




⚙️ Keep your motors running smoother, longer — the grease of choice for pros who demand excellence!
Mobil Polyrex EM is a premium lithium complex motor grease, expertly formulated for electric motors and industrial machinery. With a broad operating temperature range from -20°F to 350°F and a proven four-ball wear rating of 0.41mm, it delivers exceptional protection and smooth performance. Trusted and recommended by Baldor for their superior motor series, this 13.7 oz blue cartridge grease offers stable, clean application and is safe for plastic components, making it the go-to lubricant for professional-grade motor maintenance.
| ASIN | B017WKDTSA |
| Best Sellers Rank | #18,625 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #101 in Industrial Lubricants |
| Brand | Mobil |
| Customer Reviews | 4.7 4.7 out of 5 stars (295) |
| Date First Available | February 18, 2016 |
| Flash Point | 399 Degrees Fahrenheit |
| Global Trade Identification Number | 00012000004056 |
| Is Discontinued By Manufacturer | No |
| Item Form | Grease |
| Item Weight | 15.2 ounces |
| Item model number | 121122 |
| Liquid Volume | 7 Fluid Ounces |
| Manufacturer | MOBIL |
| Manufacturer Part Number | 121122 |
| Material | grease |
| Model | Mobil Polyrex EM, Motor Grease, 13.7 oz. |
| Number of Items | 1 |
| Package Information | Cartridge |
| Product Dimensions | 9.3 x 2.2 x 2.2 inches |
| Recommended Uses For Product | Mechanical,Manufacturing |
| UPC | 012000004056 |
| Unit Count | 13.7 Ounce |
| Upper Temperature Rating | 350 Degrees Fahrenheit |
K**K
RECOMMENDED BY BALDOR
Mobil Polyrex EM is the recommended lubricant for Baldor's high end "Superior" series motors. I acquired one of these motors, used, for use in a 24" pro wood lathe that I am currently designing. However, it was a used motor and the bearings sounded a bit rough when the motor shaft was spun. This is not a major problem for me. As a mechanical Engineer with a well equipped shop, I have no problem replacing the bearings. But, I wanted to re-lube the bearings to see if that would help them run smoother. After checking with Baldor, I ordered a small cartridge of Mobil Polyrex EM (great price from Amazon). When I received the Mobil Polyrex EM grease and checked it out, I was amazed at it's cohesion and lubricating properties. I re-lubricated the bearings using the Zerk fittings on the motor. When I spun up the motor for just a minute or two the bearings were silent and smooth as silk with no "bearing drag". This is, with out a doubt one of the best greases that I have ever used. I will be using Mobil Polyrex EM for all motors in my shop from now on. Mobil Polyrex EM has my highest recommendation.
T**.
Great grease, very smooth and slippery
I was excited when I received this at my doorstep. I have been looking locally for any place that sold a grease that contained polyurea for use with my starter motor that I was in the process of rebuilding. I was unable to find anything that sounded suitable for use on the starter. My particular starter had areas with plastic that needed lubrication in addition to the bearings/bushings, so I need to ensure the plastic wouldn't be corroded overtime. Happy to report the starter spins freely and quietly following dismantling, cleaning, and reassembly with new brushes and this grease. I would highly recommend this grease to anyone who needs grease for a motor. Little to no smell, pretty dark blue color, and very easy application. I did not load this into a grease gun, and so far the grease seems very stable within the container (I have had other greases separate and leak out when sitting). This is the second type of 'Mobil' branded grease I've purchased. I definitely recommend this, or their synthetic grease for other applications.
G**E
Quality procuct
Great quality motor lube.
B**.
Good grease at a good price!
Works extremely well and 13oz is going to last me a long time. Got it for 9 dollars which is a good deal for me given how long this tube is probably going to last. I did notice an odor once applied but that's to be expected. Recommended by Hismith for their machines.
B**D
Great grease
Great grease, only issue I was concerned about was tube not sealing on the grease gun, the end was dented. But it’s working.
J**N
Great hi-temp grease
I used this to pack my lawn mower spindle bearings, and so far so good.
S**N
The best grease I have found for ball bearing lubrication.
I had been using chassis grease, several different brands over time, to lubricate ball bearings in my industrial motors via zerk fittings on the units. The chassis grease, even expensive synthetic greases, would make for noisy bearings in a day or two. A friend had given me a tube of this Mobil grease. I tried it and it worked great. Greasing the bearings now lasts for weeks instead of days. I bought more from Amazon to keep on hand. Very pleased with this grease.
T**J
Electric motor grease
Electric motor grease. Works as it should
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