Was looking at Boca Bearing web site, wanted to find bearing replacement for my engine. However I find that some of the front & rear bearing exclosure are 2 shields. I thought the front bearing should be 1 shield and the rear should be open exclosure? Can anyone help on this? Thanks!
some types of bearings will come from the factory with 2 shields. Remember, these bearings are manufactured with certain specifications, and are made for a variety of mechanical devices requiring bearings to be shielded/sealed from the elements. In an application such as a model car engine, simply remove the inner seals with a sharp pick so it will have sufficient lubrication.
I dont think boca bearing manufactures their own bearings. They are just a supplier, who probably buys bearings from the big bearing manufacturers. SKF, NMB, NSK, etc.