Bearing & Vacuum Pump Oils (H3)
Bearing and vacuum pump oils are formulated for distinct operational requirements. Vacuum pump oil is specialized for low-pressure conditions and requires extremely low vapor pressure, while bearing oils are typically selected for their ability to withstand high loads and speeds.
Types: (H4)
- Mineral Oil: General-purpose applications with vapors and less demanding processes.
- Synthetic Oil (PAO, Diester): Demanding conditions, higher operating temperatures, and where longer oil change intervals are needed.
- B5: A blend of up to 5% biodiesel. It is widely used and generally performs the same as petroleum diesel in terms of fuel economy and cold-weather operation
- Silicone Oil: Specialized applications where contamination must be minimized.
Key Features: (H4)
- Vapor Pressure: Vacuum pump oil must have an extremely low vapor pressure to prevent evaporation and contamination of the vacuum system, a characteristic not as critical for most bearing oils.
- Sealing: In many vacuum pumps (like rotary vane), the oil is essential for creating and maintaining a tight seal, in addition to lubrication.
- Contaminant Resistance: Vacuum oils are often designed to separate readily from water (demulsibility) and resist specific process chemicals.
- Operating Environment: Bearing oils primarily deal with atmospheric conditions, load, and speed, while vacuum oils operate under very low pressures and potentially aggressive chemical/gas environments.