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Unloading valve (hydraulics)
| Глоссарий терминов смазочных материалов |
A device that directs hydraulic fluid back to the reservoir at low pressure when there is no demand on the system.
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Unworked pen/penetration, английский
(astm d-217) the penetration at 77°f of a sample of grease that has experienced minimum handling in transfer to the test apparatus and that has not been subjected to the action of a grease worker.
Under a fixed load and for a specific interval, английский
The greater the penetration, the softer the grease. using this method, nlgi grades the softest grease (deepest penetration) as 000, the hardest as 6.
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