The present invention provides a composite
calcium sulfonate-based octaurea lubricating
grease, and a preparation method thereof. According to the lubricating
grease, the lubricating
grease comprises the following components by adopting the weight of the lubricating grease as the reference, wherein the components comprise, by weight, 1) 10-70% of non-Newtonian
calcium sulfonate, 2) 1-10% of higher
fatty acid calcium, 3) 1-15% of small-molecule inorganic calcium or organic calcium, 4) 0.5-30% of octaurea, and 5) 10-80% of lubricating
base oil. According to the present invention, the lubricating grease adopts the calcium
petroleum sulfonate or the synthetic calcium sulfonate as the
raw material, and contains the composite calcium thickener and the octaurea compound; the lubricating grease has properties of excellent extreme pressure antiwear property, ultralong lubricating life, excellent adhesion,
water resistance, colloidal stability, high drop point,
thermal stability,
corrosion resistance, salt mist resistance and the like.