What type of lubrication is used for line shaft bearings?

Line shaft bearings typically utilize lubrication from their own sumps containing a specific type of oil, such as 2190. This oil is designed to provide adequate lubrication and cooling for the bearings, ensuring smooth operation and longevity. The use of oil from its own reservoir allows for continuous lubrication, which is crucial for maintaining the performance of the bearings under high operational loads and speeds. Sump lubrication helps prevent contamination and ensures that the oil remains at optimal levels for effective performance.

Other lubrication methods, such as using grease from a centralized system or oil from an external source, are not commonly employed for line shaft bearings. Grease may not provide the same level of cooling and fluidity required for high-speed applications, while external oil sources can complicate the lubrication process and introduce contamination risks. Water-based lubricants are typically not suitable for bearings due to their lower viscosity and potential for corrosion or other forms of damage to mechanical components.