Ball Bearings

Angular Contact Ball Bearings

Due to their internal design, angular contact ball bearings can withstand high radial-axial loads and reach high speeds. They are asymmetrical for manufacturing reasons and can withstand unidirectional axial loads only. Angular bearings are usually mounted in a group of two or more opposed preloaded units with rigid or elastic spacers. Typically, the inner and outer raceways and balls are made of chrome steel. Where operating conditions are severe, bearings may have ceramic balls creating a hybrid bearing.

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Single Versus Double Row Angular Contact Ball Bearings

As previously mentioned, angular contact bearings are usually mounted in a group of two or more opposed preloaded units with rigid or elastic spacers. This can be done by matching up multiple single row bearings or by utilizing double row angular contact bearings which may offer some econmic benefits. However, utilizing multiple single sow angular contact ball bearings can offer greater design flexibility and performance in many cases.

Tremendous Selection of Angular Contact Bearings from AST

AST supplies more than 550 single-row, precision, Angular Contact Bearings in its online catalog with bores ranging from as small as 10.0 mm and as large as 280 mm. Standard contact angles of deflection include 15, 20, 25, 30, and 40 with other custom angles available to meet special applications. Furthermore, ceramic and special SV30 stainless steel materials are also available to maximize performance.

Angular Contact Ball Bearing Series

any angular contact bearing manufacturers have three or more dimensional series to accommodate higher speeds or higher loads than “standard.” In particular, the most common series names are:

ISO 18 Series - highest speed, lowest load bearings
ISO 19 Series - second highest speed, with the second lowest load bearings
ISO 10 Series - highest load, second lowest speed bearings
ISO 02 Series - highest load, lowest speed bearings

ISO Equivalents To AST's Series Designations

Many times, manufacturers have further separated the ISO dimensional classes by adding a higher speed variant with the same dimensions. The following table summarizes AST's product offerings:

ISO Series	AST Designation
ISO 18	718 Series Angular Contact Bearings
ISO 19	719 Series Angular Contact Bearings
ISO 19 (High Speed)	H719 Series Angular Contact Bearings
ISO 10	70 Series Angular Contact Bearings
ISO 10 (High Speed)	H70 Series Angular Contact Bearings
ISO 10 (High Load)	B70 Series Angular Contact Bearings
ISO 02	72 Series Angular Contact Bearings

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

Need Assistance Selecting the Proper Angular Contact Bearing?

If you need help in selecting the best products for your particular application, please remember that design engineering and application assistance are available from AST as part of our value-added services designed to make your job easier.

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