What greases are compatible with Mobil polyrex em greases?
Mobil Polyrex EM greases have been shown to be compatible with a number of ExxonMobil lithium complex greases, as well as competitive electric motor mineral polyurea products, as determined by the methodology of ASTM D6185. For specific questions about grease compatibility, contact your Mobil representative.
What is the equivalent oil of Mobil polyrex em?
The Shell equivalent to what 90% of motors use (Mobil Polyrex EM) would be Shell Gadus S2 T100 2, but you will run into serious problems with warranty issues. Same problem comes up with certain compressor manufacturers that standardize on Mobil Rarus oils to the point where switching manufacturers runs afoul of warranty issues.
Which grease for polyurea thickener?
Polyrex EM is sheer stabilized Polyurea thickener. Google “grease compatibility chart” and you will find a bunch of charts that rate compatibility (based on change in worked penetration) of greases according to their thickener. Sheer stabilized Polyurea is compatible with just about all thickeners (much more so than the non-sheet stabilized).
What kind of Grease do you use for motor bearings?
Product Data Sheets (PDS) View all 2 grades of Mobil Polyrex™ EM Super-premium Mobil Polyrex™ EM Series greases are specially formulated for electric-motor bearings. The advanced thickener formulation and proprietary manufacturing techniques provide improved bearing performance and protection for long electric motor life.
What grease is compatible with Polyrex em?
ExxonMobil lithium complex greasesMobil Polyrex EM greases have been shown to be compatible with a number of ExxonMobil lithium complex greases, as well as competitive electric motor mineral polyurea products, as determined by the methodology of ASTM D6185. For specific questions about grease compatibility, contact your Mobil representative.
What is Polyrex EM grease?
Electric Motor Bearing Grease Super-premium Mobil Polyrex™ EM Series greases are specially formulated for electric-motor bearings. The advanced thickener formulation and proprietary manufacturing techniques provide improved bearing performance and protection for long electric motor life.
What Color Is Mobil Polyrex EM grease?
MOBIL Electric Motor Bearing Grease: Blue, Polyurea, 13.7 oz, Cartridge, NLGI Grade 2 – 5XB54|124050 – Grainger.
Where can I buy Mobil Polyrex EM grease?
Mobil 1® Polyrex EM Grease for Bearings, 14 oz – Walmart.com.
Is Mobil Polyrex em synthetic?
“Mobil SHC Polyrex 102 EM, our newest synthetic grease, gives operators an easy way to save energy and deliver the highest level of equipment protection.”
Are lithium and polyurea grease compatibility?
Greases based on simple lithium soaps (lithium stearate or lithium 12-hydroxy stearate) and lithium complex soaps may or may not be compatible with polyurea greases. The reason being, some polyurea thickeners are completely compatible with lithium and lithium complex thickeners, while others are incompatible.
Is Mobil Polyrex em shear stable?
Mobil Polyrex™ 461 EP is a shear-stable polyurea grease with excellent extreme-pressure (EP) and load-carrying characteristics. The proprietary polyurea thickener system exhibits excellent resistance to oxidation and oil separation at operating temperatures as high as 160°C (320°F).
What is the best grease for electric motors?
The preferred thickener for most electric motors is polyurea. However, aluminum complex, lithium complex or calcium sulfonate thickeners are also good options.
What color is polyurea grease?
Green colorHUSKEY MP-2 Polyurea Grease gives longer bearing life under high speed, high temperature and high water applications than most other widely used antifriction bearing greases. The distinctive Green color makes it easy to identify during and after lubrication.
How do you grease a Baldor electric motor?
Apply grease gun to fitting (or grease hole). Too much grease or injecting grease to quickly can cause premature bearing failure. Slowly apply the recommended amount of grease, taking 1 minute or so to apply. Operate motor for 20 minutes, then reinstall purge plug if previously removed.
Is Mobil Polyrex em shear stable?
Mobil Polyrex™ 461 EP is a shear-stable polyurea grease with excellent extreme-pressure (EP) and load-carrying characteristics. The proprietary polyurea thickener system exhibits excellent resistance to oxidation and oil separation at operating temperatures as high as 160°C (320°F).
What is the best grease for electric motors?
The preferred thickener for most electric motors is polyurea. However, aluminum complex, lithium complex or calcium sulfonate thickeners are also good options.
What does NLGI stand for?
National Lubricating Grease InstituteTraditionally, a grease’s stiffness is indicated by its penetration value and is evaluated using the standardized National Lubricating Grease Institute (NLGI) grade chart. The NLGI number is a measure of the grease’s consistency as indicated by its worked penetration value.
What is the operating temperature range for Exxon Polyrex EM grease?
By sharp contrast, the limiting temperature for continuous operation arrived at through DIN 51821 (FE9) bearing tests would be given as 275°F (135°C) for Mobilgrease XHP 222, 300°F (150°C) for Mobilith SHC 220, and 340°F (170°C) for Mobil Polyrex EM (Figure C).
What grease is used for electric motors?
Mobil Polyrex EM greases are recommended by many major bearing and electric motor manufacturers for long-life lubrication of electric motor ball and roller bearings.
Is Mobil Polyrex compatible with ExxonMobil?
Mobil Polyrex EM greases have been shown to be compatible with a number of ExxonMobil lithium complex greases, as well as competitive electric motor mineral polyurea products, as determined by the methodology of ASTM D6185. For specific questions about grease compatibility, contact your Mobil representative.
What is polyurea grease used for?
polyurea greases are often used in applications where very long grease life (up to fill for life) is required. another consideration is the amount of noise generated by the bearings – with some polyurea greses the noise emissions are far less then with others. based on these arguments the grease was most likely carefully chosen. although other greases may well be compatible, mixing may lead to various unwanted effects that only come to light after very long use. you are better of to stick to the grease advised in this case and only consider a changeover when changing the motorbearings – and then choose a suitable grease together with your lubesupplier, the bearing manufacturer and the motor manufacturer.
Is polyurea grease compatible with all thickeners?
Sheer stabilized Polyurea is compatible with just about all thickeners (much more so than the non-sheet stabilized).
Does Polyrex EM come in all rebuilds?
I helped switch a customer because all the new motors were coming in with Polyrex EM, and the motor rebuild shop we use puts Polyrex EM in all the rebuilds.
Can you use SCH100 grease on fan pillow blocks?
We recommended using it. However, SCH100 was our standard grease for the fan pillow blocks. This became especially critical on double row sphericals. Lightly loaded bearings like double row sphericals on a fan are vulnerable to seizure type failure if the grease is stiff or tacky.
Do electric motors come with polyurea grease?
Bottom line is this,most electric motors come new with polyurea. EM grade bearings are almost always prelubricated with polyurea. For those two reasons alone it makes sense to use polyurea grease in most of your electric motor applications.
