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NLGI Grease Classification System |
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| NLGI Grade |
Worked Penetration (ASTM D 217) At 77°F |
Consistency | ||
| 000 | 445-475 |
Semi
fluid (able to pour) |
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| 00 | 400-430 |
Semi
fluid (able to pour with help) |
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| 0 | 355-385 | Almost Semi fluid | ||
| 1 | 310-340 |
Soft
Grease (consistency comparable to white grease) |
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| 2 | 265-295 |
Most
Common Grease (consistency comparable wheel bearing Grease) |
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| 3 | 220-250 | Stiff | ||
| 4 | 175-205 | Very Stiff | ||
| 5 | 130-115 |
Hard Grease (workable) |
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| 6 | 85-115 |
Solid (not workable) |
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This is a basic with some testers not agreeing the best we can do is to
use this as a guide. 1,2 & 3 is the most common grade of grease used today. 000, 00, 0 would be usable in a leaking gear box with bad seals they will still leak after warming just not as fast as gear lube |
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