What are the types of anti-wear hydraulic oils? What are their characteristics?

2019-12-04View Original

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(1) High-zinc type (referred to as “conventional zinc type” abroad): Zinc content in the oil ≥ 0.07%. This type is the main type of HM oil both domestically and internationally, and it offers the best wear resistance for steel-on-steel friction pairs, such as high and medium pressure vane pumps. High-zinc types are further divided into alkaline high-zinc and neutral high-zinc. Neutral high-zinc exhibits better extreme pressure and wear resistance, while alkaline high-zinc, due to its higher pH value and stronger alkalinity, has better oxidation resistance and thermal stability. (2) Low-zinc type (referred to as “stable zinc type” abroad): Zinc content in the oil

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What are the types of anti-wear hydraulic oils? What are their characteristics?

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