Three Bolt Flanges

Three Bolt FlangesBearings that are mounted within a flanged housing are used when the bearing mounting surface is perpendicular to a shaft axis. They are commonly available in two, three, or four-hole configurations.  Three-bolt flanged ball bearing units have a round shape with 3 holes for mounting. As with our 2-Bolt Flanged Bearing Units and our 4-Bolt Flanged Bearing Units, the 3-bolt flanged bearing units have bearings that can be moved and aligned to better accomodate long shafts.

Standard housings from AST Bearings include both cast iron and thermoplastic materials and come with built-in grease nipples.

Three Bolt Flanges - Standard and Thermoplastic Series - Inch and Metric

  • Inch Series - FB, F3X and BF Inch Series:
    • Inch Dimensions
    • 1/2" to 2" Shaft Diameters
    • Cast Iron and Stamped Steel Housings
  • Metric Series - FB, F3X and BF Metric Series:
    • Metric Dimensions
    • 12 mm to 50 mm Shaft Diameters
    • Cast Iron and Stamped Steel Housings

Other types of 3-bolt flange ball bearings can be special ordered to meet your specific requirements. If you don't see it in our catalog, just ask us for it.

How to Select and Order 3-Bolt Flanges

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.

Click here to go to our online catalog and product specifier for 3-bolt flanges including free 3D CAD model downloads.

Three-Bolt Flange Ball Bearing Catalog & CAD Library



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

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