Q6. Does A Higher ABEC Rating Mean A Quieter Bearing?

While there may be a loose correlation between ABEC precision ratings and noise, higher ABEC ratings to not always mean a quieter bearing. ABEC ratings do not specify many other critical factors, such as smoothness of the rolling contact surfaces, ball precision, and material quality all which may affect noise.

Another major factor affecting noise performance is the lubricant type. For very quiet running, the selection of a quiet grease is very important. Handling, installation and correct preloading will also ensure the quietest possible operation.

See AST's white paper on this subject for an indepth discussion on closures entitled, "Bearing Tolerances and Precision Levels - ABEC Tolerances."


Did we miss something?  If you have another question for us, just let us know and we will do our best to provide you a prompt and accurate answer.  AST Bearings provides "value beyond the part."


AST Bearings is proudly presenting our new certificates for both the NJ and CA locations: AST Bearings’ ISO 9001:2015 Certificates

To learn more about what the ISO 9001 standard is, the differences between the 2015 and 2008 versions, and how AST verifies customer satisfaction: Learn About AST Bearings’ certification to ISO 9001:2015

Request a Quote Online Catalog Videos Resource Center

Ask A Question

Fields marked with * are required.

First Name*: Last Name*: Company*: Phone: Email Address*: Zip Code*: State/Province:
Web Ad
Web Search
Design News
Design World
E-mail Campaign
NASA Tech Briefs
New Equipment Digest