Ultra-miniature bearings refer to: metric series 1-9mm and inch series 1.984-12.7mm miniature bearings.

The main materials are bearing steel, stainless steel, ceramics, etc.

In the ultra-miniature bearing with ultra-small bore, the main bearing types are metric 68 series, 69 series, 60 series, etc., and there are 6 types of inch R series. On this basis, it can also be divided into bearing series with ZZ stainless steel dust cover , Miniature bearing series with RS rubber seal ring, Teflon bearing seal ring series and flanged rib series, etc.

Ultra-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, instrumentation, laser engraving, small clocks, soft drives, pressure rotors, dental drills, hard drives Motors, stepping motors, video recorder drums, toy models, computer cooling fans, money counters, fax machines and other related fields.