20шт 684zz high speed ​​tools deep groove с двойным экранированием миниатюрный шаровой подшипник

deep groove ball bearings are one of the most widely used rolling bearings. they are used to accommodate radial and axial loads in both directions. made of durable carbon steel material, more strength and long use life. small friction and high-limit speed, very practical. suitable for all kinds of industrial equipment, micro motor, small rotary motor, office equipment and so on.