Miniature bearings refer to the metric series, the outer diameter is less than 9mm; the inch series, all kinds of bearings with the outer diameter less than 9.525mm! The main materials are carbon steel, bearing steel, stainless steel, plastic, ceramics, etc., of which the inner diameter can be ≥0.6mm, and the general inner diameter is 1mm.

Among the ultra-small bore miniature bearings, the types of miniature deep groove ball bearings include metric 68 series, 69 series, 60 series, etc., and there are 6 inch R series. On this basis, they can also be divided into ZZ steel plate dustproof Cover bearing series, miniature bearing series with RS rubber seal, Teflon bearing seal series and flanged rib series, etc.

目前常用型号有：682 682ZZ MR52 MR52ZZ 692 692ZZ 683 683ZZ MR83 MR83ZZ 693 693ZZ 603 603ZZ 623 623ZZ MR74 MR74ZZ MR84 MR84ZZ 684 684ZZ MR104 MR104ZZ 694 694ZZ 604 604ZZ 624 624ZZ MR85 MR85ZZ MR95 MR95ZZ MR105 MR105ZZ 685 685ZZ MR115ZZ 695ZZ 605ZZ 625ZZ MR106 MR106ZZ MR126 MR126ZZ 686 686ZZ 696ZZ 606ZZ 626ZZ MR117 MR117ZZ MR137 MR137ZZ 687 687ZZ 607ZZ 627ZZ MR128 MR128ZZ MR148 MR148ZZ 688 688ZZ 698ZZ 608ZZ MR149 MR149ZZ 689 689ZZ 609ZZ 629ZZ 639ZZ等。

Miniature bearings are suitable for all kinds of industrial equipment, small rotary motors and other fields with high speed and low noise, such as:

Office equipment, micro motors, instruments, laser engraving, small clocks, soft drives, pressure rotors, dental drills, hard disk motors, stepping motors, video drums, toy models, computer cooling fans, money counters, fax machines and other related fields.