Bearing anti-rust oil and preparation method thereof

The invention discloses bearing anti-rust oil and a preparation method thereof. The preparation method includes the following steps of firstly, taking heavy calcium carbonate powder to be ground through a grinding machine; secondly, increasing the temperature in a stirring tank to be 90-120 DEG C, and adding 140-170 parts of mineral oil, 3-7 parts of petroleum sodium sulfonate, 2-4 parts of phytic acid, 3-6 parts of nonylphenol polyoxyethylene ether, 2-5 parts of calcium lignosulphonate and 1-5 parts of hydroxyl-terminated polybutadiene into the stirring tank to be stirred for 30-50 min; thirdly, adding 4-8 parts of starch sodium octenylsuccinate, 0.5-1 part of fluorocarbon resin, 1-4 parts of acetyl castor butyl alcohol acid, 1-3 parts of perfluorinated octyl ethyl acrylate and 1-3 parts of heavy calcium carbonate powder into the stirring tank to be stirred for 20-40 min, and cooling to prepare the bearing anti-rust oil. The prepared bearing anti-rust oil can effectively prevent bearings from rusting.