40TAB07U P4 Nachi Ball Screw Support Bearing Universal Ground Type 40mm x 72mm x 15mm Made in Japan 40TAB07U 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, 40TAB07U supports precision actuators in a wide range of applications such as machine tools, precision measuring equipment, and robot technologies, Made in Japan.