This International Standard specifies the requirements of greases used for the lubrication of equipment, components of machines, vehicles, etc. The purpose of this standard is for the guidance of suppliers and end users of greases and for the direction of equipment manufacturers of grease lubricated equipment. This International Standard is written in a general form so that its application can accommodate various climatic conditions throughout the world. It also stipulates the requirements of the lubricating grease in the time of the delivery. The classification of Family X (Greases) which belongs to class L (Lubricants, industrial oils and related products) is defined in ISO 6743-9. This International Standard should read in conjunction with ISO 6743-9. In this classification, a grease cannot have more than one symbol. This symbol should correspond to the most severe conditions of temperature, water contamination and load in which the grease can be used. NOTE 1 – Greases having the same classification according to ISO 6743-9 and the same specification according this International Standard are not necessarily compatible each other. Blending of non-compatible greases can lead to equipment failures. Before changing from one grease to another in an equipment, grease suppliers should be consulted. NOTE 2 – For the purposes of this International Standard, the term “% (m/m)” is used to represent the mass fraction.