The most common types are simple lithium soaps lithium complex and polyurea.
Machine grease types.
3 c p load ratio where c basic dynamic load rating kn and p equivalent dynamic bearing load kn.
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.
Numerous types of grease thickeners are currently in use each with its own pros and cons.
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.
Some customers think grease selection can be complicated and confusing but it doesn t have to be.
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.
A more complex structure can be formed by using a complexing salt.
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.
With so many options understanding your needs is important when selecting grease.
Grease is a lubricant it is much thicker than oil and is used in other areas of your machine or vehicle.
Let me try to demystify grease a bit.
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.
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.
White lithium grease marine grease silicone grease.
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.
While greases can behave similarly to lubricating oils when they are used as a lubricant they are not actually the same thing.
Lubricants including greases prevent metal to metal contact.
Simple lithium soaps are often used in low cost general purpose greases and perform relatively well in most performance categories at moderate temperatures.
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.
Base oil thickener and additives.
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.
