Seal Bearing or Not?

If Mum, Dad, sister or brother will not answer the question and no-one else from the wider familiy knows, and in school it is still too early for it and while it never occured to you to ask the manufacturer I still recommend to check with someone from http://www.baldor.com/

Have fun!

at least try to consult manuals. A blown assembly drawing should be there in the maintenance manual

Hey, Tornado

You are right the are (6313 at D.E and 6312 at opp or vice versa) and it also mention the type of grease Polyrex EM, but the alemite port at the drive end is plug with a slotted plug which is impossible to removed, I have to say that the motor has been manufacturer in 2012. Obviously I will check on the web tomorrow. I do not have the number with me now.

Thank you for your answer.

Seals are often indicated by letter suffixes. If the motor came with unsealed bearings, it would have grease zerks, hence also the listing of grease type. But later, if someone had only a sealed replacement bearing on hand, they could use it and plug the port; or vice versa.

Sealed bearings have ZZ marked after their no. Like 6313ZZ which means it is sealed. If ZZ mark is not there then it is not sealed bearing.

ZZ is a bearing sealed on both sides.

Some bearings are only sealed on one side if I remember correctly and will therefore have only one "Z".

Some have plastic seals and some have metal seals....That is also encoded in the number.....

The OP needs to get the data from a bearing manufacturer. Something like this might help him further:-

Ball and Roller Bearings from NTN

A sealed bearing and a shielded bearing are not the same,and have a different suffix.

A sealed bearing has a rubber contact seal,whereas a shielded bearing has a metal

shield that does not actually contact the inner race shoulder.

Sealed have more rotational friction, and are normally used in relatively lower rpm

applications.

Baldour does. Pick up the bloody phone, and talk to them!

Was that why your question was so impermeable?

I suggest! Bye!

Thanks lot IdeaSmith this will be very useful for me.

I will use the tip, really appreciate. I am sure you would understand, been polyglot sometime it is not as easy as other might think...

Already knew all the answers and looking for a simple answer that you can understand? Makes me wonder if you can comprehend what any of us are talking about.

I've literally seen with my own Four Eyes, a (Brand Name Removed) motor with sealed bearings and grease zerks...... Go figure.

Go away alien!

There are quite a few different types of ball bearings:

Sealed,shielded,and shielded and sealed are just a few.

Of these,there are one-side shielded,or sealed,or both sides .

A shielded bearing has metal faces,and is designed to keep debris out,but not to keep grease in.Typically used in small electric motors.

A sealed bearing is designed to keep grease in.

A sealed and shielded bearing does both,such as in a gear box output shaft with oil on one side of the bearing,atmosphere on the other.

Rubber sealed bearing normally have a PP suffix,or NPP (If Neoprene seal material),if both sides are sealed,or simply P if only one side is sealed.

Shielded bearings usually have a Z or ZZ suffix.

There are also suffixes for clearance,noise,etc.

These suffixes appear to be the same across all manufacturers.

I suggest you get a bearing catalog and learn the differences.

You probably have a lot of questions with basic answers. And that's why no one around you want to answer with "certitude".

Work around a bit instead of throwing questions.

'There is life beyond the screen'