Alot say the grease it takes is on the nameplate but I don’t specifically see any sort of labels that are on the grease tube compared to labeling on the nameplate.
They are actually starting to,well not a warning but the type is starting to be stamped on np now. I do believe most if not all motor manufacturers are using mobile poly em. And they have been for many years. Just stock that grease for motors and you'll be good to go. I buy it in cases and that's all I use for motors
There are grease compatibility charts all over the internet. Electric motor bearings use polyurea grease. Polyurea grease is not compatible with most other greases such as lithium grease. Both the Mobil polyrex and Chevron SRI are polyurea greases. Mixing them should not be a problem. The problem is mixing other greases such as general purpose greases with polyurea. Again a grease compatibility chart will show this. You also mention bearings running hot. Something everyone needs to understand in this trade is that motor bearings only need a small amount of grease to function properly. Too much grease will cause a bearing to run hotter because as the balls rotate in the bearing they will constantly be pushing against the excess grease causing resistance and heat. Over greasing electric motor bearing is far more detrimental than under greasing. Also as soon as you pump grease into a bearing its going to mix with what ever grease is already in there. There isn't enough space for greases to remain separate once the bearing is moving. Not an issue if you are using compatible grease types.
I agree 100% but I stick with mobile poly em because that's what comes in your motor from factory in most cases. That's all I'll use. But as for over greasing I'd like to add one thing, too much builds up pressure and that pressure can only go one place in most cases, spewing onto your motor windings after the bearing seal blows. Now your talking complete replacement rather than just bearings
I think the issue is mostly mixing the lithium based greases with the polyurea based greases. Do you know if the chevron was a lithium or polyurea based greases?
Polyrex is polyurea base and another common used lubricant for bearings is mobil xhp 222. Where polyrex is for electric motors and xhp 222 is for everything else.
It's not as simple as 2 pumps but quarterly for motors than run a typical business schedule is normal. How many pumps is relative to the size of your motor/bearings.
What about “super tacky” versus EM I had a maintenance guy last week tell me he added it to the pump/motor on the Loop that had only had EM in the Bearings 8 Condenser 8 Evaporator I went to B&G class that it was strictly forbidden You are correct about EM shortage Urea shortage was the other issue
If I found the same grease, that "super tacky" is a lithium grease. Lithium and Polyurea greases are definitely not compatible. SRI and Polyrex EM are at least both Polyurea greases. I would probably plan to do bearings in those motors soon.
I feel like motor manufactures should stamp a warning on their nameplates if it TRULY is an issue to mix them.
Alot say the grease it takes is on the nameplate but I don’t specifically see any sort of labels that are on the grease tube compared to labeling on the nameplate.
They are actually starting to,well not a warning but the type is starting to be stamped on np now. I do believe most if not all motor manufacturers are using mobile poly em. And they have been for many years. Just stock that grease for motors and you'll be good to go. I buy it in cases and that's all I use for motors
There are grease compatibility charts all over the internet. Electric motor bearings use polyurea grease. Polyurea grease is not compatible with most other greases such as lithium grease. Both the Mobil polyrex and Chevron SRI are polyurea greases. Mixing them should not be a problem. The problem is mixing other greases such as general purpose greases with polyurea. Again a grease compatibility chart will show this. You also mention bearings running hot. Something everyone needs to understand in this trade is that motor bearings only need a small amount of grease to function properly. Too much grease will cause a bearing to run hotter because as the balls rotate in the bearing they will constantly be pushing against the excess grease causing resistance and heat. Over greasing electric motor bearing is far more detrimental than under greasing. Also as soon as you pump grease into a bearing its going to mix with what ever grease is already in there. There isn't enough space for greases to remain separate once the bearing is moving. Not an issue if you are using compatible grease types.
I agree 100% but I stick with mobile poly em because that's what comes in your motor from factory in most cases. That's all I'll use. But as for over greasing I'd like to add one thing, too much builds up pressure and that pressure can only go one place in most cases, spewing onto your motor windings after the bearing seal blows. Now your talking complete replacement rather than just bearings
I think the issue is mostly mixing the lithium based greases with the polyurea based greases. Do you know if the chevron was a lithium or polyurea based greases?
Polyrex is polyurea base and another common used lubricant for bearings is mobil xhp 222. Where polyrex is for electric motors and xhp 222 is for everything else.
To my memory it was based on mobil poly and Chevron lithium
I've got to find this study again!
How often should you grease bearings? I’ve heard once a year is all it needs but have also heard two pumps quarterly PM.
It's based on hours, most motors are 3k to 5k run hours and typically once a quarter aligns with that.
@ So 2 pump quarterly is fine?
It's not as simple as 2 pumps but quarterly for motors than run a typical business schedule is normal. How many pumps is relative to the size of your motor/bearings.
Don’t mix them if they specifically labeled what type of grease it takes.
What about “super tacky” versus EM
I had a maintenance guy last week tell me he added it to the pump/motor on the Loop that had only had EM in the Bearings
8 Condenser
8 Evaporator
I went to B&G class that it was strictly forbidden
You are correct about EM shortage
Urea shortage was the other issue
If I found the same grease, that "super tacky" is a lithium grease. Lithium and Polyurea greases are definitely not compatible. SRI and Polyrex EM are at least both Polyurea greases. I would probably plan to do bearings in those motors soon.
You sir are an agent of chaos
The PM dept does this every time
poe vs mo all over again 😂 Makes me wonder why poe was chosen over pag oil
#bluegrease it states the grease to use right on the motor
Eh mec un peu d'action tu parles beaucoup des vidéos de ton travail mieux que du blablabla
Merci