17TAB04DU P4 Nachi Ball Screw Support Bearing Universal Ground Type 17mm x 47mm x 30mm Made in Japan 17TAB04DU P4 Nachi Ball Screw Support Bearing, bearing is Universal Ground Type and This permits the use of random combinations where two or more bearings are mounted, Bearing has the ability to achieve high precision and high performance on your applications, 17TAB04DU supports precision actuators in a wide range of applications such as machine tools, precision measuring equipment, and robot technologies, Made in Japan.