https://thk-iko-whcd.com/r40-16b2-fst-type-hiwin-precision-ground-ballscrews.html
R40-16B2 FST TYPE HIWIN PRECISION GROUND BALLSCREW - THK|IKO|HIWIN-WHCD Bearing
Jun 2, 2022 - FEATURES Low noise (lower 3~5dB than general series) Finest design of recirculation can absorb noise from the impact of balls to reduce noise level. Qualified...