Housings are damaged typically from damage due to bearing seizure or they are worn oval due to cyclic loading.

Belzona® 1111 (Super Metal) has been used for over 60 years to rebuild these worn areas in lieu of welding.

The damaged housing should be thoroughly cleaned using Belzona 9111 (Cleaner/Degreaser) in order to remove dirt, grease and any other surface contaminants.  Application to remove impregnated oil or grease should be carried out by warming the surface and washing with Belzona 9111. 

You can rebuild bearing housings using forming techniques or machining techniques and the processes differ a little.  Either way, you have to remove 1/16^th  of an inch (1.6 mm) either by using grinding equipment or machining a rough thread profile into the surface.

Then you apply the Belzona® 1111 (Super Metal) and force it down into the prepared surface in order to wet out the surface thoroughly and avoid air entrapment.  Apply further Belzona material to give a machining allowance of 1/8 of an inch (3.2 mm) and allow it to cure in accordance with the Belzona Instructions for Use.  Then machine. 

If you are using the forming technique apply a thin layer of the material to the prepared area of the housing.  Avoid applying any excess material which could be pushed out of the back of the housing into the mechanical parts of the equipment.  Apply a thin layer of material to the external faces of the bearing/former to form a wedge shape towards the leading edge.  Position the bearing in the housing and centralize accordingly.  Oh, use Belzona 9411 (Release Agent) anywhere you don’t want the Belzona to adhere.

Here’s a video link  showing you step by step instructions.

Let us know how we can help repair, protect and improve your component equipment.

Stephanie Rumford
srumford@rumfordgroup.com
937-435-4650
RumfordGroup.com