Commercial Solutions Bearing Interchange

Double Row Angular Contact Bearings

This comparison will help you properly select a substitute bearing for most applications. You can click the series title below to view the entire list of interchange data for a series; you may also select a specific bearing number from the pull-down menus to skip right to that bearing in the chart.

Interchange Comparison

Click any of the below numbers to view their info. Click the TOP OF PAGE bar to return to the menu.

The most important questions to ask when slecting bearings:

1. Part Number
2. Manufacturer
3. Filling Slots

Keep in mind a sealed and/or shielded bearing can have filler slots hidden behind the shield or seal.

The industry is of the opinion that on most applications you can get by with offering the standard Conrad style bearings available on the market today because they have higher load ratings than the Conrad loaded bearings of the mid- to late-80s.

Note: If you were to guess and supply a Max loaded bearing on an application with high speed and high thrust in one direction this could cause major problems.

Rules to Follow

• Rule Number One

  Never guess.

• Rule Number Two

  Quick Reference 5200/5300 Series New Departures
  (Discontinued)

  On problem applications or critical pump applications, go back to the original parts list to see what bearing the machine was built with.

  Note: Some older manuals will specify a bearing which is no longer manufactured; refer to our Quick Reference chart of New Departure Bearings for help with this.

• Rule Number Three

  Use the following pages as a guide but feel free to get more specific and consult with your a bearing vendor or bearing manufacturer. For enquiries, please contact your nearest Commercial Solutions branch, or email (info@csinet.ca).

Important Factors

The following factors are important and they are all listed in the following pages for each bearing size:

• Conrad Type Versus Max Type (No filling slot versus filling slot)
• Contact Angle
• Cage Design and Materials
• Internal Clearance

contact angles

Most contact angles are externally converging, which offers a slightly more stable bearing. Diverging contact angles offer more misalignment.

Converging	Diverging
Back to back O (FAG)	Face to face X (FAG)

The contact angles differ from one to the other slightly and this should not create a problem when replacing bearings. Where possible, try to select the same contact angle as was removed from the machine.

Series

All manufacturers make a light and a medium series, and some a heavy series.