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NTN Cojinetes Complejos FAQS

QWhat is a sealed ball bearing?

AThe sealed ball bearing is one which is completely sealed with lubricant inside. It prevents the flow of other lubricants into the rolling element area and also prevents the lubricant inside i.e. grease from getting out of the rolling element area.

QWhat to use to clean off the packing grease?

AThe trick is to let the mineral spirits sit for a few minutes before wiping it off with a soft rag or towel. A little time consuming and a little elbow grease but should come off fairly easily.

QWhat is a sealed roller bearing?

AA sealed deep groove ball bearing. A rolling-element bearing, also known as a rolling bearing, is a bearing which carries a load by placing rolling elements (such as balls or rollers) between two bearing rings called races.

QHow can you tell if a bearing is a sealed bearing?

AWhen trying to decide whether a bearing is sealed using the AFBMA or SKF code, note the shields or seals section. If the bearing number uses the AFBMA code, look for "EE" (or "2RSI" for SKF) to determine if the bearing is sealed on both sides. This is the only way to identify whether a bearing is sealed.

QDo 'sealed' bearings still need grease?

AYES, they need to be greased with BEARING GREASE unless you bought the bearing and hub pre-assembled from Timken and spent hundreds of dollars. You DID NOT buy a hub and bearing for $100 so if you think you did you didn't....you will only be receiving the bearing.