Gear oil compositions, methods of making and using thereof

Details Gear oil compositions, methods of making and using thereof Gear oil compositions, methods of making and using thereof

C - Chemistry, Metallurgy

10

M

C10M 107/02 (2006.01)

Patent

CA 2700695

A gear oil composition is provided. The composition comprises a synergistic blend of mineral oil base stock and polyalphaolefin (PAO) base stock for the oil composition to have a traction coefficient at a slide to roll ratio of 40 percent at 15 mm2/s. of 0.030 or less and a pressure viscosity coefficient of at least 16.0 at 80 °C, 20 Newton load, and 1.1 m/s rolling speed. In one embodiment, the synergistic amount of PAO base stock ranges from 5 to 48 wt. % based on the total weight of the gear oil composition.

L'invention porte sur une composition d'huile pour engrenages. La composition comprend un mélange synergique d'une huile de base du type huile minérale et d'une huile de base du type polyalphaoléfine (PAO) pour que la composition d'huile ait un coefficient de traction, pour un rapport de glissement à roulement de 40 pour cent à 15 mm2/s de 0,030 ou moins, et un coefficient de viscosité sous pression d'au moins 16,0 à 80°C sous une charge de 20 Newton et une vitesse de roulement de 1,1 m/s. Dans un mode de réalisation, la quantité synergique de l'huile de base du type PAO est comprise entre 5 et 48 % en poids par rapport au poids total de la composition d'huile pour engrenages.

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