2. What are bio – lubricants?
• Bio-lubricants are made from a variety of vegetable oils,
such as rapeseed, canola, sunflower, soybean, palm and
coconut oils.
• Bio-lubricants also known as bio-based lubricants or bio-
lubes.
3.
4. Applications
• The best application for bio-lubricants is in machinery
that loses oil directly into the environment during use,
total loss lubricants, and in machinery used in any
sensitive areas, such as in or near water.
• It includes two-stroke engines, chainsaw bars and chains,
railroad flanges, cables, dust suppressants and marine
lubricants.
5. Advantages
• It produces a cleaner, less toxic work environment and
fewer skin problems for these working with engines and
hydraulic systems.
• They are highly biodegradable.
6. Advantages
• Offers better safety due to higher flashpoints, constant
viscosity and less oil mist and vapour emissions.
• Produces fewer emissions due to higher boiling
temperature ranges of esters.
7. Disadvantages
• Some bad odours if contaminants are present.
• High viscosity at low temperatures.
• Poor oxidative stability at high temperatures, although
additives designed specifically for plant-based lubricants
eliminate stability issues related to extreme high and low
temperatures.
8. Comparison with conventional lubricants
• Bio lubricants are enviro-friendly whereas conventional
lubricants are not.
• Bio lubricants have a longer lifespan compared to the
conventional lubricants and hence they need not be
replaced frequently.
9. Comparison with conventional lubricants
• Most of bio-lubricants are very costly as compared to
the conventional lubricants.
• Bio-lubricants are highly biodegradable as compared to
the conventional lubricants
10. Engine oil SAW 20W-40
• Engine oils use a rating systems
developed by SAW, which is the
society of automotive engineers,
to classify oil by viscosity.
• The 40 in a 20w-40 means that
the oil must fall within certain
viscosity limits at 100 C.
