What are the commonly used mininature bearings?

Mininature bearings refer to metric series with an outer diameter of less than 9mm; inch series, all kinds of bearings with an outer diameter of less than 9.525mm!

The main materials of mininature bearings are carbon steel, bearing steel, stainless steel, plastics, ceramics, etc. The smallest inner diameter can be 0.6mm, and the general inner diameter is 1mm.

Features of mininature bearings:
Among the ultra-small diameter mininature bearings, the types of miniature deep groove ball bearings include metric 68 series, 69 series, 60 series, etc. There are 6 types of 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 ring, Teflon bearing seal ring series and flange flange series, etc.

Commonly used models of mininature bearings:
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

The main purpose of mininature bearings:
Mininature bearings are suitable for all kinds of industrial equipment, small rotary motors and other high-speed and low-noise fields, such as:
Office equipment, micro motors, instruments, laser engraving, small clocks, soft drives, pressure rotors, dental drills, hard disk motors, stepping motors, video recorder drums, toy models, computer cooling fans, currency counters, fax machines And other related fields.

Because mininature bearings have different causes of heating, the solution is different. The following is the solution when the temperature of mininature bearings is overheated:
1. Grease filling method. The so-called grease filling method is to fill the working surface of the bearing with an appropriate amount of grease regularly, which is the most commonly used grease lubrication method.
2. Oil cup method. The oil cup method is to set a screw cap oil cup or a pressure oil cup on the bearing seat, rotate the cap regularly or use a grease gun to inject grease. This is also a commonly used grease lubrication method.
3. Pressure grease supply method. Pressure grease supply method relies on grease pump for grease supply. At this time, grease with good fluidity should be selected.
4. Centralized grease supply method. The centralized grease supply method supplies grease to various deep groove ball bearings and other parts at the same time through a grease pump. Similarly, at this time, the grease should be a grease with good fluidity, oxidation resistance and corrosion resistance, which is also a pressure grease method.

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