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Information Connection: Grease Compatibility |
See all articles | See other lubrication article
Grease. Did you know you can't mix just any grease with any other grease? It's true--doing so can cause catastrophic damage to equipment. And it's true even if the grease types are the same. Why is this? Grease consists of two parts--the actual lubricant (normally oil) and a carrier, or base. Each has its own function. It's the carriers that are not compatible. Always know the base of the grease you are adding and the base of the grease you are adding to. Once you know those things, you can use the chart below to determine if you can add one grease to the other. The grease compatibility chart below this video will help you put the right greases together. |
B
= Borderline |
Al |
Ba |
Ca |
Ca |
Ca |
Ca |
C |
Li |
Li |
Li |
P |
P |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
1. Aluminum Complex |
X |
I |
I |
C |
I |
B | I |
I |
I |
C |
I |
C |
2. Barium Complex |
I |
X |
I |
C |
I |
C |
I |
I |
I |
I |
I |
B |
3. Calcium Stearate |
I |
I |
X |
C |
I |
C | C |
C |
B |
C |
I |
C |
4. Calcium 12 Hydroxy |
C |
C |
C |
X |
B |
B | C |
C |
C |
C |
I |
C |
5. Calcium Complex |
I |
I |
I |
B |
X |
I | I |
I |
I |
C |
C |
C |
6. Calcium Sulfonate | B | C | C | B | I |
X |
I | B | B | C | I | C |
7. Clay Non-soap |
I |
I |
C |
C |
I |
I | X |
I |
I |
I |
I |
B |
8. Lithium Stearate |
I |
I |
C |
C |
I |
B | I |
X |
C |
C |
I |
C |
9. Lithium 12 Hydroxy |
I |
I |
B |
C |
I |
B | I |
C |
X |
C |
I |
C |
10. Lithium Complex |
C |
I |
C |
C |
C |
C | I |
C |
C |
X |
I |
C |
11. Polyurea Conventional |
I |
I |
I |
I |
C |
I | I |
I |
I |
I |
X |
C |
12. Polyurea Shear Stable | C | B | C | C | C | C | B | C | C | C | C | X |
People who read this article are also often involved in motor maintenance. See this course:
Greasing Industrial EquipmentLubrication is a huge issue for industrial maintenance. It's a critical function, yet it's often assigned to the most junior people as if it's a mindless job. A case could be made that, for purposes of applying the same grease over and over it is. But we can see this way of (not) thinking is ineffective, just by tallying up the sheer number of machinery failures (and thus production revenue lost) due to lubrication errors. Some common errors:
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