story is not for everyone, this is R18!! if you're 17 below, please find another story because this is not suitable for you.