Borubutsushiyu

摘要

(57) [summary] The [purpose] processing easy to obtain a high accuracy of the ball bush. [Configuration] the needle 8 in parallel two to a portion of the loop groove 4 having an inner opening 6 and the outer peripheral opening form the trajectory of the ball 5. [Effect] high-precision machining parts is only the ball and needle, ball retainer, the outer tube is easier to process because it does not require precision, yet accuracy as a ball bush is higher.