Greases

People generally associate lubricants with oils but in fact there are a great many applications where non-liquid lubricants are used, with the most obvious of these being greases.

According to the ASTM (American Society for Testing and Materials), lubricating grease is a solid or semi-fluid substance containing a thickener agent and a lubricating liquid. Other ingredients such as additives and solid lubricants can also be added to give it specific properties.

This definition establishes the fundamental concept that grease is not a very viscose oil but rather a thickened oil, a multi-phase system made up of two distinct components represented by a thickener agent and fluid oil. Therefore, the consistency of the product can be varied by varying the amount of thickener, something which is codified by an NLGI number (National Lubricating Grease Institute – USA).

The properties of grease are therefore linked to the nature and type of thickener and lubricant it contains.
Thickeners can be soap (calcium, lithium, sodium and such like), complex soap (calcium, lithium, lithium-calcium, aluminium and so forth), bentone or polyurea based, while the oils dissolved inside the thickener can be mineral, semi-synthetic or synthetic based.

As far as production is concerned, greases are much more complex than oils. Manufacturing greases is not simply a case of mixing the individual components together, but requires a rather complex production process involving chemical reactions produced by the different components.

Greases are used for lubricating and protecting mechanical machinery as an alternative to liquid lubricants, particularly when a lack of space or problems connected with dripping make it difficult to use oil.

Grease is sometimes applied continuously (in the iron and steel industry), while other times it is used to lubricate a component for its working life (rolling bearings or small reducers).
Choosing the correct product is highly complex and is best taken with the help of expert technical advice, since there are many factors that can influence the way products function and effect machinery lubricated with grease.

Eni is one of the main producers of greases and has a wide range of products that can satisfy the needs of both the industrial and automotive sectors.

Additional information about the products listed above and the technical assistance we offer can be obtained from the Eni Refining&Marketing commercial structure nearest to you.

 


 

  • Automotive lubricants

    Eni has always been involved in the research and production of high performance lubricants for all types of engines; from the first synthetic oils more than thirty years ago to the current high quality products.

  • Transmission Oils

    In any vehicle application the transmissions play a key role to censure the availability and the usability of the power generated by the engine.
    Recently, transmission oils have undergone deep changes intended to guarantee the operation of the transmissions in more and more difficult conditions in terms of temperature and load on the gears.

  • Special Products

    Not only motor oils and transmission lubricants. In the automotive sector there are many other products for "accessory" applications but fundamental for the proper operation of every vehicle.
    Antifreezes, brake fluids, chassis greases and many other special fluids are included in this products typology.

  • Industrial lubricants

    Industrial lubricants are used in a large variety of equipments and applications.
    This deals with all types of products destined for the lubrication of industrial machines, such as hydraulic systhems, turbines, compressors, bearings, open and closed gears, machine tool slideway, pneumatic tools and industrial transmissions.

  • Metalworking Products

    Metalworking fluids is a macro-category in which there is a multitude of products for an enormous variety of uses related to the production processes of mechanical components of all types and sizes.
    Also in terms of composition, this is a widely varying macro-category in which mineral and synthetic oils are used, as well as all kinds of chemical products.

  • Greases

    People generally associate lubricants with oils but in fact there are a great many applications where non-liquid lubricants are used, with the most obvious of these being greases.
    According to the ASTM (American Society for Testing and Materials), lubricating grease is a solid or semi-fluid substance containing a thickener agent and a lubricating liquid. Other ingredients such as additives and solid lubricants can also be added to give it specific properties.

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