Description of Grease
Grease produced by RAHA Oil Co. are delivered to worldwide different industries.
This product with temperature ranges from -30 C° to 1100 C° is used for lubrication of gearbox, chain and towing wire, vehicle ball-joint, hot forge molding, air filter, open gear, thread connect, bearing, industrial valve, metal melting furnace, rotating kiln, industrial electromotor couplings etc.
It is a thick, semi-solid lubricant used to reduce friction between moving parts in machinery. It’s typically made from a combination of:
Base oil: Can be mineral oil (petroleum-derived), synthetic oil, or even vegetable oil for food-grade applications.
Thickener: Gives grease its semi-solid consistency. Common thickeners include soap (like lithium or calcium soap), clay, or polymers.
Additives: Enhance specific properties of the grease, like extreme pressure resistance, corrosion protection, or water washout resistance.
Application of Turkey and UAE Grease
Reducing Friction and Wear: It minimizes friction between moving parts in machinery, extending their lifespan and preventing breakdowns. This is crucial in applications like bearings, gears, and conveyor belts.
Harsh Environments: Unlike oil, grease stays put and offers superior protection in harsh environments. It can withstand high temperatures, heavy loads, shock impacts, and moisture, making it ideal for construction machinery, mining equipment, and marine components.
Sealing and Protection: Grease acts as a barrier, sealing bearings and other components from dust, dirt, and water ingress. This prevents contamination and promotes smooth operation.
Less Frequent Lubrication: Compared to oil, grease needs less frequent application. This is especially beneficial for hard-to-reach components or those operating infrequently.
Some specific examples of UAE grease applications include
- Automotive: Lubricating chassis parts, wheel bearings, and suspension components.
- Industrial: Gearboxes, motors, bearings in manufacturing plants, power generation, and steel mills.
- Construction: Bulldozers, excavators, cranes, and other heavy equipment.
- Agriculture: Tractors, harvesters, and other farm machinery.
- Food Processing: Specialized food-grade greases are used to lubricate machinery while maintaining hygiene standards.
The Difference Between Grease & Oil
Grease and oil are both common lubricants used in bearings. The main difference between these two is that grease consists of an oil and a thickener.
The thickener acts like a sponge that retains the oil. Grease can also contain various additives such as rust inhibitors, EP (extreme pressure) additives, oxidation preventatives, etc.
Typically, greases will have a semi-solid to solid consistency. This consistency allows grease to stay in place longer than oil. For many applications, the ability to stay in place and slowly release oil gives grease an advantage over oil alone.
Different Types of Grease
There are many different types of greases, each formulated with specific properties to excel in various applications. Here’s a breakdown of some common grease types:
Lithium
A popular multipurpose grease known for its durability, high water resistance, and excellent performance across a wide temperature range. It’s commonly used in automotive applications like chassis parts, wheel bearings, and suspension components.
Calcium
One of the first greases developed, offering good water resistance and corrosion protection. However, it has a lower temperature tolerance compared to lithium. Due to its affordability, it’s still widely used in agricultural and industrial applications where high temperatures aren’t a major concern.
Aluminum Complex
Offers superior high-temperature resistance and water washout resistance. It’s a good choice for heavy-duty applications like construction machinery and industrial equipment operating under demanding conditions.
Barium Complex
Known for its exceptional extreme pressure (EP) properties, making it ideal for applications with high shock loads and heavy bearing pressures. It’s commonly used in mining equipment, gearboxes, and other heavy machinery.
Clay (Bentonite)
Stands out for its high temperature resistance and excellent thickening properties. It doesn’t melt or soften easily, making it suitable for applications like ovens, furnaces, and slow-speed bearings.
Synthetic
Made with synthetic base oils, offering superior performance in extreme temperatures, high shear environments, and extended service life. They are often more expensive than conventional greases but can be a better choice for critical applications.
Choosing the Right Grease
Grease selection is done by considering the following points:
Temperature range of lubrication point.
Maximum relative speeds of the surfaces.
Maximum pressure exerted.
Frequency of vibration and shock.
Presence of water.
Material of the lubricated surface.
Type, size and mechanical design of the part.
Variations of ambient conditions.
Temperature, load pressure and relative speeds of the surfaces are normally the most important parameters to select proper it.
Specification of Different Types of Grease
Aluminum
Typical Properties | Unit | Test Method | Typical Value | |
---|---|---|---|---|
Grade | --- | NLGI | 0 | 00 |
Thickener | --- | --- | Aluminum Complex | |
Cone Penetration @ 25°C | 0.1 mm | ASTM D-217 | 355-385 | 400-430 |
Dropping Point | °C | ASTM D-2265 | 200 | 200 |
Color | --- | Visual | Black | |
Temperature Range | °C | --- | -10 to +140 | |
DIN Classification | --- | DIN 51502 | OGPF0N-10 | OGPF00N-10 |
Calcium
Typical Properties | Unit | Test Method | Typical Value | |
---|---|---|---|---|
Grade | --- | NLGI | 2 | 3 |
Thickener | --- | --- | Calcium complex | |
Cone Penetration @ 25°C | 0.1 mm | ASTM D-217 | 265-295 | 220-250 |
Dropping Point | °C | ASTM D-2265 | 250 | 250 |
Color | --- | Visual | brown | |
Temperature Range | °C | --- | -20 to +140 | |
DIN Classification | --- | DIN 51502 | K2N-20 | K3N-20 |
Lithium
Typical Properties | Unit | Test Method | Typical Value | ||
---|---|---|---|---|---|
Grade | --- | NLGI | 1 | 2 | 3 |
Thickener | --- | --- | Lithium | ||
Cone Penetration @ 25°C | 0.1 mm | ASTM D-217 | 310-340 | 265-295 | 220-250 |
Dropping Point | °C | ASTM D-2265 | 180 | 180 | 180 |
color | --- | Visual | Cream | ||
Temperature Range | °C | --- | -20 to +120 | ||
DIN Classification | --- | DIN 51502 | K1K-20 | K2K-20 | K3K-20 |