Composite calcium sulfonate-based lubricating grease for industrial robot and preparation method of composite calcium sulfonate-based lubricating grease

The invention discloses composite calcium sulfonate-based lubricating grease special for an industrial robot and a preparation method thereof, and belongs to the technical field of lubricating grease. The lubricating grease consists of the following components in parts by weight: 55-70 parts of base oil; 25 to 40 parts of an inorganic thickening agent; 1-5 parts of a transforming agent; 1-5 parts of calcium hydroxide; 1-5 parts of composite acid; 2-6 parts of a tackifier, 1-5 parts of a friction reducing agent, 1-5 parts of an anti-wear reagent at extreme pressure, 0.5-2 parts of an anti-rust agent and 0.5-2 parts of an antioxidant; and carrying out phase inversion, refining, blending and other processes to prepare the bearing lubricating grease with high dropping point and long service life. According to the invention, the production cost is reduced, and the processing technology is simplified; the preparation process is green, and the use of volatile substances is reduced; the application temperature range