What is calcium based grease?

The lubricating grease with calcium soap as the main component is calcium-based lubricating grease, and its main preparation raw materials are as follows:

Calcium-based grease includes 2 types, namely, anhydrous calcium-based grease and calcium hydrate-based grease (also known as hydrated calcium-based grease). Unless otherwise specified, it mainly refers to calcium hydrate-based grease.

1) Anhydrous calcium-based grease: a type of grease made by reacting lauryl hydroxystearic acid (or other fatty acids) with calcium hydroxide to thicken base oil. The dropping point ranges from 130 to 150°C and the maximum operating temperature 120°C. Anhydrous calcium-based grease has good anti-rust performance and good oxidation stability. When using a suitable base oil, it can be made into a good low-temperature grease.

2) Calcium hydrate-based grease: a type of grease formed by reacting stearic acid, palm oil, oleic acid, or even other animal and vegetable oils (or a mixture of animal and vegetable oils) as saponified materials with calcium hydroxide. In order to obtain a better consistency, it is generally necessary to add water or low-molecular alcohols, such as methanol, ethanol, propanol, etc., during the preparation process to promote the calcium soap to form a thickening structure. The dropping point of calcium hydrate-based grease is generally 90~100°C, and the operating temperature is below 80°C. Calcium hydrate-based grease has good water resistance and rust resistance, but is limited by the operating temperature.