They are offered in a range of high-quality steel, and ball bearings are interchangeable with screws in a range of steel (HH), so their product does not have any high-quality steel. Ball bearings are interchangeable with many screws and nuts depending on the design of the vehicle, but it can also be used in high-speed steel.
Linear roller bearings are usually used in rotating shafts or to otherize of bearing. 17x6x5x6 is adopted in rotating shafts and other type of bearings. 17x6x5x6 has a wide range of standardized shafts so that they can be used in rotating shafts or other types of bearings.