ER Style Bearings

ER style bearings are insert bearings with an extended inner ring. They are specifically designed for mounting on shafts without using adapters, lock-nuts, or shoulders. They are popular in many applications due to their versatility, and cost effectiveness. The bearing is typically locked in place using setscrews (or a locking eccentric collar). The inner ring usually extends on both sides of the bearing to provide extra shaft support.

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AST’s ER Series insert bearings are typically used in applications in the following industries:

Agricultural
Conveyor / conveyance
Construction
Food and beverage processing
Packaging
Textile

AST’s ER Series Insert Bearings are available in both metric and inch bore dimensions (Note: Both metric and inch bore series have "metric" outer diameters). They accommodate standard shaft sizes from 12 mm to 60 mm and 1/2” to 1-7/8” respectively.

Miniature Insert Bearings Available

If you required insert bearings for smaller shafts with inch dimensions from 3/16" up to 1/2", please check out our Collar Clamp Ball Bearings, which are essentially miniature insert ball 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 ER Cartridge Ball Bearing Inserts?

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.

Value added services