1.Product Overview The 628/8R-2Z miniature deep groove ball bearing is equipped with double-sided ZZ metal dust shields, standard micro dimension 8×16×5mm. It features compact thin structure, low friction and stable high-speed rotation, can bear radial load and slight bidirectional axial load. Double steel shields block fine dust and particles, suitable for micro motors, model equipment, small cooling fans and miniature precision instruments. 👉 Get a quote within 24 hours for