Gd linear ball bearings ( drawn cup recirculating ball linear bearings ) are made of punched and quenched outer ring and plastic cage with a set of rolling ball gd直線運(yùn)動(dòng)球軸承(沖壓外圈循環(huán)式直線運(yùn)動(dòng)軸承),由一沖壓且淬硬的外圈和帶一組鋼球的塑料導(dǎo)引保持架所構(gòu)成一完整的裝配單元,可直接壓入座孔內(nèi)。