Constant oil level levelers or oilers are designed to automatically compensate for oil evaporation and leaks under operating conditions due to oil losses. This helps maintain the correct oil level within a bearing housing, gearbox, crankcase or similar oil bath application. Levelers optimize machine performance and increase its useful life. Additionally, they increase the possibility of performing an accurate visual inspection of the oil level.
The oil leveler consists of two communicating oil tanks. The lower reservoir is in direct contact with the application and therefore its oil level is the same as that of the lubricating oil within the application. Through a ventilation tube, the lower tank is also in direct contact with the ambient air.
The upper tank is a hermetic container that stores the replacement oil, the leveler itself. Through its extended neck, which is immersed in the oil of the lower tank, the two tanks are in direct contact with each other. However, oil can only flow from the upper reservoir to the lower reservoir once the oil level in the lower reservoir is below the preset level, allowing air to flow through the extended neck into the upper reservoir.
There are different oil storage volumes to cover all needs. They are also made of various materials, as far as the glass is concerned, such as glass or plastic. The inlet fitting is usually a 1/8” or ¼” BSP or NPT thread and the body can be made of aluminum or stainless steel.
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