Showing posts with label bearings. Show all posts
Showing posts with label bearings. Show all posts

Wednesday, October 3, 2018

The Care And Installation Of Bearings

So as mentioned in the previous post here are a couple of nice articles on the care and installation of bearings. There is no getting around it, if you build, rebuild, or repair, most machines or equipment, you will have to deal with bearings. The importance bearings play can not be understated, so no bearing information is too much information.

The first article is from the August 1979 "Power Transmission Design" magazine. Don't forget to click twice to expand for best reading experience.

This article on common errors in bearing maintenance was in the March 1976 "Modern Power And Engineering" magazine.

Stay tuned more to come from some of these magazines.

Saturday, May 5, 2018

Can I Use That Bearing?

So here are a couple of articles I assembled from a few sources around the web on bearing nomenclature. The numbers and codes on a bearing can be confusing to the uninformed but a little basic information will go a long way to making you comfortable with those numbers.

Bearing numbers are standard and interchangeable across manufacturers. Prefix and suffix codes describe different design elements and special features of the bearing and can be at the discretion of the manufacturer. These features are usually described in the bearing description.

So here is another take on prefix and suffix codes.

My old Delta planer bearing and the new one I used for a replacement. 

So above are the old and new bearings I used in my planer rebuild in a previous post. The standardized numbers match up, these relate to bore, series, and type. The suffix codes do not, that is because the old bearing had a standard type seal. The new NTN "FORMULA" bearing is designed for snow machines and has a specialty double lip seal, designed for the extreme conditions and temperatures encountered by modern snow machines. I had 6 in stock so this was the way to go. As far as I am concerned the double lip seal is an improvement over the old bearing. I changed them because they were running dry and you can see the fine wood dust worked into the seal contact joints.