1. Product Overview 1. Product Overview The MR148 thin-wall miniature deep groove ball bearing is open-type without seals, standard metric micro size 8×14×3.5mm. It features ultra-light weight, ultra-low friction and super high limiting speed, bears radial load and slight bidirectional axial load, widely matched to drone motors, miniature stepping motors, optical precision instruments and small electronic rotary components.👉 Get a quote within 24 hours for your project 2.