Grease, Grease and more Grease

[nuclear rabbit]

Hello everyone,

I'm trying to get an idea of what you all are using in the field for fan bearing grease.
Primarily, for belt driven fan-roof top units.

Also, are you using a different type of grease for electric motors (again, for belt driven units)?

Thank you

N.R.

[pecmsg]

The worse thing you can do is start Mixing Grease and over greasing. Better to just leave it alone!

[R600a]

mobile polyrex EM is the gold standard in electric motor bearing grease and is also good for pillow blocks and other blower bearings. It happens to be the standard factory grease for almost every electric motor manufacturer.
As a polyurea Grease it is not supposed to be mixed with lithium complex greases.

Sent from the Okie state usin Tapatalk

[CHILLERSVCMAN]

POLYUREA is the only grease for motors on VFDs . DO NOT MIX GREASE.

[71CHOPS]

There is a whole world of knowledge associated with grease and bearing lubrication. Its a rabbit hole that is never ending.

In its most simple form, grease is oil suspended in a delivery medium. The very basics are not to mix greases with different base materials. Mixing of base materials can cause the lubricant (oil) to drop out of suspension.

Each motor and bearing manufacturer will have specific lubrication guide lines. To know for sure, its best to follow their recommendations.

The biggest problem (other than mixing) is knowing how much grease to apply to each application.

Large motor manufacturers will specifiy exactly how many cubic inches, and how often (depending on application) to grease the motor.

Pillow block Bearing manufacturers may say to apply until grease starts seaping from the lip seals.

If you really want to get serious about lubrication, research the data on the bearings and motors installed in each piece of equipment, then follow each manufacturer's guidelines.

Also, calibrate your grease gun....build a 1" cube out of cardboard, then count the number of pumps it takes to fill it 100%. That way you have an idea of how much you're delivering.

[R600a]

There is a whole world of knowledge associated with grease and bearing lubrication. Its a rabbit hole that is never ending.

In its most simple form, grease is oil suspended in a delivery medium. The very basics are not to mix greases with different base materials. Mixing of base materials can cause the lubricant (oil) to drop out of suspension.

Each motor and bearing manufacturer will have specific lubrication guide lines. To know for sure, its best to follow their recommendations.

The biggest problem (other than mixing) is knowing how much grease to apply to each application.

Large motor manufacturers will specifiy exactly how many cubic inches, and how often (depending on application) to grease the motor.

Pillow block Bearing manufacturers may say to apply until grease starts seaping from the lip seals.

If you really want to get serious about lubrication, research the data on the bearings and motors installed in each piece of equipment, then follow each manufacturer's guidelines.

Also, calibrate your grease gun....build a 1" cube out of cardboard, then count the number of pumps it takes to fill it 100%. That way you have an idea of how much you're delivering.

I have spent months reading about grease every spare minute i had and i barely scratched the surface. Tribology is an amazing science.

Sent from the Okie state usin Tapatalk

[gbfromsd]

OP was talking about fan bearings. Most any Lithium based grease will do fine. I have yet to change out a fan bearing that was greased regularly with any kind of grease. I've change out plenty that had no grease at all. Some fan bearings require greases that will stand up to moisture - tower fan bearings for example. Some bearings require greases that will stand up to high centrifugal forces without separation - pump couplings etc. As noted above, the mfr's service specifications should be consulted for these special considerations.