This document establishes the specifications relative to family X (greases) for lubricants, industrial oils and related products of Class L (see ISO 6743‑9). Those greases are mainly used for the lubrication of anti-friction bearings fitted on machines, vehicles, etc.

This document is written in a general form so that its application can accommodate various climatic conditions throughout the world. It also stipulates the requirements for the lubricating grease at the time of the delivery.