What is a Miniature Bearing?

Source: China Bearing Network | Time: 2013-05-23

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Miniature bearings are small but essential components used in various applications where space and performance are critical. These bearings are designed for high-speed operation, low friction, minimal vibration, and quiet performance. Due to their compact size and precision engineering, they are widely used in modern devices that require miniaturization, weight reduction, and thin-wall construction. They come in a variety of types, including ultra-small bore bearings with inner diameters as small as 2mm or less. Common series include the metric 68, 69, and 60 series, as well as the British R series. Additional options such as ZZ steel shields, RS rubber seals, Teflon seals, flange versions, stainless steel models, and ceramic ball variants are also available to suit different environmental and operational needs. Miniature bearings are commonly found in industrial equipment, small DC motors, dental drills, hard disk drives, video recorders, toy models, and computer fans. Their versatility makes them an important part of many mechanical systems where space is limited but performance must remain high. Here is a comparison of some common miniature bearing types: - 241.2 vs 2422 - 251.5 vs 1000082682 - 252 MR52 - 252.32.3 vs 682ZZ - 252.52.5 vs 2080082MR52ZZ - 262.3 vs 1000092692 - 2633 vs 692ZZ - 262.52.5 vs MR62ZZ - 262.82.8 vs 2080092 - 263.53.5 vs 3080092A - 272.52.5 vs 80062MR72 - 2733 vs MR72ZZ - 272.8 vs 602 - 273.5 vs 602ZZ - 2.551.5 vs MR72X - 2.552.32.3 vs MR72XZZ - 2.561.8 vs 100008/2.5682X - 2.562.52.5 vs 208008/2.5 - 2.562.62.6 vs 682XZZ - 2.572.52.5 vs 108009/2.5692X - 2.573.53.5 vs 692XZZ - 2.58.5 vs MR82X - 2.5833 vs MR82XZZ - 2.582.8 vs 602X - 2.5844 vs 602XZZ - 362 vs MR63 - 362.52.5 vs MR63ZZ - 372 vs 1000083683 - 372.52.5 vs 2080083 - 3733 vs 683ZZ - 382.5 vs MR83 - 3833 vs MR83ZZ - 383 vs 1080093693 - 3844 vs 2080093693ZZ - 392.5 vs MR93 - 3944 vs MR93ZZ - 393 vs 13603 - 3955 vs 80013603ZZ - 3102.52.5 vs 8080023 - 31044 vs 80023623ZZ - 31355 vs 80033633ZZ - 472 vs MR74 - 472.52.5 vs MR74ZZ - 482 vs MR84 - 4833 vs MR84ZZ - 492.5 vs 1000084684 - 4933 vs 2080084 - 493.53.5 - 4944 vs 684ZZ - 4103 vs MR104 - 41044 vs MR104ZZ - 41144 vs 1080094694ZZ - 41155 vs 2080094 - 41244 vs 80014604ZZ - 41355 vs 80024624ZZ - 41655 vs 80034634ZZ - 582 vs MR85 - 582.52.5 vs MR85ZZ - 592.5 vs MR95 - 5933 vs MR95ZZ - 5103 vs MR105 - 51044 vs MR105ZZ - 5113 vs 1000085685 - 5113.53.5 vs 2080085 - 51144 vs 3080085KMR115ZZ - 51155 vs 685ZZ - 51344 vs 1080095695ZZ - 51355 vs 2080095 - 51355 vs 2080095 - 51366 - 51455 vs 80015605ZZ - 51655 vs 80025625ZZ - 51966 vs 80035635ZZ - 6102.5 vs MR106 - 61033 vs MR106ZZ - 6123 vs MR126 - 61244 vs MR126ZZ - 6133.5 vs 1000086686 - 61344 vs 2080086 - 61355 vs 686ZZ - 61366 - 61555 vs 1080096696ZZ - 61566 vs 2080096
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