miniature bearing

Small and miniature bearings, typically with an outer diameter of 9 mm or less, include ball bearings and cylindrical roller bearings. The most common type, the size of a coin, is the ball bearing. They are essential in precision machines needing low friction, high-speed rotation, and minimal vibration, often found in small motors, instruments, gyros, and cameras.

- Bearing specifications: Bearing numbers are international standards. Among the 5-digit numbers, one digit indicating the height (width) series is omitted, so it is generally divided into 4-digit numbers.

Learn about specifications

The first digit refers to the bearing type. The second digit refers to the outer diameter of the bearing, that is, the outer diameter (diameter) series.
The third and fourth digits indicate the inner diameter, which is the most important dimension of the bearing.
Except for the four numbers 00 (10mm), 01(12mm), 02(15mm), and 03(17mm), you usually use [number]*5.
You can find the inner diameter of that bearing.

Handling standards

- Handling small size (miniature) (bearings 605ZZ, 606ZZ, 607ZZ, 608ZZ, 609ZZ, 625ZZ, 626ZZ, 628ZZ, 629ZZ, 634ZZ, 635ZZ, 688ZZ, 689ZZ), etc.

- Handling manufacturers (SKF, FAG, INA, KBC, Timken, NTN, KOYO, NSK, KOYO), etc.

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