小滚珠，美国动画作品《变形金刚》里的角色，在《第二天》、《汽车人死里逃生》等剧集中有出场。
小滚珠的临界速度，也许是每秒几百米。
Well, this critical speed for a small ball bearing would be some hundred meters per second.
滚珠丝杠由于运动效率高、发热小，故可实现高速进给(运动)。
Ball screw due to high movement efficiency, small heat, it can achieve high-speed feed (motion).
机体轴承。镀镉钢的刚性单列滚珠轴承。0号和2号直径系列。小游隙类。尺寸和负荷。
Bearings, airframe rolling - rigid single row ball bearings in steel, cadmium plated - diameter series 0 and 2. reduced clearance category - dimensions and loads.
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