NBK Made in Japan BRPMS-24-S Flange Type Ball Transfer Unit with Spring Plunger Function for Upward Facing ApplicationsBRPMS 24 S Flange Type Ball Transfer Unit with Spring Plunger Function for Upward Facing Applications Part Number M L s L1 L2 L3 D1 D Db P Withstand Load (N) BRPMS 24 S 24 x 1. 5 21. 5 3. 5 1. 5 12 2 28 20. 5 10. 32 23 24 55 is a flange type ball roller with spring plunger function for upward facing applications such as conveyance, fixing and locating work, torque limiting, and indexing. Because the body section is press fitted, height can be reduced.