High temperature lubricating oils and greases: FAQs
What is the difference between the usage temperatures of petroleum lubricating oil and high temperature lubricating oil?
Petroleum lubricating oils can be used at temperatures of 150°C or less, but high temperature lubricating oils can be used at temperatures between 210°C and 260°C.
What should I be careful about when handling the LE series of MORESCO-HILUBE high temperature lubricating oils?
Solid lubricants are mixed into the LE series of MORESCO-HILUBE oils. Blockages may occur in the oil supply piping and other sections if you do not adhere to the conditions shown below, so caution should be exercised.
(1) Do not mix water into the lubricating oil. Do not use the lubricating oil in locations that come into contact with water or steam.
(2) Install the oil supply pipe in an environment that is subject to a temperature of 150°C or less.
(3) Inspect the oil supply pipe during periodic repairs.
What are the main components of MORESCO-HILUBE high temperature lubricating oils?
The L, LM, LE, and MO series oils are mainly composed of alkyl-substituted diphenyl ether.
The LS-E series oils are mainly composed of esters.
What are the guidelines for the heat resistance of high temperature lubricating oils under harsh conditions?
Use the thin film oven test to examine the length of time until the oils lose their fluidity (thin film service life), the amount of residue, and the maximum temperature (heat-resistant temperature) at which the oils lose their fluidity.
Oils that possess a combination of these attributes, such as a long thin film service life and a small amount of residue, can be said to have favorable heat resistance.
What is a simple way to select oil types from among the MORESCO-HILUBE high temperature lubricating oils?
(1) For normal applications, consider using the L series.
(2) If you require excellent lubricating properties in particular, consider using the LE series or the MO series.
(3) If you require long thin film service life in particular, consider using the LS-E series.
(4) Select a product that has the optimum viscosity grade for your situation based on your oil supply method, the capacity of your oil supply equipment, and your usage conditions.
