The linear recirculation ball bearing rail is adopted, gothic arc-grooves are
designed in the upper and lower bench surfaces of the main body, and each of
them is composed of double arch grooves. The steel balls moving in a single
groove are of a two-point contact structure, and there are four contact points in
the double arc grooves totally. All the above form a secure bench structure；
The ball screw drive is adopted, and the rolling contact between the nut and the
screw is achieved through steel balls, which can ensure a high positioning
accuracy and a long service life. Besides, the high-speed forward and reverse drive
as well as converted drive can also be realized in the product；
The materials are stainless steel and carbon steel.
