What is a heavy weight gear oil?
Heavier weight, or higher grade oil is more viscous and therefore thicker as it flows between the gears. Light grade oil is ideal for small, fast, polished gears under a light load. Heavy grade oil is suited for large, slow, rough gears under a heavy load.
Which is heavier gear oil or water?
Gear Oil API Gravity If the API gravity is greater than 10, then the oil is lighter than water and will float on top of it; if the API gravity is less than 10, then the oil is heavier than water and will sink. The API for a gear oil is determined according to ASTM D287.
What is 600 weight gear oil?
The lubricant used in the early days of motoring up into the thirties was a very heavy clinging type of lubricant known as 600 W Oil. In viscosity it is very much like today’s S. A. E. 250 Gear Oil but is easier on soft metals.
What gear oil numbers mean?
Gear oil meant for high ambient temperatures is designated by a single number (for instance, SAE 80 or SAE 250). Viscosity of these oils is measured at 212 degrees Fahrenheit; higher numbers indicate more viscous oil.
What kind of oil goes in a gearbox?
For example, most modern gearboxes require a GL-4 oil, and separate differentials (where fitted) require a GL-5 oil. While they take the same form, the viscosity grades for gear oils are on a different scale than the viscosity grades for an engine oil. The viscometrics for gear oils are standardized in SAE J306.
What oil should be used in a Model A Ford?
Therefore, we recommend the use of a modern 10W-40 multi-viscosity motor oil.
Can we use engine oil as gear oil?
Home / Technical infos / F.A.Q / Can I use engine oil for the gearbox? No, the majority of gearboxes require a special formulated lubricant for the transmission system. whose crankcase is common between the engine and the transmissions. Like engine oil, the gear oil must comply with the manufacturer’s requirements.
What happens if you don’t put oil on your gearbox?
Also, the presence of even a very small amount of solvent-type flushing compound will reduce the viscosity of a gear oil. Further, without a coating of oil for even a short time, “flash rusting” of internal parts of the gearbox can take place.
What kind of lubricant should I use on my gearbox?
Further, without a coating of oil for even a short time, “flash rusting” of internal parts of the gearbox can take place. Third, to properly flush the gearbox, use one of the new gear lubricants, or a light viscosity of R&O compressor/turbine oil, filling to one-third the recommended operating oil level.
What should be included in service life of gear oils?
Any statement regarding the service life of gear oils should include information regarding operating, environmental, and mechanical conditions of the equipment. Even in the best of situations, gear and circulating oils will not last indefinitely.
Why do you need to wash out the gearbox?
This helps remove contaminants and oxidized oil that can impair the performance of the new gear lubricants. If contaminated oil remains in the gearbox, foaming can occur. Second, do not use a volatile, chlorinated solvent or solvent-type flushing compound to wash out the gearbox.