Machine Grease Types

Different types of greases are typically formulated with three grease components.

Machine grease types.

3 c p load ratio where c basic dynamic load rating kn and p equivalent dynamic bearing load kn. 1 rotational speed rotational speed r min x 0 5 d d mm. The third portion is the fluid which can be selected from mineral oils various types of synthetics polyglycols or a never ending combination of fluids. Heavy duty grease red n tacky grease marine grease use when.

2 for ball bearings spherical roller bearings tapered roller bearings and carb bearings rotational speed up to 210 000 and for cylindrical roller bearings rotational speed up to 270 000. Paul grives global services grease marketing manager exxonmobil fuels lubricants. White lithium grease marine grease silicone grease. Let me try to demystify grease a bit.

Experts at nsk americas which develops bearings and linear motion systems explain that in every case there had been a recent switch from one type of grease that met the machine manufacturer s specifications for optimal performance to another type that also met the appropriate specs. Machines that have spindles or rotating grooves can get very hot and a polyurea grease won t break down as quickly as other types of grease. Simple lithium soaps are often used in low cost general purpose greases and perform relatively well in most performance categories at moderate temperatures. A more complex structure can be formed by using a complexing salt.

Higher end greases synthetic grease this type of grease is more expensive it s almost three times the cost of a basic grease but it lasts longer than a petroleum based grease. And in each case the operators had been victims of. You need lubrication to stay put and stick to surfaces for a long time you want to seal out contaminants such as water or dust you use a machine so infrequently that you may forget to oil it. Numerous types of grease thickeners are currently in use each with its own pros and cons.

This converts the thickener to a soap salt complex hence the term complex grease. Oil is normally used internally so it can flow through the different tubes and passages and works as part of a system or cycle that allows it to circulate as it lubricates. With so many options understanding your needs is important when selecting grease. As with any type of lubricant the goal when using a grease is to reduce friction by creating a film that separates the moving surfaces.

While greases can behave similarly to lubricating oils when they are used as a lubricant they are not actually the same thing. The most commonly used types of grease in the automotive world is multi purpose the main use for this stuff is chassis components where heat is not an issue this type of grease is typically made from calcium sulfonate. The most common types are simple lithium soaps lithium complex and polyurea. Lubricants including greases prevent metal to metal contact.