Isn’t all Hardened Steel Shafting the Same?

Every linear bearing application requires a linear shaft as the inner raceway. However, many times that inner race is overlooked in the design process because it is presumed to be part of the bearing solution. Other times it is merely considered insignificant. It is also the case that in the procurement stages, linear shafting is quite often thought to be a commodity; in other words, it’s all the same.