| 摘要 |
<p>The invention relates to a monograde and multigrade mineral oil composition meant for gear transmissions of transportation means. According to the invention, the oil comprises 56...88% mineral paraffin oil, up to 25% synthetic oil of the polyalphaolefin type, 1.5...12% pack-type additive having wearproof, extreme pressure, oxidation preventing, corrosion preventing, rustproof, antifoaming and dispersing functions containing 0.42...2.35% phosphorus, 4.65...34% sulphur, 0.22...1.25% nitrogen, not more than 4.85% boron, not more than 0.05% zinc, not more than 4.3% magnesium, not more than 6.02% potassium and not more than 0.5% depressant or not more than 7% viscosity index enhancer, the percentage being expressed by weight.</p> |
