lubricators

Lubricators are devices or systems that apply lubricant to moving parts to reduce friction, wear and heat. They help maintain bearing life and machine performance by delivering grease or oil at controlled intervals or in response to demand.

Manual lubricators include hand-operated grease guns. Automatic lubricators provide timed or demand-based delivery and are used for single-point or multi-point lubrication. Centralized lubrication systems use a pump and reservoir to feed many points from one source; progressive and return-line systems are common in heavy equipment.

How they work: a reservoir holds lubricant, a metering device sets the amount released, and lines deliver it to bearings, gears, chains, or sliding surfaces. Some systems use pulses or timers; check valves prevent backflow and contamination.

Lubricants used include grease and oils of varying viscosity. Selection depends on load, speed, temperature, environment, and seal compatibility. Grease is typical for dusty or enclosed points; oil suits high-speed or open systems.

Applications cover manufacturing, automotive, mining, agriculture, and aviation. Benefits include reduced friction and wear, lower energy use, longer service intervals, and improved reliability.

Maintenance involves monitoring levels and contamination, inspecting lines for leaks, replacing worn fittings, and using the correct lubricant grade. Over-lubrication attracts dirt and may cause leaks; under-lubrication increases wear. Safety and environmental considerations require correct handling and disposal of lubricants.