Abecprecision - Glossary - Technical

Glossary - ABEC Precision Grade

The ABEC Precision Grade is a scale of tolerances to which precision bearings are manufactured. The scale range is 1, 3, 5, 7 and 9, with 9 being the highest grade. High rated bearings are intended for precision applications like aircraft instruments or surgical equipment. Lower grades are intended for the vast majority of applications such as vehicles, mechanical hobbies, skates, fishing reels and industrial machinery. High ABEC rated bearings allow optimal performance of critical applications requiring very high RPM and smooth operation. High ABEC rated bearings do not make equipment go faster or smoother, they allow high precision equipment to operate at their optimum speed and efficiency.

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You can find many precision bearings in the Bearing Shop Online Precision Bearings Online Catalogue pages.


The Small Parts and Bearings has a much larger range of engineering supplies.

Hobby and Engineering Supplies lists a smaller range of products and only the most popular items in each range. They also list many additional hobby specific categories.

For the best range of miniature and small bearings please try the Miniature Bearings Australia website. Miniature Bearings Australia also list a large variety of miniature engineering products.



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